12-27-2017 09:01 AM
Is it normal for a Thinkpad T470 to drain battery after it has been shut down completely? I first observed this after not using the notebook for about a week. After switching it back on, the external battery had lost more than 10% charge, while the internal battery's value hadn't changed.
Curiously, while using the notebook, this behavior is reversed, i.e. the internal battery is discharged first.
Things I tried so far:
I also ejected the external battery and disabled the internal battery before shutting down to make sure that they don't discharge by themselves. However, no drain occurred under this condition.
Effectively, none of these options have helped. The external battery still loses approximately 2% charge every 24 hours.