When working with metal tools, do not short-circuit the battery.
When charging the battery, an explosive gas mixture is formed, therefore, during charging and servicing the battery, it is forbidden to smoke and use open fire. Charge the battery in a well ventilated area.
In case of accidental splashes of electrolyte on the skin or eyes, immediately, before receiving medical attention, rinse the affected area with plenty of water and then with a 2% solution of baking soda (0.5 teaspoon per glass of water).
Always wash your hands with soap and water after any work on the battery.