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Model A1286. Released February 2011 / 2.0, 2.2, or 2.3 GHz Quad-core Intel Core i7 Processor

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Battery Percentage Icon - Not accurate/ false reading after replacing

I recently replaced my OEM laptop battery with an iFixit battery. After installing, the battery charge percentage icon seems to give inaccurate readings. I discharged the battery, then charged fully to 100% as soon as the battery was replaced. It’s seems to show drastic jumps (example: showing 72% then a few min later showing 8%). The actual charge seems to be more than what is reflected when it drops down to a low percentage.



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Let’s do some testing of the battery. Complete the guide I have linked to below and attach screenshots of The coconutBattery window to your existing question. Take one screenshot with the MagSafe charger connected and another one with the MagSafe charger disconnected.

How to Test a Mac Laptop Battery

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