NEVER buy one from Harbor Freight!!!!! I had one in a plastic case and was going to use it one day but the charge was low. I charged it up while I did some other work and then didn't end up using it. I put it back in the case with the battery in the drill. I left the boat for just a min. and returned as I forgot something. I smelled electrical burning smell upon entering the pilot house! I walked around the boat trying to find where it was coming from! I remembered charging the drill and went to where it was stored and the case was melting ....about to start burning!! Got it out of the boat and opened it on the dock...drill was melted case full of smoke!! I damn near burnt my 70 Sport Deck to the waterline that day!! I never leave the battery in the tool anymore and never buy cheep tools now either!! Very close call on loosing the boat!