2003 Mercedes SLK-Class Owner's Manual - Page 178

Operation Engine compartment Battery Your vehicle's battery is located in the engine compartment. The battery should always be sufficiently charged in order to achieve its rated service life. If you use your vehicle mostly for short distance trips, you will need to have the battery charge checked more frequently. When replacing the battery, always use batteries approved by Mercedes-Benz. If you do not intend to operate your vehicle for an extended period of time, consult an authorized Mercedes-Benz Center about steps you need to observe. Observe all safety instructions and precautions when handling automotive batteries. Risk of explosion Keep flames or sparks away from battery. Do not smoke. Battery acid is caustic. Do not allow it to come into contact with skin, eyes or clothing. In case it does, immediately flush affected area with clear water and seek medical help if necessary. Wear eye protection. Keep children away. Follow the instructions in this Operator's Manual. Batteries contain materials that can harm the environment if disposed of improperly. Recycling of batteries is the preferred method of disposal. Many states require sellers of batteries to accept old batteries for recycling. 178