Input voltage: 09V - 5VOutput voltage: 51 - 5 .2 VOutput Current: 500mA (single lithium input)Efficiency: Up to 96% (the higher the input voltage, the higher the efficiency)Switching frequency: 500KHzOutput ripple: 30mV (MAX) 20M bandwidth (input 4V output 51V 1A)Voltage indication: LED lights with load (input voltage less than 27V LED indicator off)Operating Temperature: Industrial (-40 Celsius to + 85 Celsius )Full load temperature rise: 30 CelsiusQuiescent Current: 130uALoad regulation: +/- 1%Voltage regulation: +/- 05%Dynamic response speed: 5% 200uSShort circuit protection: None (Please use the lithium battery with protection.)Input Reverse Polarity Protection: NoneConnection: WeldingInput: IN + Postive, IN-NegativeOutput: USB OutputColor: picture colorMaterial: PC + metalPackage Contents: 1 x DC-DC 09V-5V USB Output Charger Step Up ModuleOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.