Charging Procedures

When it is necessary to charge battery, following safety precautions must be taken.
1. DO NOT CHARGE battery if indicator is red with clear dot-or-clear or light yellow. Replace battery.
2. Disconnect negative (-) cable from battery.
3. If battery feels hot 52 °C (125 °F), or if violent gassing or spewing of electrolyte through vent holes occur, discontinue charging or reduce charging rate. Charge battery until indicator turns blue with red dot -or- green dot. Tipping or shaking battery may be necessary to make indicator turn blue.

Temperature of battery itself will affect charging rate, and most charging equipment will not charge at a constant rate. For example, if charging starts as 30 amperes and drops off to 10 amperes after 1 hour, average current for that hour is 20 amperes and actual boost charge is 20 ampere-hours. Battery can be fast charged or slow charged with ordinary charges. Either method will restore battery to full charge.