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Apple의 MacBook Air 13" 2015년 5월 업데이트에는 5 세대 Intel Core i5 및 i7 프로세서가 성능과 배터리 수명을 약간 향상시켰습니다.

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Does my battery need servicing?

I’ve had my 13” MacBook Air since around August 2016 and it had been working perfectly until around last year or around whenever the Mojave update rolled out. At first, I noticed that my battery drained faster than normal (it used to last around 18 hours) and then I saw the “service battery” warning (from “normal” to “service battery”). I tried to reset the SMC, I still have plenty of storage left and my fans aren’t running excessively. As of today, my cycle count is only 483 out of the 1000 max cycle count listed on Apple’s support page. Nowadays, it only lasts around 5 hours and shuts down/sleeps at around 30%. Just today I noticed that I left it to charge overnight but the magsafe is still orange and the battery percentage is still only 81%. From what I’ve read from other websites, I could try recalibrating the battery or the problem could be linked to software bugs, glitches, etc. But before I give up and decide to take my computer to the store to get a new battery and a checkup, is there anything else I can do or try or any other explanations for my battery’s strange behavior?

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Update: charging problem has been fixed, but I also forgot to mention that it also loses battery while sleeping and while shut down, which hasn't happened before

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Let’s take a look at it with a better tool. Please run Coconut Battery and post your results.

https://www.coconut-flavour.com/coconutb...

You certainly don’t need to take it in for a battery replacement as it is extremely simple:

MacBook Air 13" Early 2015 배터리 교체

MacBook Air 13" (Late 2010-2017) Battery

UPDATE 6/2/19

Thanks for the battery read out. Time for a new one.

MacBook Air 13" (Late 2010-2017) Battery 이미지

상품

MacBook Air 13" (Late 2010-2017) Battery

$69.99

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CoconutBattery Results:

Current Charge: 2166 mAh

Full Charge Capacity: 2394 mAh; 97.5% (mac's percentage is at 100%)

Design Capacity: 37.5%

@flaoofy That's a nearly dead battery, 37.5 of design capacity says it all.

My battery is barely a few months old, and it does the same as the previous one I replaced. I am halfway or at 45% and instantly I get a message that my battery is only 2% left and need to charge urgently. This has happened 3 times now, and as a consequence, I lost from the life of 112 % a 12%. I have done and tried the reset manipulation for SMC and for the RAM…I do not understand how I will know that I reset my battery or renewed it unless I run my battery down again to 45% and then 2%? ? I have no idea what I am doing.

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