Patent ID: 9337684
Filing Date: 2016-05-10
CPC Classification: H02J

Claim Text:
1. A method of charging a lead-acid battery utilizing a charging device comprising: providing the lead-acid battery with a first substantially constant current of approximately 30.0 amps; determining if a voltage of the lead-acid battery reaches approximately 15.6 volts; terminating application of the first current if the lead-acid battery is not less than 15.6 volts, and not later than approximately 3.0 hours have elapsed; providing the lead-acid battery with a first substantially constant voltage of approximately 14.8 volts at an initial current of no more than approximately 30.0 amps; determining if the current of the lead-acid battery is greater than approximately 1.0 amps; terminating application of the first voltage if the current of the lead-acid battery is not greater than 1.0 amps, and not later than approximately 4.0 hours have elapsed; providing the lead-acid battery with a second substantially constant current of approximately 3.0 amps; determining if the voltage of the lead-acid battery reaches approximately 17.5 volts; terminating application of the second current if the lead-acid battery is not less than 17.5 volts, and not later than approximately 1.0 hours have elapsed; and providing the lead-acid battery with a second substantially constant voltage of approximately 13.8 volts at a current of no more than approximately 1.0 amps.