Multi-plateau battery charging method and system and to fully charge the first plateau

摘要

A battery charging method and system, the battery charging method comprising: charging at least one battery at a first voltage for a first time duration; determining state of charge of the batteries at the end of the first time duration; if the batteries are substantially fully charged at the end of the first time duration, charging the batteries at the first voltage for a second time duration, and charging the batteries at a second voltage for a third duration of time; if the batteries are substantially fully depleted at the end of the first time duration, charging the batteries at the first voltage for an alternate second time duration, and charging the batteries at the second voltage for an alternate third duration of time. The battery charging system comprises: a current source; a cutoff voltage controller and timer; at least one battery; and respective ones of voltage and current regulators, which regulate voltages applied to each of the respective ones of the batteries and current supplied to the respective batteries, the cutoff voltage controller and timer controlling the voltages and controlling time durations of the voltages applied to each of the respective ones of the batteries therethrough control of the voltage and current regulators.