{"id":488,"date":"2025-01-02T18:50:51","date_gmt":"2025-01-02T18:50:51","guid":{"rendered":"https:\/\/www.custom-battery-packs.com\/?p=488"},"modified":"2025-01-02T18:52:46","modified_gmt":"2025-01-02T18:52:46","slug":"lithium-ion-battery-capacity-calculation","status":"publish","type":"post","link":"https:\/\/www.battery-packs.net\/fr\/488\/","title":{"rendered":"lithium-ion battery capacity calculation"},"content":{"rendered":"<p>How to calculate the capacity of lithium-ion batteries<\/p>\n<p>The capacity of lithium-ion batteries is an important indicator for measuring their performance, usually measured in milliampere hours (mAh) or ampere hours (Ah). Here are several methods for calculating the capacity of lithium-ion batteries:<\/p>\n<p>Method 1: Calculation based on rated current and usage time<\/p>\n<p>Formula: Capacity (mAh)=Rated current (mA) x Usage time (hours). \u200c<br \/>\none<br \/>\nExample: If a lithium battery has a rated current of 1000mA and a usage time of 2 hours, its capacity can be calculated as: Capacity=1000mA \u00d7 2 hours=2000mAh.<br \/>\nAttention: This method is calculated at the rated current of the battery. In practical use, if there are changes in current or different operating temperatures of the battery, the capacity may deviate.<br \/>\nMethod 2: Calculation based on battery stored energy and voltage<\/p>\n<p>Steps:<br \/>\nFirstly, determine the voltage V (volts) of the battery. \u200c<br \/>\ntwo<br \/>\nthree<br \/>\nThe energy stored in the battery, W (joules), can be obtained by multiplying the voltage of the battery by its current (unit: ampere A). The formula is: W=V \u00d7 I.<br \/>\nFinally, the capacity Ah of the battery is obtained by dividing the energy W by the discharge time (in hours h). The formula is: Ah=W\/(h \u00d7 V).<br \/>\nExample: Suppose there is a lithium-ion battery with a voltage of 3.7V, a current of 10A passing through the battery, and a duration of 1 hour. So we can calculate:<br \/>\nThe energy stored in the battery is W=3.7V \u00d7 10A=37Wh.<br \/>\nBattery capacity: Ah=37Wh\/(1 hour x 3.7V) \u2248 10Ah.<br \/>\nFactors affecting the capacity of lithium batteries<\/p>\n<p>Current variation: In actual use, if there is a change in current, the capacity of the battery may deviate.<br \/>\nWorking temperature: The working temperature of a battery can also affect its capacity.<br \/>\nBattery aging: With the use and passage of time, the capacity of the battery will gradually decrease. \u200c<br \/>\nfour<br \/>\nBattery type: The capacity of different types of lithium-ion batteries (such as lithium iron phosphate batteries, lithium cobalt oxide batteries, etc.) will also vary.<br \/>\nIn summary, when calculating the capacity of lithium-ion batteries, appropriate methods can be selected based on the actual situation, and factors such as current, temperature, and battery aging can be considered to affect the capacity.<br \/>\n&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-<br \/>\n\u5982\u4f55\u8ba1\u7b97\u200c\u9502\u79bb\u5b50\u7535\u6c60\u5bb9\u91cf\u200c<\/p>\n<p>\u9502\u79bb\u5b50\u7535\u6c60\u7684\u5bb9\u91cf\u662f\u8861\u91cf\u5176\u6027\u80fd\u7684\u91cd\u8981\u6307\u6807\uff0c\u901a\u5e38\u4ee5\u200c\u6beb\u5b89\u65f6\uff08\u200cmAh\uff09\u6216\u5b89\u65f6\uff08Ah\uff09\u4e3a\u5355\u4f4d\u3002\u4ee5\u4e0b\u662f\u8ba1\u7b97\u9502\u79bb\u5b50\u7535\u6c60\u5bb9\u91cf\u7684\u51e0\u79cd\u65b9\u6cd5\uff1a<\/p>\n<p>\u200c\u65b9\u6cd5\u4e00\uff1a\u57fa\u4e8e\u200c\u989d\u5b9a\u7535\u6d41\u548c\u4f7f\u7528\u65f6\u95f4\u7684\u8ba1\u7b97\u200c<\/p>\n<p>\u200c\u516c\u5f0f\u200c\uff1a\u5bb9\u91cf(mAh) = \u989d\u5b9a\u7535\u6d41(mA) \u00d7 \u4f7f\u7528\u65f6\u95f4(\u5c0f\u65f6)\u3002\u200c<br \/>\n1<br \/>\n\u200c\u793a\u4f8b\u200c\uff1a\u5982\u679c\u4e00\u4e2a\u9502\u7535\u6c60\u7684\u989d\u5b9a\u7535\u6d41\u4e3a1000mA\uff0c\u4f7f\u7528\u65f6\u95f4\u4e3a2\u5c0f\u65f6\uff0c\u90a3\u4e48\u5b83\u7684\u5bb9\u91cf\u53ef\u4ee5\u8ba1\u7b97\u4e3a\uff1a\u5bb9\u91cf = 1000mA \u00d7 2\u5c0f\u65f6 = 2000mAh\u3002<br \/>\n\u200c\u6ce8\u610f\u4e8b\u9879\u200c\uff1a\u6b64\u65b9\u6cd5\u662f\u5728\u7535\u6c60\u7684\u989d\u5b9a\u7535\u6d41\u4e0b\u8fdb\u884c\u8ba1\u7b97\u7684\u3002\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u5982\u679c\u7535\u6d41\u6709\u53d8\u5316\u6216\u8005\u7535\u6c60\u7684\u5de5\u4f5c\u6e29\u5ea6\u4e0d\u540c\uff0c\u5bb9\u91cf\u53ef\u80fd\u4f1a\u6709\u6240\u504f\u5dee\u3002<br \/>\n\u200c\u65b9\u6cd5\u4e8c\uff1a\u57fa\u4e8e\u7535\u6c60\u50a8\u5b58\u80fd\u91cf\u548c\u7535\u538b\u7684\u8ba1\u7b97\u200c<\/p>\n<p>\u200c\u6b65\u9aa4\u200c\uff1a<br \/>\n\u9996\u5148\u786e\u5b9a\u7535\u6c60\u7684\u7535\u538bV\uff08\u4f0f\u7279\uff09\u3002\u200c<br \/>\n2<br \/>\n3<br \/>\n\u7528\u7535\u6c60\u7684\u7535\u538b\u4e58\u4ee5\u7535\u6c60\u7684\u7535\u6d41\uff08\u5355\u4f4d\uff1a\u5b89A\uff09\uff0c\u5c31\u53ef\u4ee5\u5f97\u5230\u7535\u6c60\u50a8\u5b58\u7684\u80fd\u91cfW\uff08\u7126\u8033\uff09\u3002\u516c\u5f0f\u4e3a\uff1aW = V \u00d7 I\u3002<br \/>\n\u6700\u540e\u7528\u80fd\u91cfW\u9664\u4ee5\u653e\u7535\u65f6\u95f4\uff08\u5c0f\u65f6h\uff09\uff0c\u5c31\u5f97\u5230\u4e86\u7535\u6c60\u7684\u5bb9\u91cfAh\u3002\u516c\u5f0f\u4e3a\uff1aAh = W \/ (h \u00d7 V)\u3002<br \/>\n\u200c\u793a\u4f8b\u200c\uff1a\u5047\u8bbe\u6709\u4e00\u4e2a\u9502\u79bb\u5b50\u7535\u6c60\uff0c\u5176\u7535\u538b\u4e3a3.7V\uff0c\u901a\u8fc7\u8be5\u7535\u6c60\u7684\u7535\u6d41\u4e3a10A\uff0c\u6301\u7eed\u65f6\u95f4\u4e3a1\u5c0f\u65f6\u3002\u90a3\u4e48\u53ef\u4ee5\u8ba1\u7b97\u5f97\u5230\uff1a<br \/>\n\u7535\u6c60\u50a8\u5b58\u7684\u80fd\u91cf\uff1aW = 3.7V \u00d7 10A = 37Wh\u3002<br \/>\n\u7535\u6c60\u5bb9\u91cf\uff1aAh = 37Wh \/ (1\u5c0f\u65f6 \u00d7 3.7V) \u2248 10Ah\u3002<br \/>\n\u200c\u9502\u7535\u6c60\u5bb9\u91cf\u7684\u5f71\u54cd\u56e0\u7d20\u200c<\/p>\n<p>\u200c\u7535\u6d41\u53d8\u5316\u200c\uff1a\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u5982\u679c\u7535\u6d41\u6709\u53d8\u5316\uff0c\u7535\u6c60\u7684\u5bb9\u91cf\u53ef\u80fd\u4f1a\u6709\u6240\u504f\u5dee\u3002<br \/>\n\u200c\u5de5\u4f5c\u6e29\u5ea6\u200c\uff1a\u7535\u6c60\u7684\u5de5\u4f5c\u6e29\u5ea6\u4e5f\u4f1a\u5f71\u54cd\u5176\u5bb9\u91cf\u3002<br \/>\n\u200c\u7535\u6c60\u8001\u5316\u200c\uff1a\u968f\u7740\u7535\u6c60\u7684\u4f7f\u7528\u548c\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u7535\u6c60\u7684\u5bb9\u91cf\u4f1a\u9010\u6e10\u964d\u4f4e\u3002\u200c<br \/>\n4<br \/>\n\u200c\u7535\u6c60\u7c7b\u578b\u200c\uff1a\u4e0d\u540c\u7c7b\u578b\u7684\u9502\u79bb\u5b50\u7535\u6c60\uff08\u5982\u78f7\u9178\u94c1\u9502\u7535\u6c60\u3001\u94b4\u9178\u9502\u7535\u6c60\u7b49\uff09\u5176\u5bb9\u91cf\u4e5f\u4f1a\u6709\u6240\u4e0d\u540c\u3002<br \/>\n\u7efc\u4e0a\u6240\u8ff0\uff0c\u8ba1\u7b97\u9502\u79bb\u5b50\u7535\u6c60\u5bb9\u91cf\u65f6\uff0c\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u5e76\u8003\u8651\u7535\u6d41\u3001\u6e29\u5ea6\u3001\u7535\u6c60\u8001\u5316\u7b49\u56e0\u7d20\u5bf9\u5bb9\u91cf\u7684\u5f71\u54cd\u3002<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.custom-battery-packs.com\/wp-content\/uploads\/2025\/01\/20241221171306526.jpg\"  width=\"500\" height=\"500\" class=\"alignnone size-full wp-image-491\" srcset=\"https:\/\/www.battery-packs.net\/wp-content\/uploads\/2025\/01\/20241221171306526.jpg 500w, https:\/\/www.battery-packs.net\/wp-content\/uploads\/2025\/01\/20241221171306526-300x300.jpg 300w, https:\/\/www.battery-packs.net\/wp-content\/uploads\/2025\/01\/20241221171306526-150x150.jpg 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" title=\"lithium-ion battery capacity calculation-Battery Packs\" alt=\"lithium-ion battery capacity calculation-Battery Packs\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>How to calculate the capacity of lithium-ion batteries The capacity of lithium-ion batteries is an important indicator for measuring their performance, usually measured in milliampere &hellip;<\/p>","protected":false},"author":1,"featured_media":491,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[214],"tags":[],"class_list":["post-488","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.battery-packs.net\/fr\/wp-json\/wp\/v2\/posts\/488","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.battery-packs.net\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.battery-packs.net\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.battery-packs.net\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.battery-packs.net\/fr\/wp-json\/wp\/v2\/comments?post=488"}],"version-history":[{"count":4,"href":"https:\/\/www.battery-packs.net\/fr\/wp-json\/wp\/v2\/posts\/488\/revisions"}],"predecessor-version":[{"id":493,"href":"https:\/\/www.battery-packs.net\/fr\/wp-json\/wp\/v2\/posts\/488\/revisions\/493"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.battery-packs.net\/fr\/wp-json\/wp\/v2\/media\/491"}],"wp:attachment":[{"href":"https:\/\/www.battery-packs.net\/fr\/wp-json\/wp\/v2\/media?parent=488"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.battery-packs.net\/fr\/wp-json\/wp\/v2\/categories?post=488"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.battery-packs.net\/fr\/wp-json\/wp\/v2\/tags?post=488"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}