http://www.relay-tester.com/resonant-system/ Resonant System factory Overview Battery Charge and Discharge Tester is a multi-functions equipment which is integrated into charge, discharge, regeneration and on line monitoring. It can reduce the enterprise cost and the maintenance staff labor intensity, for batteries and UPS power supply maintenance to provide comprehensive scientific testing means. Main Functions and Features 鈼廡he product is utilized color touch screen. It can be operated via finger or the touch pen with convenience and flexibility 鈼廜ver Voltage, Over- current and over- heating protection. Charging Function锛?/strong