2005 Mercedes SLK-Class Owner's Manual - Page 398

Practical hints 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. Reconnecting the battery Switch off all electrical consumers. Connect the positive lead and fasten its cover. Connect the negative lead. i The following procedures must be carried out following any interruption of battery power (e.g. due to reconnection): Set the clock ( page 133). Resynchronize side windows ( page 236). Batteries contain materials that can harm the environment if disposed of improperly. Large 12-volt storage batteries contain lead. Recycling of batteries is the preferred method of disposal. Many states require sellers of batteries to accept old batteries for recycling. ! Never invert the terminal connections! Reinstall the water tray. ! The battery, its filler caps and the vent tube must always be securely installed when the vehicle is in operation. 398