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Hi. I cant figure out the compatibility of macbook battery in the late 2013 - mid 2015 A1398 models. Will a battery with model number A1494 fit a 2015 A1398 MBP? Or will i need a newer battery with model number A1618? Some sites / vendors says the A1494 will fit, some says it does not. I get the difference in the mAh. 8440 mAh in A1494 and 8740 in A1618. Can anyone clarify? Thanks a lot!
If you review the iFixit batteries MacBook Pro 15" Retina (Late 2013-Mid 2014) Battery MacBook Pro 15" Retina (Mid 2015) Battery You’ll see the power values are different! While Apple did stick with the same dimensions and the connection to the logic board is the same for both. The chemistry of the batteries is different as such the charging rate programed in micro-controller and SMC what match up properly. I suspect some of the battery failures we have seen are do to the wrong battery being used.
