에 의해 작성된 Michael Frister
1. When charging, Battery Time shows the remaining time to charge the battery up to 100%.
2. Battery Time shows the remaining time your Pc can run on its battery in the menu bar.
3. The remaining time varies depending on usage, so you can see when your Pc suddenly consumes more power.
4. E.g. when starting to watch an HD video after surfing the web, the time decreases after a few seconds.
PcMac Store 
