I recently came into several Dewalt battery handtools from a friend that closed his sign business. All excellent except one of the batteries and three others don't hold a charge very well. I checked with Battery Plus and they can repair or sell me new ones. Question one-can you buy the parts and repair yourself? If so where would I find the repair parts? Second will it help to leave the battteries in the charger all the time, will that keep them fully charges. This is not my area of expertise so I can use advice. Thanks for anything you can help me with.
Ken