A: Yes. The transformer and charging circuit generate heat. Warm to the touch is fine; hot enough to burn is not.
Before using the Bosch KL 1208 battery charger, please read and understand the following safety precautions: bosch kl 1208 battery charger manual
: Do not use in moist rooms, on heated bases, or in temperatures exceeding 35°C (95°F). A: Yes
: It is specifically designed to handle and protect extremely deeply discharged batteries. Broader Context on heated bases