While you wait for answers, we may have found some information which could help you.
Click here for Black Decker ChuckRepair Cordless Drill Battery?
Black and Decker drill 18v li-ion battery not charging?
how to get a drill bit out of a keyless chuck?
12v black decker a9275 replacement charger and battery?
how do I remove the chuck head ?
how to change to power cord on my black & decker H 552 400 Watt 10mm(3/8") ?