Method of recharging a sealed lead-acid storage battery

摘要

In the method, a sealed lead-acid battery which has been charged by causing a current to flow thereinto in a charging direction is subjected to a first step in which current is caused to flow into the battery in a direction opposite to the previous charging direction, followed by a second step in which the battery is recharged with constant-voltage, constant-current or semi-constant voltage by causing a current to flow into the battery in the previous charging direction. The method improves recovery of battery capacity of batteries which have remained in an overdischarged state for extended periods and then charged conventionally prior to the application of the present method. The first step may be effected by applying -2.45V to the battery for one minute, +2.45V being applied in the second step.