{"id":1405,"date":"2025-04-27T18:34:40","date_gmt":"2025-04-27T17:34:40","guid":{"rendered":"https:\/\/3c71.com\/wp\/?p=1405"},"modified":"2025-04-27T18:34:41","modified_gmt":"2025-04-27T17:34:41","slug":"how-accurate-is-calculated-measured-mah","status":"publish","type":"post","link":"https:\/\/3c71.com\/wp\/how-accurate-is-calculated-measured-mah\/","title":{"rendered":"How accurate is calculated\/measured mAh"},"content":{"rendered":"\n<p>The app calibration screen provides a battery real capacity (mAh) based on historical charge cycle data being logged by the app.<\/p>\n\n\n\n<p>First, it&#8217;s important to differentiate the 2 types of phones:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Phones providing real mA measures<\/li>\n\n\n\n<li>Phones not providing mA measures while charging (main screen shows &#8220;Estimated: xx mA&#8221; while charging)<\/li>\n<\/ul>\n\n\n\n<p>The first category of&nbsp;<strong>phones, with real mA measures, will calculate real battery capacity mAh<\/strong>&nbsp;no matter how the app is configured.<\/p>\n\n\n\n<p>The second category requires special attention and the app need to be configured in this way:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A battery profile must be created with the manufacturer&#8217;s specified battery capacity (mAh) and the AC charger output power or<\/li>\n\n\n\n<li>The in-use capacity must be set to the manufacturer&#8217;s specs<\/li>\n\n\n\n<li>The AC charger output power must be set matching charger&#8217;s specs.<\/li>\n<\/ul>\n\n\n\n<p>The app will then use 3 simple facts to determine the real battery capacity:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Charging can&#8217;t go over the charger output power (frequently 1000mA).<\/li>\n\n\n\n<li>From 0% to 50%, phone uses the maximum charger capacity.<\/li>\n\n\n\n<li>Above 50% charging rate is lowered to protect battery from aging faster.<\/li>\n<\/ul>\n\n\n\n<p>If the charging consistently goes over the charger power, it means the defined mAh is over-estimated and the app will adjust the results accordingly.<\/p>\n\n\n\n<p>If the charging consistenly stays lower than charger power while screen is off, it means the defined mAh is under-estimated and the app will&nbsp;adjust the results accordingly.<\/p>\n\n\n\n<p>So it&#8217;s important to set the original battery capacity when using extended battery as it is easier to adjust over-estimated values than adjust under-estimated because the later requires the screen to be switched off. While screen is on charging is always lower than charger power hence the need to have the screen off.<\/p>\n\n\n\n<p>Whether the battery capacity is set to 2000mAh or 20.000mAh the app will easily discover a lower battery capacity because the charging (mA) will consistently be above actual charging power between 0% and 50%.<\/p>\n\n\n\n<p>Here is a way to correlate the results: Charging times increase with battery capacity, eg a 3500mAh battery must take longer to charge than a 2100mAh battery.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The app calibration screen provides a battery real capacity (mAh) based on historical charge cycle&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-1405","post","type-post","status-publish","format-standard","hentry","category-faq"],"_links":{"self":[{"href":"https:\/\/3c71.com\/wp\/wp-json\/wp\/v2\/posts\/1405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3c71.com\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/3c71.com\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/3c71.com\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/3c71.com\/wp\/wp-json\/wp\/v2\/comments?post=1405"}],"version-history":[{"count":1,"href":"https:\/\/3c71.com\/wp\/wp-json\/wp\/v2\/posts\/1405\/revisions"}],"predecessor-version":[{"id":1406,"href":"https:\/\/3c71.com\/wp\/wp-json\/wp\/v2\/posts\/1405\/revisions\/1406"}],"wp:attachment":[{"href":"https:\/\/3c71.com\/wp\/wp-json\/wp\/v2\/media?parent=1405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/3c71.com\/wp\/wp-json\/wp\/v2\/categories?post=1405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/3c71.com\/wp\/wp-json\/wp\/v2\/tags?post=1405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}