While you wait for answers, we may have found some information which could help you.
Success
Message
Faulty Bosch AL3640CV Charger or Battery?
re spring lever on Bosch 34R mower?
How can I fix my Bosch Rotak 37 lawnmower?
How can I fix?
Repairing a Bosch AL 3640 CV lawnmower charger?
Faulty Bosch AL3640CV Charger?
Bosch charger Al 3640 cv for lawn mower is not charging. No lights?
faulty bosch-al-3640cv-battery-chargerh?
Bosch al3640 cv?
Bosh roteck battery mower shudders/spins but then stops?
Bosch Rotak cuts out after 3 seconds?
Bosch AL 3640 CV charger repair & parts identification?