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Early 2011 Model: A1278 / 2.3 GHz i5 or 2.7 GHz i7 processor

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New batter doesn't work

I replaced the battery on my Macbook Pro. Got the battery from ifixit brand new in March but didn’t replace it until yesterday 1/5/2020.

Installed properly and charged it up, but even though it shows 100%, it also says change battery immediately. If I unplug the cable then the computer shuts down as if no charge.

Any help or comments would be appreciated.

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Can you install this gem of an app CoconutBattery and take a snapshot of the app and post it here for us to see Adding images to an existing question

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In general, Li-ion battery loses capacity *even* if it is not used. Really - it loses capacity. Did you store the battery in a cool place (around 20 °C)? or was it lying exposed to sun/cold?

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Depending on who's battery the Andrew bought they may have a warranty which is what I would checkout and take advantage.

But, before going down that path I would check the battery and the charging logic to be sure the issue is the battery.

Besides, having something that shows the issue is more useful when going after a replacement!

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Andrew Kim will be eternally grateful.
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