Karl Townsend wrote:
I often put a discharged dewalt or flashlight battery on the charger
and then forget to remove it. Am I hurting the battery? My better half
says I'm ruining them.

No way will I quit forgetting, should i get some sort of 120 volt
timer that only allows charging a couple hours a day?

Karl

If it's the older DeWalt the battery will self discharge a bit then the
charger will top it up. The problem then becomes cell memory.

If it's the new DeWalt charger this would be a good thing as it
supposedly does a battery conditioning charge.

--
Steve W.