If the 12V battery discharges, start the vehicle for at least 60 minutes, either driving or idling. Alternatively, you may connect a fully automatic regulated charger to the engine compartment front jumper posts or to the 12V battery.

When recharging the 12V battery, take the following precautions:

• Remove the 12V battery from the vehicle and place it in an area with good ventilation.

• Do not allow cigarettes, sparks, or flame near the 12V battery.

• Watch the 12V battery while it charges, and stop or reduce the charging rate in the following cases:

  1. The 12V battery cells begin boiling violently.

  2. The electrolyte temperature of any cell is above 120 °F (49 °C).

• Wear eye protection when you check the 12V battery while it is charging.

• Before performing maintenance or recharging the 12V battery, turn off all accessories and stop the vehicle.

• Disconnect the 12V battery charger in the following order:

  1. Turn off the 12V battery charger main switch.

  2. Unhook the negative clamp from the negative battery terminal.

  3. Unhook the positive clamp from the positive battery terminal.

• The negative battery cable must be removed first and installed last when the 12V battery is disconnected.