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https://www.ifixit.com/products/macbook-pro-15-retina-mid-2015-battery
A1618 Battery for MacBook Pro 15" Retina A1398 (Mid 2015)
Replace a 8800 mAh battery compatible with a MacBook Pro 15" Retina (Mid 2015). 99 Watt Hours (Wh), 11.26 Volts (V.)
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