While you wait for answers, we may have found some information which could help you.
Click here for Electric Lawnmower GrassFaulty Bosch AL3640CV Charger or Battery?
How can I fix my Bosch Rotak 37 lawnmower?
re spring lever on Bosch 34R mower?
Bosh roteck battery mower shudders/spins but then stops?
Repairing a Bosch AL 3640 CV lawnmower charger?
Bosch Rotak cuts out after 3 seconds?