After four years of daily use our MacBook Air informed us that it needed a battery replacement. That’s kind of nice to know, in particular as it still feels speedy and otherwise just works. A new battery isn’t that expensive and according to iFixit it appeared to be quite easy to replace it. I needn’t to worry, it was actually super simple, given appropriate tools:
Remove 10 screws from bottom caseOpen caseDisconnect batteryRemove 5 screws from batterySwap batteryReassemble everything back togetherJob done.