As the battery fills, the needle will gradually move back toward zero. Step 4: Disconnection Order Unplug the power cord from the wall outlet first. Disconnect the . Disconnect the Red positive (+) clamp . Reinstall the battery cell caps. Reading the Ammeter Gauge
Correct sequencing is vital to prevent sparks and protect the charger's internal circuitry. images-eu.ssl-images-amazon.com Connecting the Charger Verify Voltage:
Double-check terminal polarity (+ to +, - to -). If correct, the battery may have a shorted cell and must be replaced. Maintenance and Storage To prolong the lifespan of your Bosch KL 1208:
If the unit gets excessively hot, its internal thermal switch may trip. Unplug it and let it cool down before resuming. bosch kl 1208 battery charger manual
Bad connection. Clean corrosion off the battery terminals and re-clamp.
Clean the battery terminals with a wire brush to remove corrosion, ensuring a solid electrical connection. Step 2: Connecting the Charger
Before connecting any device, it is crucial to understand its power distribution limits. The Bosch KL 1208 is engineered with a balance of portable form factor and steady output power: 12 V Effective Charging Current: 12 A Arithmetic Charging Current: 8 A Input Power Supply Voltage: 230 V AC Total Weight: 3.3 kg Minimum Supported Battery Capacity: 5 Ah Maximum Target Battery Capacity: 160 Ah Optimized Testing Range Indicator: 24 to 66 Ah batteries Critical Safety Precautions As the battery fills, the needle will gradually
| Issue | Possible Cause | Corrective Measure | | :--- | :--- | :--- | | & LED is flashing | The charger has identified an internal error. | Unplug the mains plug and reinsert. If the error occurs again, have the charger checked by an authorized Bosch service center. | | Battery is not being charged & Battery contacts are dirty | Dirt prevents a proper electrical connection. | Clean the battery and charger contacts, for example, by inserting and removing the battery several times. | | No LEDs are illuminated. | Mains plug not inserted correctly. | Insert the mains plug completely into the socket outlet. | | No LEDs are illuminated. | Socket outlet, mains cable, or charger defective. | Check the mains voltage at the socket. If the issue persists, have the charger checked by an authorized service center. | | Charger heats up during use. | This is normal when the charger is used continuously or for several cycles without interruption. | This heating is harmless and does not indicate a technical defect. |
The Bosch KL 1208 is rated IP 20. Never expose the unit to rain, snow, or excessive moisture. Step-by-Step Operating Instructions
Plug the charger into a wall outlet. Do not use an extension cord unless absolutely necessary (use 16 AWG minimum if required). Disconnect the Red positive (+) clamp
Connect the clamp of the charger to the positive terminal of the battery.
The output is electronically protected. If a short occurs, the charger will stop outputting power until the issue is cleared. No Indicator Lights:
Before using the Bosch KL 1208, review these essential safety rules from the original manual: