Battery for Mac laptop
How long will my battery last plugged in direct to power?
MacBook Air 13″, macOS 10.15
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janne5707 wrote:
How long will my battery last plugged in direct to power?
It will do no harm having your battery plugged in all the time.
About Mac notebook batteries
https://support.apple.com/en-us/HT204054
Batteries - Maximizing Performance - Apple
https://www.apple.com/batteries/maximizing-performance/
Determine battery cycle count for Mac notebooks
https://support.apple.com/en-us/HT201585
About battery health management in Mac notebooks https://support.apple.com/en-us/HT211094