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

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Why is my new battery loosing juice so fast?

I purchased a new battery from you guys for my macbook pro and it seems like it is probably defective. For example, just now It went from 20% battery to life to 6%.

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Be sure to do a calibration, if the issue remains reach out to ifixit https://www.google.com/url?sa=t&rct=j&q=...

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After you calibrate it, let’s take a closer look at it with a better tool. Please download, install, run and post your results using Coconut Battery.

https://www.coconut-flavour.com/coconutb...

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Jill will be eternally grateful.
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