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Mid 2012 model, A1278 / 2.5 GHz i5 or 2.9 GHz i7 processor.

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battery and charging problems

bought a battery from ifixit

when charged, if i unplug charger the system shut off

while on battery power the system shuts off randomly

while on charger power the system keeps going to sleep

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Answer this question I have this problem too

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1 Comment:

seems you have a faulty battery

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1 Answer

Let’s do some testing of the battery. Complete the guide below; be sure to upload an image of the coconutBattery window to your existing question!

How to Test a Mac Laptop Battery

Adding images to an existing question

iFixit Image

Guide

Adding images to an existing question

Difficulty:

Very easy

2 - 5 minutes

Mac Laptop Image

Guide

How to Test a Mac Laptop Battery

Difficulty:

Very easy

3 - 5 minutes

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1 Comment:

Hi i added the coconut battery test.

While on the charger it's shutting down after the battery is fully charged,

when this happens i have to reset SMC to get it working again

While on battery it shuts off randomly (most times when battery is almost full)

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andrea edwards will be eternally grateful.
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