Abstract
The recovery system of a degraded lead-acid battery was developed using an on-off constant current charge and short-large discharge pulse. The multifunctional system was equipped with the recovery of a degraded battery, constant current charge or constant voltage charge, and constant discharge current. The system performed monitoring voltage and current in operation, change of control program, remote operation with personal computer connected by a serial cable. A degradation lead acid battery of electricity storage systems will allow recovery without human operation at the installation location. The system recovered a commuting car battery to the same condition as new. The used engine start battery for recovery is suitable for under 5 years from manufacturing time without over discharge, and used deep cycle battery for recovery is recommended for under 8 years from manufacturing time.
