I seem to have done some damage to my usually-reliable mid-2012 MacBook Pro. Yesterday I removed the power cable when a thunderstorm roared in. It died immediately instead of continuing on battery, as it has always done before. The battery was at about 88% when I disconnected the power. Now it is at 40% even though it’s plugged in…down to 36% now.
It won’t start up or run on battery now and I’m concerned it won’t function at all when the battery dies completely.
Does anyone have any suggestions as to what caused the sudden death of the battery. Could there be some damage to the interface between the battery and the CPU?
I obviously don’t know what I’m talking about. Would appreciate some insight, please.
It’s working fine while it’s plugged in.