2006 Mercedes SL-Class Owner's Manual - Page 418

Practical hints Batteries Removing the starter battery Remove the screws securing the starter battery in the engine compartment. Pull out the battery ventilation tube from the battery. Depending on battery arrangement in your vehicle model, the ventilation tube is located either on the left or right side of the battery. Lift the retaining bracket. Remove the battery. Charging and reinstalling batteries Warning! Charge batteries in accordance with the instructions of the battery charger manufacturer. Reinstall the charged batteries. Follow the previously described steps in reverse order. G Never charge a battery while still installed in the vehicle unless the accessory battery charge unit approved by Mercedes-Benz is being used. Gases may escape during charging and cause explosions that may result in paint damage, corrosion or personal injury. An accessory battery charge unit specially adapted for Mercedes-Benz vehicles and tested and approved by Mercedes-Benz is available, permitting the charging of the battery in its installed position. Contact an authorized Mercedes-Benz Center for information and availability. Charge battery in accordance with the separate instructions for the accessory battery charger. 417