{"id":2486,"date":"2018-02-23T08:56:46","date_gmt":"2018-02-23T08:56:46","guid":{"rendered":"http:\/\/www.battaussie.com\/blog\/?p=2486"},"modified":"2018-02-23T08:56:46","modified_gmt":"2018-02-23T08:56:46","slug":"fix-percentage-incorrect-inaccurate-batteries-mac","status":"publish","type":"post","link":"https:\/\/www.battaussie.com\/blog\/fix-percentage-incorrect-inaccurate-batteries-mac.htm","title":{"rendered":"How to fix the percentage of incorrect or inaccurate batteries on Mac"},"content":{"rendered":"

A couple of different symptoms may be accompanied by installing a battery percentage table on your Mac, which is inaccurate. The most obvious is that your computer closes and dies at random before the percentage of the battery reaches 0% or even lower. The other is a sense of rapid depletion of the battery, or a decline in battery life.<\/p>\n

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If you suspect that the battery on your Mac is displaying an inaccurate percentage of battery life remaining, try some of these at-home solutions to reset or recalibrate the battery. Otherwise, a Genius Bar appointment at your local Apple<\/a> store might be necessary.<\/p>\n

iPhone users, listen up:<\/strong> We have written a detailed guide on charging your iPhone properly. Don\u2019t forget to check it out.<\/p>\n

Reset the System Management Controller (SMC)<\/h2>\n

The System Management Controller, or SMC, on your Mac is buried within the operating system and groups together various functions involving the display, battery power, booting, shutting down, sleeping, and more. If something gets out of whack with your battery indicator, resetting the SMC could refresh the battery percentage so it\u2019s accurate again.<\/p>\n

How to reset the SMC depends on the type of Mac you own. If you have an older Mac notebook with a removable Apple a1322 laptop battery<\/a><\/strong>, the first thing you\u2019ll want to do is shut down the computer and disconnect it from a power source. Remove the battery. Then, press and hold the power button for five seconds while the battery is still out of the machine. Insert the battery again, connect the laptop to a power source and turn it back on.<\/p>\n

If you have a newer MacBook model without a removable battery, the procedure is a bit different. Shut down the computer, but plug it in to a power source while off. Press the Shift, Control, Option<\/em> and power\u00a0keys all at the same time \u2014 the former three must be the keys on the left side of the keyboard.<\/p>\n

Closely monitor the battery percentage your Mac displays relative to your usage over the next day or two and observe if the SMC reset fixed the\u00a0problem.<\/p>\n

Calibrate Your Mac\u2019s Battery<\/h2>\n

Not only is keeping your battery calibrated important so that the battery percentage on your Mac stays accurate, but it\u2019s vital for optimal battery health over years and charge cycles.<\/p>\n

Battery calibration is easier than you might think. You should basically just use your computer like you normally do, except let the battery show off every bit of its power. First, plug in your Mac to a power source and charge it to full capacity, 100 percent. After fully charged, leave it plugged in for about two hours so it sits at a 100-percent charge.<\/p>\n

Unplug the Mac and start using it, letting the battery drain naturally. Eventually the battery will get low, so let it drain until the computer automatically goes to sleep. Once it\u2019s been asleep for a few minutes, plug the charging cable into your MacBook and recharge the computer back to 100 percent.<\/p>\n

This entire cycle is what calibrates the battery. Once the MacBook is recharged again, unplug the charging cable and notice as you use the machine whether the battery percentage appears to be more in sync with your usage.<\/p>\n

Tip:<\/strong> For an even closer look at your Apple a1057 battery<\/strong><\/a><\/span> usage, open the Activity Monitor app on your Mac. Click the\u00a0Energy<\/em>\u00a0tab at the top and glance down below for battery charts and statistics on current energy impact, remaining charge, time remaining, and battery drain over the past 12 hours.<\/p>\n

Schedule\u00a0a Genius Bar Appointment<\/h2>\n

When all else fails, make your battery someone else\u2019s problem! The geniuses behind the Genius Bar\u00a0at your local Apple retail store are probably capable of fixing the battery accuracy issue pretty quickly.<\/p>\n

Chances are they\u2019ll take care of it using one of two methods depending on the cause. The first solution is to replace the battery. This is covered if you\u2019re under warranty, including the one-year limited warranty if it\u2019s a manufacturer\u2019s defect. Otherwise, prices vary by MacBook model.<\/p>\n

Coming in at $129 are the replacement batteries for any MacBook Air, the 13-inch MacBook and the 13-inch and 15-inch non-retina MacBook Pros. $179 replaces the battery in the 17-inch MacBook Pro and $199 covers the 12-inch MacBook and 13-inch and 15-inch retina MacBook Pros.<\/p>\n

These prices include the battery itself and the repair service, i.e. the Apple Geniuses recycle the old battery and install the new one for you.<\/p>\n

If you don\u2019t need a battery replacement, the Geniuses still have tools on hand for running tests on your MacBook and diagnosing any issues, so it still may be worth a trip to the Apple Store. The cost to fix any diagnosed issues will differ based on the cause and procedure.<\/p>\n","protected":false},"excerpt":{"rendered":"

A couple of different symptoms may be accompanied by installing a battery percentage table on your Mac, which is inaccurate. The most obvious is that your computer closes and dies at random before the percentage of the battery reaches 0% or even lower. The other is a sense of rapid depletion of the battery, or […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,3,4,6],"tags":[932,463,933],"class_list":["post-2486","post","type-post","status-publish","format-standard","hentry","category-battery-knowledge-base","category-how-to","category-laptop-batteries-tips","category-tech-info","tag-apple-a1057-battery","tag-apple-a1322-laptop-battery","tag-apple-m1906-laptop-battery"],"_links":{"self":[{"href":"https:\/\/www.battaussie.com\/blog\/wp-json\/wp\/v2\/posts\/2486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.battaussie.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.battaussie.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.battaussie.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.battaussie.com\/blog\/wp-json\/wp\/v2\/comments?post=2486"}],"version-history":[{"count":1,"href":"https:\/\/www.battaussie.com\/blog\/wp-json\/wp\/v2\/posts\/2486\/revisions"}],"predecessor-version":[{"id":2488,"href":"https:\/\/www.battaussie.com\/blog\/wp-json\/wp\/v2\/posts\/2486\/revisions\/2488"}],"wp:attachment":[{"href":"https:\/\/www.battaussie.com\/blog\/wp-json\/wp\/v2\/media?parent=2486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.battaussie.com\/blog\/wp-json\/wp\/v2\/categories?post=2486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.battaussie.com\/blog\/wp-json\/wp\/v2\/tags?post=2486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}