Device failing to power up with old and new battery.

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MacBook Pro 13 "Retina Display Late 2012

3MB 공유 L3 캐시 2.5 GHz 듀얼-코어 Intel Core i5 프로세서 (Turbo Boost 최대 3.1 GHz).

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stuy_o @stuyo

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게시일: 2019년 10월 11일

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Device failing to power up with old and new battery.

Hi everyone.

About a month ago my charger for my mac needed replacing, so I used my mac till the battery was really low then turned it off, planning to use it when I got myself a new charger.

When I tried to turn it on with the new charger the laptop remained lifeless. The magsafe displayed a green light, saying the battery was charged, but I knew this not to be the case as I'd let it run down on charge. After trying several solutions I deduced it was an old battery that needed replacing - as it wasnt receiving any charge.

So I ordered a new battery, popped it in an the laptop came on and everything was fine again. Good as new.

Today however it is doing exactly the same as under the previous battery. I was using it this morning and put the lid down… went to turn it on and the same problems are back. It seems that if the battery gets really low the laptop cant detect any charge. Pulling my hair out with this. Any fixes/ideas?

A few points.. the mac wont even turn on without a battery and Iv tried smc reset and absolutely nothing happens. FWIW, I hadn't yet recalibrated power on the new battery.

Any help much appreciated. Stu

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arbaman @arbaman

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게시일: 2019년 10월 11일

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There isn’t much one can do to help you at a distance with a logic board failure. Your Mac should start on its own as soon as you plug in the Magsafe when battery is not connected..add to that the fact it doesn’t even charge the battery and you’re left with a high chance the battery charging circuit is faulty. All you can do is try to find a Lab into component level repairs or replace your logic board.

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Thanks for answer. The new battery did charge prior to me letting it run down, a silly thing to do I know. The issue seems to be once the battery is flat thats when the charging ceases. I have every confidence if I got a new battery and put it in the mac would fire up again. I'm a bit wary of having to spend lots on the logic board when I know a new battery and keeping it on a decent amount of charge would work.

stuy_o 의 2019년 10월 11일

It sounds very similar to the charging chip faults that iPhones get where it can charge batteries but not when they become flat. This can definitely be repaired but only by a reputable macbook repair store that does board-repairs.

Ben 의 2019년 10월 11일

@benjamen50 Yes, that sounds very much like a Tristar failure if only there was one inside. Quite an uncommon issue on Macs though.

arbaman 의 2019년 10월 11일

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Thanks for answer. The new battery did charge prior to me letting it run down, a silly thing to do I know. The issue seems to be once the battery is flat thats when the charging ceases. I have every confidence if I got a new battery and put it in the mac would fire up again. I'm a bit wary of having to spend lots on the logic board when I know a new battery and keeping it on a decent amount of charge would work. — stuy_o
It sounds very similar to the charging chip faults that iPhones get where it can charge batteries but not when they become flat. This can definitely be repaired but only by a reputable macbook repair store that does board-repairs. — Ben
@benjamen50 Yes, that sounds very much like a Tristar failure if only there was one inside. Quite an uncommon issue on Macs though. — arbaman

MacBook Pro 13 "Retina Display Late 2012

Device failing to power up with old and new battery.

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