2008 Mercedes SLK-Class Owner's Manual - Page 425

Practical hints Battery Removing the battery Remove the screw on the swivel bar. Remove the swivel bar. Pull out the battery ventilation hose from the battery (depending on battery arrangement in your vehicle model, the ventilation hose is located either on the left or right side of the battery). Take out the battery. Warning! Charging and reinstalling battery Charge battery in accordance with the instructions of the battery charger manufacturer. Reinstall the charged battery. 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. ! The battery, its filler caps and the ventilation hose must always be securely installed when the vehicle is in operation. 424