: For standard (non-maintenance-free) batteries, unscrew all screw plugs to allow gases to escape.
If the charger fails to operate correctly, check these common fault scenarios: Needle Stays at Zero Bosch Kl 1208 User 39-s Manual
A necessary and well-executed manual that serves the professional electrician well. : For standard (non-maintenance-free) batteries
Always charge batteries in a well-ventilated room, garage, or outdoor space. Bosch Kl 1208 User 39-s Manual
Connect the clamp to the negative terminal of the battery.
The red LED in the center should light up to confirm a successful power connection. 2. Charging Process