Chosen Solution
I’m facing an issue where my old MacBook Air’s battery works…. sometimes. When I unplug the power adapter, then the computer sometimes shuts down immediately, despite that the power adapter has been plugged in for a day. If the shutdown happens, then the computer behaves as if the battery is dead but then all of a sudden, maybe after a week, the battery starts to work like normal again (5 hours of battery, normal use). What could this be? I can’t replicate the issue and when I contacted apple then they do not know what could be wrong. Not sure if it’s worth mentioning but when the MacBook Air recovers from a sudden shutdown, then the time is set to January 1, 2018.
Well, I got some good news and some bad! The good news is your battery needs replacing. The batteries cycle life is only 1000, you’ve hit that and 300+ more times! The bad news is you’ll need to buy it MacBook Air 13" (Late 2010-2017) Battery and here’s the needed steps to put it in MacBook Air 13" Mid 2013 Battery Replacement
