My Macbook Air is fairly new and showing battery X sign.
My Macbook Air is fairly new. I stopped using it for several months and now the battery icon has an X. It does not charge and it won't work unless plugged into a power source. Also, it automatically turns on as soon as a plug it in. When I check the battery health it says "normal" and a maximum capacity of 100%.
MacBook Air 13″, macOS 11.2