While you wait for answers, we may have found some information which could help you.
Click here for Chuck Bosch Psbwhy is my Bosch GSB VE2LI drill getting slower (its not the battery)?
repair bosch electric drill?
shut off valve location?
how can i fix my bosch cordless drill psb 18 li2?
Bosch PSB 24 VE-2 drill with AL 60 DV 2411 charger?
How can I open my Bosch 18V 2.6Ah Ni-MH Battery? ?