... function, in the battery under voltage, over voltage, over current,over temperature, short-circuit, reverse connect etc an abnormal circumstance ... pollution, and ensure the safety use. 5. Wide voltage input range, adapt to regional strong. 6. Satisfy CE certification requirements, ... 5VDC73.5VDC73.5VDC73.5VMax Output Current(A)1.8A±0.1A2.5A±0.1A2.9A±0.1A3.5A±0.1ASwitching Current440mA±60mA540mA± ...