General

When it is necessary to charge the battery, the following basic rules must be followed:
1. Use a constant voltage power supply with end of charge voltage of 16.0 volts equipped with a voltmeter that is accurate within 1%.
2. If more than one battery is to he charged, the preferred method of charging batteries is to connect them in parallel with each other (+ to +) (- to -).
3. Ambient (surrounding) temperature should be 15 to 38°C (60°F to 100°F). A battery that is extremely cold may not accept current for several hours after starting charger.
4. Charging area should be well ventilated.
5. Do not charge battery if the hydrometer is clear or light yellow. If craning problem exists, replace battery.
6. Do not charge a battery if it seems to be frozen.
7. Batteries with a green dot showing in the hydrometer do not require charging unless they have just been discharged (such as in cranking the vehicle).