Battery electrolyte is a highly concentrated solution of sulfuric acid, which is extremely harmful and corrosive. Be careful not to get it in your eyes, skin, clothing or painted surfaces of your car.
Explosive gas is released when the battery is being charged from the vehicle charger or alternator. Take precautions to prevent possible injury (see below)
Charge the battery only in a well ventilated area.
Do not allow open flames or smoking in this area.
Charge in a place inaccessible to children.
Keep the battery pack clean. Any signs of corrosion near the battery terminals must be removed using a solution of household soda and warm water. After the battery terminals are dry, coat them with a light coat of grease.