Always turn off the mains power before connecting or disconnecting the battery clamps.
220V–240V AC, 50/60 Hz (Standard European/International mains power) Output Voltage: 12V DC Charging Current: 8 Amps (Effective) / 5 Amps (Arithmetic)
: Designed for intact lead-acid batteries; it will not properly charge batteries with defective cells. Safety & Maintenance
Only after connecting the clamps should you plug the charger into the mains and set the switch to the position. Disconnecting :
As the battery reaches capacity, the needle will slowly drop toward zero. When the needle is near the "0" or "min" mark, the battery is substantially charged. 4. Maintenance and Troubleshooting bosch kl 1208 battery charger manual
This article is a general guide based on the Bosch KL 1208's design. Always refer to the physical labels on your specific unit, as different production years may have slight variations.
: Once charging is complete, follow the sequence in reverse: switch off and unplug the charger first, then remove the clamps from the battery poles. Battery Testing Mode
Connect the of the charger to the positive (+) terminal of the battery.
: Always use in a well-ventilated area, as charging generates explosive gases. Always turn off the mains power before connecting
This usually indicates a loose connection. Power off the unit and re-secure the terminal clamps.
The battery has been left on the charger for too long and is overcharging, or a cell is dead.
Plug the Bosch KL 1208 into a grounded 230V AC wall outlet. Flip the power switch to the "On" position. Step 4: Monitor the Ammeter
No current flow. Poor connection or completely dead battery. Check clamp connections; clean corrosion. Troubleshooting Guide Disconnecting : As the battery reaches capacity, the
As the battery fills, the needle will gradually drop toward zero. When the needle settles at its lowest stable point (near 0-1A), the battery is fully charged. Step 5: Disconnect the Charger
: Charging generates explosive gases; keep sparks, cigarettes, and open flames away from the battery.
While Bosch chargers have evolved, the general principles of LED signaling remain consistent. Refer to your charger's specific panel for exact symbols.
The Bosch KL 1208 features a replaceable automotive blade fuse on the front panel or rear housing. If the clamps accidentally touch while plugged in, this fuse blows instantly to protect the transformer. Replace it only with a fuse of the exact same amperage rating.