It is quite important to maintain the battery in the car through a standard preventive measure that guarantees quick and efficient starting of the car; safety equipment should also be used. Precautions call for stopping the engine and the accessories should be switched off, and, the negative terminal must be disconnected before repair work is undertaken. The battery generates flammable hydrogen and combining it with oxygen, thus, do not bring sparks, cigarettes or matches closer, and charge the battery in the presence of fresh air. Electrolyte consists of corrosive sulfuric acid and therefore safety glasses have to be used and it is prohibited to touch them with hands or have them on eyes or taste them. Visually review the battery covering and focus on the condition of the positive terminal and the cable clamp; look for signs of corrosion, loose connections, or cracks. In case of corrosion; it is advisable to remove the battery clean it, starting with the ground cable and clean the cable clamps using warm water mixed with baking soda avoiding any of the solution to get into the battery. The battery tray should not show signs of rust or wear and over tightening the hold-down clamp should be avoided on reassemble. The rust can be washed with water and baking soda then any metal component that has rusting should be brought through a zinc formula and then it should be painted. Concerning charging, slow rate charging is recommended for discharged batteries particularly when it is too cold to the extent of winter, using one or two-amp charger will suffice. A higher amperage charger can be used but it should not exceed 1/10 battery AH, and rapid boost charges should only be used in cases of an emergency. There is normally a standby or trickle charger that takes 12 to 16 hours to charge the batteries.