The KL 1208 can also be used as a battery indicator without being connected to mains power:
This may signify the battery is already fully charged or the unit is not switched on.
The unit will indicate the battery's condition for capacities between . 5. Troubleshooting Common Issues bosch kl 1208 manual top
If a short circuit or reverse connection occurs, the charger will automatically shut down. Turn the unit off, fix the connection, and restart.
Follow the connection steps in reverse: turn off the power, unplug from the mains, and then remove the battery terminals. 3. Key Technical Specifications Specification Compatible Batteries All 12V standard, boat, and small engine batteries Minimum Capacity Test Indicator Range 24 to 66 Ah Operating Temp Maximum 35 °C (95 °F) Efficiency Approximately 85% maximum 4. Using the Battery Test Function The KL 1208 can also be used as
Plug the charger into the mains supply and set the switch to the (I) position. The center red LED should light up to indicate the unit is on. Monitor Progress: Flashing Yellow LED: Indicates charging is in progress.
Set the switch to the position while connected to the battery. Troubleshooting Common Issues If a short circuit or
Connect the RED terminal (+) to the positive battery pole and the BLACK terminal (–) to the negative battery pole.
Charging generates explosive gases. Always charge in a well-ventilated area and do not smoke near the battery.
For standard (non-sealed) batteries, unscrew all screw plugs. Check the fluid level and top up with distilled water if the lead plates are not covered by at least 5 mm of fluid.