Maintaining batteries can be hazardous, as they contain corrosive sulfuric acid and produce hydrogen gas. Exposure to either of these can cause severe burns or other health issues, while leaks of battery acid can damage equipment and explosions can lead to shrapnel injuries. It is important to take the necessary precautions when handling batteries. Wear protective gear, such as gloves, goggles, and a face mask, to protect yourself from acid and gas. Make sure to store them in an appropriate place.