Chosen Solution
I replaced my 2014 MBA’s (OSX Mojave 10.14.5) battery with the ifixit kit and followed the instructions for calibrating it. I never felt like it lasted as long as a new battery should, but particularly after less than 2 months, the new battery is as bad as the one it replaced. It discharges from 100% to shutting down (under 5%) usually within an hour. I’ve tried calibrating again, but each time I do, it only seems to get worse. The battery icon tells me “Service Battery” and the CoconutBattery gives me the following worrying information:
Is there a reason why the battery would only be getting about 1/5th its design capacity after light use over a month and a half? Do you think it’s just a bad battery or is it an OSX problem?
Looks like you got a bad one ;-{ Contact the iFixit Store for a free replacement!
