{"id":3630,"date":"2026-08-26T07:30:39","date_gmt":"2026-08-26T07:30:39","guid":{"rendered":"https:\/\/bakth-battery.com\/?p=3630"},"modified":"2026-08-27T09:43:17","modified_gmt":"2026-08-27T09:43:17","slug":"battery-state-of-health-soh-definition-testing-and-practical-guide","status":"publish","type":"post","link":"https:\/\/bakth-battery.com\/de\/battery-state-of-health-soh-definition-testing-and-practical-guide\/","title":{"rendered":"Battery State of Health (SOH): Definition, Testing and Practical Guide"},"content":{"rendered":"<div class=\"wp-block-stackable-image stk-block-image stk-block stk-51ec223\" data-block-id=\"51ec223\"><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img fetchpriority=\"high\" decoding=\"async\" class=\"stk-img wp-image-3632\" src=\"https:\/\/bakth-battery.com\/wp-content\/uploads\/2026\/08\/DSC099941.webp\" width=\"1200\" height=\"800\" alt=\"Li\u2011Po Battery Overheating: Warning Signs, Causes &amp; Emergency Safety Steps\" srcset=\"https:\/\/bakth-battery.com\/wp-content\/uploads\/2026\/08\/DSC099941.webp 1200w, https:\/\/bakth-battery.com\/wp-content\/uploads\/2026\/08\/DSC099941-300x200.webp 300w, https:\/\/bakth-battery.com\/wp-content\/uploads\/2026\/08\/DSC099941-1024x683.webp 1024w, https:\/\/bakth-battery.com\/wp-content\/uploads\/2026\/08\/DSC099941-768x512.webp 768w, https:\/\/bakth-battery.com\/wp-content\/uploads\/2026\/08\/DSC099941-18x12.webp 18w, https:\/\/bakth-battery.com\/wp-content\/uploads\/2026\/08\/DSC099941-600x400.webp 600w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/span><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-e2ad2f4\" data-block-id=\"e2ad2f4\"><p class=\"stk-block-text__text\">When your battery shows a full\u2011charge reading yet runs out of power far sooner than expected, hidden capacity loss is usually to blame. This common frustration ties directly to&nbsp;<strong>battery State of Health (SOH)<\/strong>. While most users track charge percentage (SOC), understanding SOH unlocks accurate runtime predictions, early degradation detection and smarter battery\u2011replacement decisions. This guide breaks down battery health, how you measure it, and why it matters for lithium\u2011ion, lead\u2011acid, RV, marine, off\u2011grid and EV battery systems.<\/p><\/div>\n\n\n\n<nav class=\"wp-block-stackable-table-of-contents stk-block-table-of-contents stk-block stk-15b91ca stk-block-background\" data-block-id=\"15b91ca\"><style>.stk-15b91ca ul{list-style-type:none !important;}html{scroll-behavior:smooth !important;}.stk-15b91ca {background-color:var(--theme-palette-color-6, #f2f5f7) !important;border-top-left-radius:var(--stk--preset--border-radius--small, 4px) !important;border-top-right-radius:var(--stk--preset--border-radius--small, 4px) !important;border-bottom-right-radius:var(--stk--preset--border-radius--small, 4px) !important;border-bottom-left-radius:var(--stk--preset--border-radius--small, 4px) !important;overflow:hidden !important;margin-bottom:0px !important;}.stk-15b91ca:before{background-color:var(--theme-palette-color-6, #f2f5f7) !important;}<\/style><p class=\"stk-table-of-contents__title\"><strong>Table of Contents<\/strong><\/p><ul class=\"stk-table-of-contents__table\"><li><a href=\"#1-what-exactly-is-battery-state-of-health-soh\">1. What Exactly Is Battery State of Health (SOH)?<\/a><\/li><li><a href=\"#2-soh-vs-soc-the-critical-difference-most-users-miss\">2. SOH vs SOC: The Critical Difference Most Users Miss<\/a><\/li><li><a href=\"#3-why-soh-changes-how-you-read-soc-readings\">3. Why SOH Changes How You Read SOC Readings<\/a><\/li><li><a href=\"#4-key-reasons-to-track-your-batterys-soh\">4. Key Reasons To Track Your Battery\u2019s SOH<\/a><\/li><li><a href=\"#5-root-causes-behind-declining-battery-health\">5. Root Causes Behind Declining Battery Health<\/a><\/li><li><a href=\"#6-three-main-approaches-to-calculate-soh\">6. Three Main Approaches to Calculate SOH<\/a><\/li><li><a href=\"#7-step-by-step-how-to-test-lithium-ion-battery-soh-yourself\">7. Step\u2011by\u2011Step: How to Test Lithium\u2011ion Battery SOH Yourself<\/a><\/li><li><a href=\"#8-how-to-measure-lead-acid-battery-state-of-health\">8. How to Measure Lead\u2011Acid Battery State of Health<\/a><\/li><li><a href=\"#9-interpreting-your-soh-percentage-reading\">9. Interpreting Your SOH Percentage Reading<\/a><\/li><li><a href=\"#10-updating-your-battery-monitor-after-capacity-loss\">10. Updating Your Battery Monitor After Capacity Loss<\/a><\/li><li><a href=\"#11-when-should-you-perform-an-soh-health-check\">11. When Should You Perform an SOH Health Check?<\/a><\/li><li><a href=\"#12-final-thoughts\">12. Final Thoughts<\/a><\/li><li><a href=\"#heading-placeholder\">13. Frequently Asked Questions<\/a><\/li><\/ul><\/nav>\n\n\n\n<div class=\"wp-block-stackable-divider stk-block-divider stk-block stk-fae445a\" data-block-id=\"fae445a\"><style>.stk-fae445a hr.stk-block-divider__hr{width:100% !important;}.stk-fae445a {padding-top:var(--stk--preset--spacing--30, 0.67rem) !important;padding-right:var(--stk--preset--spacing--none, 0px) !important;padding-bottom:var(--stk--preset--spacing--20, 0.44rem) !important;padding-left:var(--stk--preset--spacing--none, 0px) !important;margin-bottom:0px !important;}<\/style><hr class=\"stk-block-divider__hr\"\/><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-b41b303\" data-block-id=\"b41b303\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-b41b303-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-978a924\" data-v=\"4\" data-block-id=\"978a924\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-978a924-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-978a924-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-6a6249f\" id=\"1-what-exactly-is-battery-state-of-health-soh\" data-block-id=\"6a6249f\"><style>.stk-6a6249f {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">1. What Exactly Is Battery State of Health (SOH)?<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-cb9bab8\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"cb9bab8\"><style>.stk-cb9bab8 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">State of Health (SOH) measures a battery\u2019s present\u2011day performance against its factory\u2011new baseline, displayed as a percentage value. A brand\u2011new battery typically starts at ~100\u202f% SOH. As internal chemical wear accumulates over months and years, this percentage slowly falls.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-76dd4ed\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"76dd4ed\"><style>.stk-76dd4ed {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Unlike voltage, amps or temperature readings, SOH cannot be read directly by a multimeter. Technicians and battery monitors calculate or estimate health by comparing real\u2011world battery behaviour to its original specifications.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-692119d\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"692119d\"><style>.stk-692119d {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">There is no single universal definition for SOH across all industries. Depending on your equipment, SOH can refer to one or more of these key benchmarks:<\/p><\/div>\n\n\n\n<ul style=\"margin-top:0px;margin-bottom:0px\" class=\"wp-block-list\">\n<li>Remaining usable energy\u2011storage capacity (critical for solar backup, RV and deep\u2011cycle batteries)<\/li>\n\n\n\n<li>Peak current\u2011delivery capability (essential for car starting batteries and electric vehicles)<\/li>\n\n\n\n<li>Rising internal resistance (a warning sign for fast\u2011charging systems)<\/li>\n\n\n\n<li>Voltage stability under heavy working loads<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-e3468c3\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"e3468c3\"><style>.stk-e3468c3 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text has-text-align-left\">The most widely\u2011used, capacity\u2011focused SOH formula:<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-70f13df\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"70f13df\"><style>.stk-70f13df {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">     <strong>SOH = (Measured Current Capacity \u00f7 Original Baseline Capacity) \u00d7 100<\/strong><\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-a340d47\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"a340d47\"><style>.stk-a340d47 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Example: A 100\u202fAh deep\u2011cycle battery that delivers 86\u202fAh in a controlled discharge test has an SOH of 86\u202f%.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-0984466\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"0984466\"><style>.stk-0984466 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\"><em>Note: Testing conditions including ambient temperature, discharge speed and cut\u2011off voltage will change your final result. Whenever possible, compare results to a capacity test completed on your battery on its first day of use, rather than only using the printed nameplate rating.<\/em><\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-237a6be\" data-block-id=\"237a6be\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-237a6be-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-2735636\" data-v=\"4\" data-block-id=\"2735636\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-2735636-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-2735636-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-ade3e1f\" id=\"2-soh-vs-soc-the-critical-difference-most-users-miss\" data-block-id=\"ade3e1f\"><style>.stk-ade3e1f {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">2. SOH vs SOC: The Critical Difference Most Users Miss<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-f968375\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"f968375\"><style>.stk-f968375 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">These two battery metrics are frequently mixed\u2011up, yet they answer completely separate questions about your battery pack.<\/p><\/div>\n\n\n\n<ul style=\"margin-top:0px;margin-bottom:0px\" class=\"wp-block-list\">\n<li><strong>State of Charge (SOC): How full is the battery right now?<\/strong><br>SOC is your real\u2011time fuel gauge, constantly shifting as you charge and discharge. An aged battery can easily hit 100\u202f% SOC even with severely reduced total storage capacity.<\/li>\n\n\n\n<li><strong>State of Health (SOH): How much original performance has your battery retained over time?<\/strong><br>SOH tracks long\u2011term, permanent battery degradation, changing slowly across hundreds or thousands of charge cycles.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-5cbbe37\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"5cbbe37\"><style>.stk-5cbbe37 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text has-text-align-left\">The classic smartphone example explains this perfectly: your old phone displays 100\u202f% battery after charging, yet dies halfway through the day. Its SOC reads full, but its SOH has dropped significantly. This same issue causes unexpected early shutdowns for off\u2011grid battery banks and electric vehicles.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-94cded7\" data-block-id=\"94cded7\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-94cded7-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-5b1eece\" data-v=\"4\" data-block-id=\"5b1eece\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-5b1eece-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-5b1eece-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-6953989\" id=\"3-why-soh-changes-how-you-read-soc-readings\" data-block-id=\"6953989\"><style>.stk-6953989 {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">3. Why SOH Changes How You Read SOC Readings<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-85902c5\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"85902c5\"><style>.stk-85902c5 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Many battery monitors calculate remaining runtime based on your battery\u2019s factory\u2011stated amp\u2011hour rating. Once capacity fades, this fixed setting creates inaccurate predictions.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-1054b0f\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"1054b0f\"><style>.stk-1054b0f {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text has-text-align-left\">Take this practical case: your 100\u202fAh battery degrades to 80\u202fAh usable capacity. At a displayed 50\u202f% SOC, it only holds roughly 40\u202fAh of available energy, not the expected 50\u202fAh. If your shunt\u2011based battery monitor is still programmed for the original 100\u202fAh rating, it will consistently overestimate remaining power, and your battery may trigger low\u2011voltage protection long before your monitor hits zero percent.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-1b8d694\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"1b8d694\"><style>.stk-1b8d694 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text has-text-align-left\">Early shutdowns are not always caused by poor battery health. Cell imbalance, loose wiring, cold weather and heavy sudden loads can also create identical symptoms. Still, declining SOH should always form part of your troubleshooting checklist.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-60cd677\" data-block-id=\"60cd677\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-60cd677-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-da1f882\" data-v=\"4\" data-block-id=\"da1f882\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-da1f882-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-da1f882-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-3274263\" id=\"4-key-reasons-to-track-your-batterys-soh\" data-block-id=\"3274263\"><style>.stk-3274263 {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">4. Key Reasons To Track Your Battery\u2019s SOH<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-a436364\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"a436364\"><style>.stk-a436364 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Monitoring battery health delivers tangible, real\u2011world benefits for home backup, marine fleets, EV owners and industrial operators alike:<\/p><\/div>\n\n\n\n<ul style=\"margin-top:0px;margin-bottom:0px\" class=\"wp-block-list\">\n<li>Get realistic, reliable runtime estimates for your power system<\/li>\n\n\n\n<li>Update battery\u2011monitor capacity settings for precise SOC tracking<\/li>\n\n\n\n<li>Catch abnormal, fast\u2011accelerating degradation before unexpected power failure<\/li>\n\n\n\n<li>Schedule planned maintenance or battery replacement instead of emergency swaps<\/li>\n\n\n\n<li>Inspect the true condition when buying second\u2011hand lithium or lead\u2011acid battery packs<\/li>\n\n\n\n<li>Compare health performance between multiple batteries inside a large battery bank<\/li>\n\n\n\n<li>Improve electric\u2011vehicle range calculations<\/li>\n\n\n\n<li>Prevent costly downtime for mission\u2011critical loads such as medical gear, refrigeration and industrial equipment<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-9ed044e\" data-block-id=\"9ed044e\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-9ed044e-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-e2454ab\" data-v=\"4\" data-block-id=\"e2454ab\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-e2454ab-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-e2454ab-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-2ac8322\" id=\"5-root-causes-behind-declining-battery-health\" data-block-id=\"2ac8322\"><style>.stk-2ac8322 {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">5. Root Causes Behind Declining Battery Health<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-56c8bbc\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"56c8bbc\"><style>.stk-56c8bbc {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Every rechargeable battery slowly loses health over time. The chemical aging process differs greatly between lithium\u2011ion and traditional lead\u2011acid chemistries.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-1023735\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"1023735\"><style>.stk-1023735 {border-style:solid !important;border-color:#4299e1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:4px !important;padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:10px !important;margin-bottom:0px !important;}.stk-1023735 .stk-block-heading__text{color:#2d5f8f !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">Lithium\u2011ion &amp; LiFePO\u2084 Battery Degradation<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-d602828\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"d602828\"><style>.stk-d602828 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Inside lithium\u2011based batteries, lithium ions travel back\u2011and\u2011forth between cathode and anode plates during charge\u2011discharge cycles. This movement creates minor mechanical expansion and contraction on electrode materials, eventually creating micro\u2011cracks and loss of active material contact.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-b46c634\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"b46c634\"><style>.stk-b46c634 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Other common aging triggers:<\/p><\/div>\n\n\n\n<ul style=\"margin-top:0px;margin-bottom:0px\" class=\"wp-block-list\">\n<li>Gradual SEI layer build\u2011up on the negative anode, consuming free lithium and raising internal resistance<\/li>\n\n\n\n<li>Lithium plating when fast\u2011charging at low temperatures, raising internal short\u2011circuit risks<\/li>\n\n\n\n<li>Electrolyte breakdown, gas build\u2011up and corrosion of internal current collectors<\/li>\n\n\n\n<li>Long\u2011term exposure to extreme high or low temperatures<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-4ee273c\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"4ee273c\"><style>.stk-4ee273c {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">A well\u2011configured BMS (Battery Management System) protects cells from overcharge, deep discharge and unsafe temperatures, slowing degradation, yet cannot stop natural calendar aging completely.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-2d5757a\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"2d5757a\"><style>.stk-2d5757a {border-style:solid !important;border-color:#4299e1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:4px !important;padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:10px !important;margin-bottom:0px !important;}.stk-2d5757a .stk-block-heading__text{color:#2d5f8f !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">Lead\u2011Acid Battery Degradation<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-939991d\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"939991d\"><style>.stk-939991d {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Deep\u2011cycle flooded, AGM and gel lead\u2011acid batteries suffer from a distinct set of aging problems, most famously sulfation.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-96dce7a\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"96dce7a\"><style>.stk-96dce7a {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">When lead\u2011acid batteries sit partially discharged for long periods, lead sulfate hardens into non\u2011reversible crystals on the plates, permanently cutting usable capacity.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-f5689fe\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"f5689fe\"><style>.stk-f5689fe {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Additional lead\u2011acid failure modes:<\/p><\/div>\n\n\n\n<ul style=\"margin-top:0px;margin-bottom:0px\" class=\"wp-block-list\">\n<li>Water loss and gassing on flooded batteries<\/li>\n\n\n\n<li>Positive plate corrosion<\/li>\n\n\n\n<li>Shedding of active plate material<\/li>\n\n\n\n<li>Electrolyte stratification with uneven acid concentration inside the cell<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-27edf0e\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"27edf0e\"><style>.stk-27edf0e {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Lead\u2011acid batteries generally degrade far faster than lithium batteries when regularly left in a partially\u2011charged condition.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-b073f1d\" data-block-id=\"b073f1d\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-b073f1d-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-50c443c\" data-v=\"4\" data-block-id=\"50c443c\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-50c443c-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-50c443c-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-35c702b\" id=\"6-three-main-approaches-to-calculate-soh\" data-block-id=\"35c702b\"><style>.stk-35c702b {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">6. Three Main Approaches to Calculate SOH<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-9e91aaa\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"9e91aaa\"><style>.stk-9e91aaa {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">There is no single perfect health\u2011testing method; technicians select techniques based on your battery\u2019s primary purpose.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-1e71696\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"1e71696\"><style>.stk-1e71696 {border-style:solid !important;border-color:#4299e1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:4px !important;padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:10px !important;margin-bottom:0px !important;}.stk-1e71696 .stk-block-heading__text{color:#2d5f8f !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">1. Capacity\u2011Based SOH Testing<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-35165c5\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"35165c5\"><style>.stk-35165c5 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">This method compares the battery\u2019s real, measured discharge capacity against its baseline capacity. For deep\u2011cycle, off\u2011grid, RV and marine systems, capacity testing provides the most useful SOH result, directly linked to how long your battery will run your appliances.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-fc45006\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"fc45006\"><style>.stk-fc45006 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">The downside: controlled full discharge testing takes multiple hours and requires you to temporarily remove the battery from active service.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-eb7bd38\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"eb7bd38\"><style>.stk-eb7bd38 {border-style:solid !important;border-color:#4299e1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:4px !important;padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:10px !important;margin-bottom:0px !important;}.stk-eb7bd38 .stk-block-heading__text{color:#2d5f8f !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">2. Power &amp; Internal\u2011Resistance\u2011Based SOH<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-b9d016c\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"b9d016c\"><style>.stk-b9d016c {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">As batteries age, internal resistance rises, creating larger voltage drops under heavy\u2011load conditions. Resistance\u2011focused SOH testing evaluates how well a battery delivers high bursts of power. This measurement is ideal for starter batteries, high\u2011inverter loads and electric vehicles.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-454c62d\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"454c62d\"><style>.stk-454c62d {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">One important limitation: a battery can retain strong total storage capacity while suffering poor high\u2011current performance \u2014 and vice\u2011versa. Resistance data never tells you full runtime capacity on its own.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-8f167c7\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"8f167c7\"><style>.stk-8f167c7 {border-style:solid !important;border-color:#4299e1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:4px !important;padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:10px !important;margin-bottom:0px !important;}.stk-8f167c7 .stk-block-heading__text{color:#2d5f8f !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">3. Model\u2011Driven Composite SOH Estimation<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-8a75229\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"8a75229\"><style>.stk-8a75229 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Modern smart BMS and EV battery systems calculate estimated SOH with complex mathematical models. These algorithms draw from a large pool of sensor data, including cycle history, charge throughput, temperature logs, voltage curves and internal resistance trends, to predict degradation without running a full manual discharge test.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-b8e4d4a\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"b8e4d4a\"><style>.stk-b8e4d4a {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">This convenient estimation method is widely used for smartphones, EVs and grid\u2011tied energy\u2011storage systems. Keep in mind: these figures remain approximations and may diverge from results from a hands\u2011on capacity test.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-5544c2a\" data-block-id=\"5544c2a\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-5544c2a-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-f767a41\" data-v=\"4\" data-block-id=\"f767a41\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-f767a41-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-f767a41-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-79b2127\" id=\"7-step-by-step-how-to-test-lithium-ion-battery-soh-yourself\" data-block-id=\"79b2127\"><style>.stk-79b2127 {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">7. Step\u2011by\u2011Step: How to Test Lithium\u2011ion Battery SOH Yourself<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-b5b8d0e\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"b5b8d0e\"><style>.stk-b5b8d0e {border-style:solid !important;border-color:#4299e1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:4px !important;padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:10px !important;margin-bottom:0px !important;}.stk-b5b8d0e .stk-block-heading__text{color:#2d5f8f !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">Option 1: Run a Controlled Capacity Discharge Test (Most Accurate)<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-fee465e\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"fee465e\"><style>.stk-fee465e {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">This is the gold\u2011standard home\u2011testing workflow for deep\u2011cycle lithium\u2011iron phosphate and lithium\u2011ion battery packs:<\/p><\/div>\n\n\n\n<ol style=\"margin-top:0px;margin-bottom:0px\" class=\"wp-block-list\">\n<li>Fully charge your battery following the manufacturer\u2019s official charging specifications<\/li>\n\n\n\n<li>Complete the full cell\u2011balancing cycle once charging finishes<\/li>\n\n\n\n<li>Connect a stable, known constant\u2011current load<\/li>\n\n\n\n<li>Record total amp\u2011hours or watt\u2011hours released during discharge<\/li>\n\n\n\n<li>Stop discharging once you hit the manufacturer\u2011recommended low cut\u2011off voltage, or the BMS triggers protection shutdown<\/li>\n\n\n\n<li>Compare your measured capacity value against your original baseline capacity<\/li>\n\n\n\n<li>Calculate your final SOH percentage<\/li>\n<\/ol>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-b8be44b\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"b8be44b\"><style>.stk-b8be44b {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Always test at the same discharge rate and temperature conditions used for your battery\u2019s factory rating, to avoid skewed readings.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-1b8e607\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"1b8e607\"><style>.stk-1b8e607 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\"><em>Safety note: Large commercial, high\u2011voltage battery banks should be inspected and capacity\u2011tested only by qualified battery technicians.<\/em><\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-daf522b\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"daf522b\"><style>.stk-daf522b {border-style:solid !important;border-color:#4299e1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:4px !important;padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:10px !important;margin-bottom:0px !important;}.stk-daf522b .stk-block-heading__text{color:#2d5f8f !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">Option 2: Pull Estimated SOH Readings From Your BMS<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-8dd2840\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"8dd2840\"><style>.stk-8dd2840 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Many smart lithium\u2011ion battery packs display an SOH percentage inside their monitoring dashboard. Remember, your BMS does not directly \u201cmeasure\u201d battery health; it generates a calculated estimate. The accuracy improves when your battery regularly completes full charge\u2011discharge cycles. Many basic drop\u2011in lithium batteries include protection\u2011only BMS hardware that does not output any SOH data.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-9a637d2\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"9a637d2\"><style>.stk-9a637d2 {border-style:solid !important;border-color:#4299e1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:4px !important;padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:10px !important;margin-bottom:0px !important;}.stk-9a637d2 .stk-block-heading__text{color:#2d5f8f !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">Option 3: Watch for Real\u2011World Warning Signs of Poor SOH<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-9c0c7c3\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"9c0c7c3\"><style>.stk-9c0c7c3 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">You can spot early degradation before completing formal testing if you notice:<\/p><\/div>\n\n\n\n<ul style=\"margin-top:0px;margin-bottom:0px\" class=\"wp-block-list\">\n<li>Noticeably shorter runtime under identical load conditions<\/li>\n\n\n\n<li>Early BMS low\u2011voltage shutdowns<\/li>\n\n\n\n<li>Bigger\u2011than\u2011usual voltage sag under heavy loads<\/li>\n\n\n\n<li>Slower, abnormal charging behaviour<\/li>\n\n\n\n<li>Growing cell\u2011to\u2011cell imbalance across multi\u2011battery banks<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-3c19440\" data-block-id=\"3c19440\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-3c19440-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-5f46cad\" data-v=\"4\" data-block-id=\"5f46cad\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-5f46cad-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-5f46cad-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-db7a3d3\" id=\"8-how-to-measure-lead-acid-battery-state-of-health\" data-block-id=\"db7a3d3\"><style>.stk-db7a3d3 {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">8. How to Measure Lead\u2011Acid Battery State of Health<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-ebd6cc1\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"ebd6cc1\"><style>.stk-ebd6cc1 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Lead\u2011acid testing adds extra considerations, heavily affected by the Peukert effect: discharge speed drastically changes how much apparent capacity you can extract from the battery.<\/p><\/div>\n\n\n\n<ol style=\"margin-top:0px;margin-bottom:0px\" class=\"wp-block-list\">\n<li><strong>Deep\u2011cycle capacity discharge test<\/strong>: Fully recharge, discharge at the manufacturer\u2011specified low\u2011rate current until reaching the defined cut\u2011off voltage, then compare delivered capacity against your baseline rating.<\/li>\n\n\n\n<li><strong>Hydrometer testing (flooded lead\u2011acid only)<\/strong>: Test electrolyte specific\u2011gravity levels cell\u2011by\u2011cell. Persistently low gravity in one individual cell signals a weak, sulfated cell. This check reveals charge status but cannot calculate an exact SOH percentage.<\/li>\n\n\n\n<li><strong>Load &amp; conductance testers<\/strong>: Ideal for vehicle starter batteries. Load testers check whether the battery can deliver high cranking current without severe voltage drop, yet will not accurately predict deep\u2011cycle runtime capacity.<\/li>\n<\/ol>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-5365068\" data-block-id=\"5365068\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-5365068-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-aa54510\" data-v=\"4\" data-block-id=\"aa54510\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-aa54510-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-aa54510-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-b9b25b5\" id=\"9-interpreting-your-soh-percentage-reading\" data-block-id=\"b9b25b5\"><style>.stk-b9b25b5 {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">9. Interpreting Your SOH Percentage Reading<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-c210f89\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"c210f89\"><style>.stk-c210f89 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Always confirm what metric your SOH number was built on. An 85\u202f% capacity\u2011based SOH score does not guarantee 85\u202f% peak power delivery, and resistance\u2011based health values will not tell you remaining runtime.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-6c33b72\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"6c33b72\"><style>.stk-6c33b72 {border-style:solid !important;border-color:#4299e1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:4px !important;padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:10px !important;margin-bottom:0px !important;}.stk-6c33b72 .stk-block-heading__text{color:#2d5f8f !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">Is 100\u202f% SOH always the maximum reading?<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-f0fc8d7\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"f0fc8d7\"><style>.stk-f0fc8d7 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Brand\u2011new batteries often deliver slightly more or less capacity than their printed label rating, due to normal manufacturing tolerances. Some BMS software caps displayed health values at 100\u202f%, even if your initial capacity test measures above the nominal Ah rating.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-366aa4b\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"366aa4b\"><style>.stk-366aa4b {border-style:solid !important;border-color:#4299e1 !important;border-top-width:0px !important;border-right-width:0px !important;border-bottom-width:0px !important;border-left-width:4px !important;padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:10px !important;margin-bottom:0px !important;}.stk-366aa4b .stk-block-heading__text{color:#2d5f8f !important;}<\/style><h3 class=\"stk-block-heading__text has-text-color\">What does the famous 80\u202f% SOH threshold mean?<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-9494a17\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"9494a17\"><style>.stk-9494a17 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">80\u202f% remaining capacity is the widely\u2011cited end\u2011of\u2011life benchmark for many rechargeable batteries, but it is not an automatic failure cutoff.<\/p><\/div>\n\n\n\n<ul style=\"margin-top:0px;margin-bottom:0px\" class=\"wp-block-list\">\n<li>An 80\u202f%\u2011SOH battery can deliver reliable service for low\u2011demand backup power and off\u2011grid loads for many extra years<\/li>\n\n\n\n<li>For electric\u2011vehicle, mission\u2011critical backup systems or heavy\u2011use deep\u2011cycle setups, most operators plan battery replacement once SOH drops near 80\u202f%<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-80f49d4\" data-block-id=\"80f49d4\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-80f49d4-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-2ade190\" data-v=\"4\" data-block-id=\"2ade190\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-2ade190-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-2ade190-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-b6fe5ce\" id=\"10-updating-your-battery-monitor-after-capacity-loss\" data-block-id=\"b6fe5ce\"><style>.stk-b6fe5ce {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">10. Updating Your Battery Monitor After Capacity Loss<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-5ef8345\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"5ef8345\"><style>.stk-5ef8345 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Once a verified capacity test confirms reduced usable capacity on your battery bank, you should adjust the programmed amp\u2011hour capacity value stored in your shunt\u2011based battery monitor. Refresh related settings including charge efficiency and Peukert exponent, then fully charge and synchronise your monitor.<\/p><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-97a6306\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"97a6306\"><style>.stk-97a6306 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Never lower your programmed capacity value based on one single unexpected early shutdown. Always troubleshoot wiring, temperature, load and cell\u2011balance issues first before concluding capacity loss is the root cause.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-1923cfb\" data-block-id=\"1923cfb\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-1923cfb-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-103fe42\" data-v=\"4\" data-block-id=\"103fe42\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-103fe42-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-103fe42-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-1c0c1b0\" id=\"11-when-should-you-perform-an-soh-health-check\" data-block-id=\"1c0c1b0\"><style>.stk-1c0c1b0 {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">11. When Should You Perform an SOH Health Check?<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-afe858e\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"afe858e\"><style>.stk-afe858e {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Full capacity testing is not required every few months. Schedule formal battery\u2011health evaluation when:<\/p><\/div>\n\n\n\n<ul style=\"margin-top:0px;margin-bottom:0px\" class=\"wp-block-list\">\n<li>Your battery has operated for five years or longer<\/li>\n\n\n\n<li>You regularly run deep discharge cycles<\/li>\n\n\n\n<li>You observe obvious runtime reduction or early shutdown events<\/li>\n\n\n\n<li>You purchase pre\u2011owned lithium\u2011ion or lead\u2011acid batteries<\/li>\n\n\n\n<li>Your commercial maintenance schedule mandates periodic inspection<\/li>\n\n\n\n<li>You are preparing your battery system for a long off\u2011grid trip or critical backup deployment<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-f89586e\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"f89586e\"><style>.stk-f89586e {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">Tracking SOH trends over multiple tests delivers far more actionable insight than one\u2011off health measurements.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-49cb8a2\" data-block-id=\"49cb8a2\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-49cb8a2-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-d7985f5\" data-v=\"4\" data-block-id=\"d7985f5\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-d7985f5-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-d7985f5-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-cbb32fb\" id=\"12-final-thoughts\" data-block-id=\"cbb32fb\"><style>.stk-cbb32fb {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text\">12. Final Thoughts<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-184acd9\" id=\"1-quick-overview-of-each-battery-type\" data-block-id=\"184acd9\"><style>.stk-184acd9 {margin-bottom:0px !important;}<\/style><p class=\"stk-block-text__text\">State of Health (SOH) gives you the clearest picture of long\u2011term battery aging. While your SOC gauge shows how much charge you have right now, SOH reveals how much of your battery\u2019s original performance remains. Controlled discharge capacity testing offers the most trustworthy real\u2011world health reading for deep\u2011cycle power systems, while smart BMS estimates deliver convenient ongoing monitoring. By tracking SOH trends, you avoid unexpected power outages, optimise your battery\u2011monitor settings, and make well\u2011timed, cost\u2011effective battery\u2011replacement decisions.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns alignfull stk-block-columns stk-block stk-18aed1f\" data-block-id=\"18aed1f\"><style>.stk-18aed1f {padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;margin-top:var(--stk--preset--spacing--none, 0px) !important;}.stk-18aed1f-column{--stk-columns-spacing:0px !important;--stk-column-gap:0px !important;row-gap:0px !important;}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-18aed1f-column alignwide\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-dbbfdc8\" data-v=\"4\" data-block-id=\"dbbfdc8\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-dbbfdc8-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-dbbfdc8-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-b2eff01\" id=\"heading-placeholder\" data-block-id=\"b2eff01\"><style>.stk-b2eff01 {margin-bottom:0px !important;}<\/style><h2 class=\"stk-block-heading__text has-text-align-left\">13. Frequently Asked Questions<\/h2><\/div>\n\n\n\n<details class=\"wp-block-stackable-accordion stk-block-accordion stk-inner-blocks stk-block-content stk-block stk-656ea09 is-style-default\" data-block-id=\"656ea09\"><style>.stk-656ea09 {padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;margin-bottom:0px !important;}<\/style>\n<summary class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-4d8d4ef stk--container-small stk-block-accordion__heading\" data-v=\"4\" data-block-id=\"4d8d4ef\"><style>.stk-4d8d4ef-container{margin-top:0px !important;margin-right:0px !important;margin-bottom:0px !important;margin-left:0px !important;padding-top:16px !important;padding-right:16px !important;padding-bottom:16px !important;padding-left:16px !important;}.stk-4d8d4ef {padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;margin-top:0px !important;margin-right:0px !important;margin-bottom:0px !important;margin-left:0px !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-4d8d4ef-container stk-hover-parent\"><div class=\"stk-block-content stk-inner-blocks stk-4d8d4ef-inner-blocks\">\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-ef60d5b\" data-block-id=\"ef60d5b\"><div class=\"stk-row stk-inner-blocks stk-block-content\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-74e0a57\" id=\"question-1-placeholder\" data-block-id=\"74e0a57\"><h5 class=\"stk-block-heading__text\">Q1: What counts as a good battery SOH percentage?<\/h5><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon stk-block-icon stk-block stk-b1aa5b0\" data-block-id=\"b1aa5b0\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><lineargradient id=\"linear-gradient-b1aa5b0\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-b-1-aa-5-b-0-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-b-1-aa-5-b-0-color-2)\"><\/stop><\/lineargradient><\/defs><\/svg><svg data-prefix=\"fas\" data-icon=\"chevron-down\" class=\"svg-inline--fa fa-chevron-down fa-w-14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 448 512\" aria-hidden=\"true\" width=\"32\" height=\"32\"><path fill=\"currentColor\" d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div><\/span><\/div>\n<\/div><\/div>\n<\/div><\/div><\/summary>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-df64f77 stk-block-accordion__content\" data-v=\"4\" data-block-id=\"df64f77\"><style>.stk-df64f77-container{padding-top:0px !important;padding-right:var(--stk--preset--spacing--40, 1rem) !important;padding-bottom:0px !important;padding-left:var(--stk--preset--spacing--40, 1rem) !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-df64f77-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-df64f77-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-11978c5\" data-block-id=\"11978c5\"><p class=\"stk-block-text__text\">A: A battery sitting above 90\u202f% SOH is considered close\u2011to\u2011new condition. While 80\u202f% SOH marks the common end\u2011of\u2011life reference point, usability depends entirely on your power requirements.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-stackable-accordion stk-block-accordion stk-inner-blocks stk-block-content stk-block stk-0a6f2d1 is-style-default\" data-block-id=\"0a6f2d1\"><style>.stk-0a6f2d1 {padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;margin-bottom:0px !important;}<\/style>\n<summary class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-f45222b stk--container-small stk-block-accordion__heading\" data-v=\"4\" data-block-id=\"f45222b\"><style>.stk-f45222b-container{margin-top:0px !important;margin-right:0px !important;margin-bottom:0px !important;margin-left:0px !important;padding-top:16px !important;padding-right:16px !important;padding-bottom:16px !important;padding-left:16px !important;}.stk-f45222b {padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;margin-top:0px !important;margin-right:0px !important;margin-bottom:0px !important;margin-left:0px !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-f45222b-container stk-hover-parent\"><div class=\"stk-block-content stk-inner-blocks stk-f45222b-inner-blocks\">\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-93cd7be\" data-block-id=\"93cd7be\"><div class=\"stk-row stk-inner-blocks stk-block-content\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-b5297a2\" id=\"question-1-placeholder\" data-block-id=\"b5297a2\"><h5 class=\"stk-block-heading__text\">Q2: Can voltage readings alone tell me battery health?<\/h5><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon stk-block-icon stk-block stk-a755e73\" data-block-id=\"a755e73\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><lineargradient id=\"linear-gradient-a755e73\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-a-755-e-73-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-a-755-e-73-color-2)\"><\/stop><\/lineargradient><\/defs><\/svg><svg data-prefix=\"fas\" data-icon=\"chevron-down\" class=\"svg-inline--fa fa-chevron-down fa-w-14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 448 512\" aria-hidden=\"true\" width=\"32\" height=\"32\"><path fill=\"currentColor\" d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div><\/span><\/div>\n<\/div><\/div>\n<\/div><\/div><\/summary>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-95a6b87 stk-block-accordion__content\" data-v=\"4\" data-block-id=\"95a6b87\"><style>.stk-95a6b87-container{padding-top:0px !important;padding-right:var(--stk--preset--spacing--40, 1rem) !important;padding-bottom:0px !important;padding-left:var(--stk--preset--spacing--40, 1rem) !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-95a6b87-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-95a6b87-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-a573d45\" data-block-id=\"a573d45\"><p class=\"stk-block-text__text\">A: No. Open\u2011circuit voltage only reflects SOC. An aged, degraded battery can still display perfectly normal resting voltage. Always combine voltage checks with capacity or resistance testing.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-stackable-accordion stk-block-accordion stk-inner-blocks stk-block-content stk-block stk-12a5293 is-style-default\" data-block-id=\"12a5293\"><style>.stk-12a5293 {padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;margin-bottom:0px !important;}<\/style>\n<summary class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-64e5a4a stk--container-small stk-block-accordion__heading\" data-v=\"4\" data-block-id=\"64e5a4a\"><style>.stk-64e5a4a-container{margin-top:0px !important;margin-right:0px !important;margin-bottom:0px !important;margin-left:0px !important;padding-top:16px !important;padding-right:16px !important;padding-bottom:16px !important;padding-left:16px !important;}.stk-64e5a4a {padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;margin-top:0px !important;margin-right:0px !important;margin-bottom:0px !important;margin-left:0px !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-64e5a4a-container stk-hover-parent\"><div class=\"stk-block-content stk-inner-blocks stk-64e5a4a-inner-blocks\">\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-77f5107\" data-block-id=\"77f5107\"><div class=\"stk-row stk-inner-blocks stk-block-content\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-49424d4\" id=\"question-1-placeholder\" data-block-id=\"49424d4\"><h5 class=\"stk-block-heading__text\">Q3: Can SOH go back up after dropping?<\/h5><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon stk-block-icon stk-block stk-9e03ee6\" data-block-id=\"9e03ee6\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><lineargradient id=\"linear-gradient-9e03ee6\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-9-e-03-ee-6-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-9-e-03-ee-6-color-2)\"><\/stop><\/lineargradient><\/defs><\/svg><svg data-prefix=\"fas\" data-icon=\"chevron-down\" class=\"svg-inline--fa fa-chevron-down fa-w-14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 448 512\" aria-hidden=\"true\" width=\"32\" height=\"32\"><path fill=\"currentColor\" d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div><\/span><\/div>\n<\/div><\/div>\n<\/div><\/div><\/summary>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-0179156 stk-block-accordion__content\" data-v=\"4\" data-block-id=\"0179156\"><style>.stk-0179156-container{padding-top:0px !important;padding-right:var(--stk--preset--spacing--40, 1rem) !important;padding-bottom:0px !important;padding-left:var(--stk--preset--spacing--40, 1rem) !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-0179156-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-0179156-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-835f08f\" data-block-id=\"835f08f\"><p class=\"stk-block-text__text\">A: Apparent SOH estimates may rise slightly after BMS recalibration or cell balancing. However, permanent capacity loss from chemical degradation cannot be reversed.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/details>\n\n\n\n<details class=\"wp-block-stackable-accordion stk-block-accordion stk-inner-blocks stk-block-content stk-block stk-1100a05 is-style-default\" data-block-id=\"1100a05\"><style>.stk-1100a05 {padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;margin-bottom:0px !important;}<\/style>\n<summary class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-ebf2e77 stk--container-small stk-block-accordion__heading\" data-v=\"4\" data-block-id=\"ebf2e77\"><style>.stk-ebf2e77-container{margin-top:0px !important;margin-right:0px !important;margin-bottom:0px !important;margin-left:0px !important;padding-top:16px !important;padding-right:16px !important;padding-bottom:16px !important;padding-left:16px !important;}.stk-ebf2e77 {padding-top:0px !important;padding-right:0px !important;padding-bottom:0px !important;padding-left:0px !important;margin-top:0px !important;margin-right:0px !important;margin-bottom:0px !important;margin-left:0px !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-ebf2e77-container stk-hover-parent\"><div class=\"stk-block-content stk-inner-blocks stk-ebf2e77-inner-blocks\">\n<div class=\"wp-block-stackable-icon-label stk-block-icon-label stk-block stk-cfb0f87\" data-block-id=\"cfb0f87\"><div class=\"stk-row stk-inner-blocks stk-block-content\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-4fc09c2\" id=\"question-1-placeholder\" data-block-id=\"4fc09c2\"><h5 class=\"stk-block-heading__text\">Q4: Why does my battery shut down before my monitor hits zero percent?<\/h5><\/div>\n\n\n\n<div class=\"wp-block-stackable-icon stk-block-icon stk-block stk-2c9ae94\" data-block-id=\"2c9ae94\"><span class=\"stk--svg-wrapper\"><div class=\"stk--inner-svg\"><svg style=\"height:0;width:0\"><defs><lineargradient id=\"linear-gradient-2c9ae94\" x1=\"0\" x2=\"100%\" y1=\"0\" y2=\"0\"><stop offset=\"0%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-2-c-9-ae-94-color-1)\"><\/stop><stop offset=\"100%\" style=\"stop-opacity:1;stop-color:var(--linear-gradient-2-c-9-ae-94-color-2)\"><\/stop><\/lineargradient><\/defs><\/svg><svg data-prefix=\"fas\" data-icon=\"chevron-down\" class=\"svg-inline--fa fa-chevron-down fa-w-14\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 448 512\" aria-hidden=\"true\" width=\"32\" height=\"32\"><path fill=\"currentColor\" d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div><\/span><\/div>\n<\/div><\/div>\n<\/div><\/div><\/summary>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-8e4b51a stk-block-accordion__content\" data-v=\"4\" data-block-id=\"8e4b51a\"><style>.stk-8e4b51a-container{padding-top:0px !important;padding-right:var(--stk--preset--spacing--40, 1rem) !important;padding-bottom:0px !important;padding-left:var(--stk--preset--spacing--40, 1rem) !important;}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-8e4b51a-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-8e4b51a-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-1b7c31d\" data-block-id=\"1b7c31d\"><p class=\"stk-block-text__text\">A: The most frequent causes include outdated capacity settings on your battery monitor, incomplete SOC synchronisation, cold operating temperatures, loose connections, cell imbalance or BMS safety shutdown events.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/details>\n<\/div><\/div><\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>When your battery shows a full\u2011charge reading yet runs out of power far sooner than expected, hidden capacity loss is usually to blame. This common frustration ties directly to&nbsp;battery State of Health (SOH). While most users track charge percentage (SOC), understanding SOH unlocks accurate runtime predictions, early degradation detection and smarter battery\u2011replacement decisions. This guide [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3632,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[154,155,149,148,156,157,153,150,151,152],"class_list":["post-3630","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-battery-aging","tag-battery-capacity-test","tag-battery-health","tag-battery-state-of-health","tag-bms-battery-monitoring","tag-end-of-life-battery","tag-lead-acid-battery-health","tag-lithium-ion-battery-degradation","tag-soc-vs-soh","tag-soh-battery"],"blocksy_meta":{"page_structure_type":"default","has_hero_section":"enabled","hero_section":"type-1","styles_descriptor":{"styles":{"desktop":"[data-prefix=\"single_blog_post\"] .entry-header .page-title {--theme-font-size:30px;} [data-prefix=\"single_blog_post\"] .entry-header .entry-meta {--theme-font-weight:600;--theme-text-transform:uppercase;--theme-font-size:12px;--theme-line-height:1.3;}","tablet":"","mobile":""},"google_fonts":[],"version":8},"hero_elements":[{"id":"custom_title","enabled":true,"heading_tag":"h1","title":"\u9996\u9875","__id":"VGv5eYHwsgAtwioxB-mD_"},{"id":"custom_description","enabled":true,"description_visibility":{"desktop":true,"tablet":true,"mobile":false},"__id":"YCqx4To-4tlk-_sA3f982"},{"id":"custom_meta","enabled":true,"meta_elements":[{"id":"author","enabled":true,"label":"\u4f5c\u8005","has_author_avatar":"yes","avatar_size":25},{"id":"post_date","enabled":true,"label":"\u4e8e","date_format_source":"default","date_format":"M j, Y"},{"id":"updated_date","enabled":false,"label":"\u4e8e","date_format_source":"default","date_format":"M j, Y"},{"id":"categories","enabled":true,"label":"\u4f4d\u4e8e","style":"simple"},{"id":"comments","enabled":true}],"page_meta_elements":{"joined":true,"articles_count":true,"comments":true},"__id":"6sYn7qHtajBoYEpm6ZYHc"},{"id":"breadcrumbs","enabled":false,"__id":"BxeXP7fZR4_ptYSSShSf3"},{"id":"content-block","enabled":false,"__id":"Xol0hvk5VfNpP-OiNahON"}],"content_style_source":"inherit"},"_links":{"self":[{"href":"https:\/\/bakth-battery.com\/de\/wp-json\/wp\/v2\/posts\/3630","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bakth-battery.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bakth-battery.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bakth-battery.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bakth-battery.com\/de\/wp-json\/wp\/v2\/comments?post=3630"}],"version-history":[{"count":3,"href":"https:\/\/bakth-battery.com\/de\/wp-json\/wp\/v2\/posts\/3630\/revisions"}],"predecessor-version":[{"id":3653,"href":"https:\/\/bakth-battery.com\/de\/wp-json\/wp\/v2\/posts\/3630\/revisions\/3653"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bakth-battery.com\/de\/wp-json\/wp\/v2\/media\/3632"}],"wp:attachment":[{"href":"https:\/\/bakth-battery.com\/de\/wp-json\/wp\/v2\/media?parent=3630"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bakth-battery.com\/de\/wp-json\/wp\/v2\/categories?post=3630"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bakth-battery.com\/de\/wp-json\/wp\/v2\/tags?post=3630"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}