... protection function, in the battery under voltage, over voltage, over current,over temperature, short-circuit, reverse connect etc an abnormal circumstance ... VoltageDC73.5VDC73.5VDC73.5VDC73.5VMax Output Current(A)1.8A±0.1A2.5A±0.1A2.9A±0.1A3.5A±0.1ASwitching Current440mA±60mA540mA±60mA620mA±60mA650mA ...