While you wait for answers, we may have found some information which could help you.
Click here for Trigger Hammer Drillhow can I fix my black & decker kr600cre drill?
12v black decker a9275 replacement charger and battery?
Repair Cordless Drill Battery?
how to get a drill bit out of a keyless chuck?
how do i remove a bit from stuck keyed chuck?
Black & Decker 12V battery pack fails to charge?