Rapid charging of a battery by applying alternating pulsed large current without a high temperature

The present invention discloses a method for charging a battery. The method includes the steps of (a) charging the battery by a constant charging current with a first magnitude as a first pulsed charge over a first pulse-period. Then, the method is followed by charging the battery with a constant charging current with a second magnitude, substantially lower than the first magnitude, as a second pulsed charge over a second pulsed-period. The method further includes a step of (b) repeating step (a) over a first charge cycle for rapidly charging the battery to a significant percentage of full capacity. In another preferred embodiment, the method further includes a step of (c) repeating steps (a) and (b) by lowering the first magnitude and the second magnitude of the charge currents and by adjusting the first pulsed-period and the second pulsed-period for charging the battery over a second charging cycle. In yet another preferred embodiment, the method further includes a step (d) of continuously repeating steps (c) by further lowering the first magnitude and the second magnitude of the charge currents and by adjusting the first pulsed-period and the second pulsed-period for charging the battery over subsequent charging cycles to fully charge the battery.