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Model A1502 / 2.6 GHz (Turbo Boost up to 3.1 GHz) or 2.8 GHz (Turbo Boost up to 3.3 GHz) dual-core Intel Core i7 processor with 4MB shared L3 cache.

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Battery drops from 80% to 7% after replacement

Hello all.

Just purchased this battery from ifixit, and swapped the battery on this Mac a few days ago. After install I noticed first that the computer wouldn’t turn on without the power adapter. Once it was connected the computer powered on and immediately read 100% charge.

After a few hours of use the battery dropped from 70-80% all the way to 7. I plugged in the charger and the laptop charged normally to about 30% and shot up to 100% immediately. I have reset the SMC multiple times on this laptop. I have included some screenshots of coconut battery and activity monitor below.

Can’t believe this replacement battery has less capacity than the outgoing battery from 2014.

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Answer this question I have this problem too

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Contact the iFixit Store to get an exchange Contact iFixit Customer Support sadly it looks like you got a bad one.

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2 Comments:

Sounds like a plan. Will it hurt to use the replacement battery on the charger while I'm waiting for a replacement, or should I just put the old battery back into this computer?

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I think you'll be OK until they get you a replacement.

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Keagan Scott will be eternally grateful.
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