While you wait for answers, we may have found some information which could help you.
Click here for Bosch Gbh 4 DfeHow can I open my Bosch 18V 2.6Ah Ni-MH Battery? ?
repair bosch electric drill?
why is my Bosch GSB VE2LI drill getting slower (its not the battery)?
what wattage is the r3 resistor in thebosch al 2450dv charger?
Bosch GBH 2-24 DSR 0611 228 742?
how to bypass switch Bosch 1021 VSR?