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Apple의 MacBook Air 13" 2014년 4월 업데이트에는 참신한 듀얼-코어 i5 및 i7 프로세서와 더불어 배터리 성능을 약간 향상시켰습니다.

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MBA replaced battery short battery life + low % design capacity

I replaced my 2014 MBA’s (OSX Mojave 10.14.5) battery with the ifixit kit and followed the instructions for calibrating it. I never felt like it lasted as long as a new battery should, but particularly after less than 2 months, the new battery is as bad as the one it replaced. It discharges from 100% to shutting down (under 5%) usually within an hour. I’ve tried calibrating again, but each time I do, it only seems to get worse.

The battery icon tells me “Service Battery” and the CoconutBattery gives me the following worrying information:

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Is there a reason why the battery would only be getting about 1/5th its design capacity after light use over a month and a half? Do you think it’s just a bad battery or is it an OSX problem?

답변되었습니다! 답변 보기 저도 같은 문제를 겪고 있습니다

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Update: I also ran Quicktime to record my screen and it rapidly decreased from 90-something to 70 in about 15 minutes. Then, less than 16 minutes into battery power, it jumped down to 6%. It wasn't even an incremental drop, it literally went from 70% to 6% in a blink of the eye.

Yep - You got a bad battery contact the iFixit store to get a replacement.

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Looks like you got a bad one ;-{

Contact the iFixit Store for a free replacement!

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Indeed, after talking to support, they seemed to agree and are sending a replacement.

For the record, if anyone else incurs this problem, my percentage of Design Capacity (as reported by CoconutBattery) kept shrinking rapidly. It went from 20.3% at the time of my first posting to 13.2% just a day later. The battery definitely has something wrong with it.

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