Battery Testing Equipment provides meaningful data on battery health without significant expense or reduction in remaining battery capacity. Among the commonly used equipment are battery analyzers, impedance testers, and charger simulators. Parameters for battery testing include - -Charge levels available -Voltage output measurement -Level of charging capacity available -Impedance -Resistance Battery testing equipment is typically designed for on-line ac impedance and dc terminal voltage measurement of secondary batteries. The statistic scope in this report is mainly the stationary type, not referring to the handheld type.