Disconnection of the battery should be done only with great care since it might require re-learning on how to use the system properly and also should the audio system contain an anti-theft mechanism, the right activation code must be known beforehand. The battery has a regular preventative maintenance program that will guarantee consistent starts and safety of handling requires the right equipment. Safety measures involve switching off the engine and other accessories and disconnection of the negative terminal first. The battery produces flammable hydrogen gas, and thus, do not use sparks, smoke, or fires, and never charge where there is not good ventilation. Electrolyte is poisonous and corrosive; protective equipment is needed, and children should be avoided. Check the battery, look at any damage and corrosion and lose connections and in case of corrosion, take out the battery and clean it, beginning with the ground cable. Wipe down clean and clamp with a baking soda solution and do not allow any solution to get into the battery and also wear protective clothes when doing so. Make sure that battery tray is in place and hold-down clamps are in place but not strained. More resources can be used in jump-starting and detailed battery examinations. It is possible to clean corrosion using a solution of baking soda, and use a zinc-based primer on any damaged metal. During the charging process, watch out of the hydrogen gas production and no flames, with the use of eye protection. Discharged batteries should be charged at slow rate, especially during wintertime, when discharging a battery, a one or two-amp charger is the best to use, whereas higher amperage chargers must be used with care. The instructions on the charger will normally give the charging times that the charger will require and trickle chargers will require a 12-16 hours to fully charge a battery.