Before performing maintenance or recharging the battery, turn off all accessories and stop the engine.
To disconnect the battery, remove the negative cable first. Install it last when connecting the battery.
Be sure to remove the caps before recharging the battery.
If the battery quickly discharges because, for example, the lights were left on too long with the engine off, slow-charge it as required by battery size and charger capacity.
If the battery gradually discharges because of high electric load while the vehicle is being used, recharge it as required by battery size and charger capacity.