ITEM NAME:DC-DC Input 0.9V-5V to 5V Output USB Charger Step Up Power Module V1L7 DC-DC Input 0.9V-5V to 5V Output USB Charger Step Up Power Module V1L7 Input voltage: 0.9V - 5V Output voltage: 5.1 - 5 .2 V Output Current: 500mA (single lithium input) Efficiency: Up to 96% (the higher the input voltage, the higher the efficiency) Switching frequency: 500KHz Output ripple: 30mV (MAX) 20M bandwidth (input 4V output 5.1V 1A) Voltage indication: LED lights with load (input voltage less than 2.7V LED indicator off) Operating Temperature: Industrial (-40 Celsius to + 85 Celsius ) Full load temperature rise: 30 Celsius Quiescent Current: 130uA Load regulation: +/- 1% Voltage regulation: +/- 0.5% Dynamic response speed: 5% 200uS Short circuit protection: None (Please use the lithium battery with protection.) Input Reverse Polarity Protection: None Connection: Welding Input: IN + Postive, IN-Negative Output: USB Output Color: picture color Material: PC + metal Package Contents: 1 x DC-DC 0.9V-5V USB Output Charger Step Up Power Module Only the above package content, other products are not included. Note: Light shooting 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..Output ripple: 30mV (MAX) 20M bandwidth (input 4V output 5.1V 1A). Output: USB Output. Output Current: 500mA (single lithium input). Full load temperature rise: 30 Celsius. Load regulation: +/- 1%. Input Reverse Polarity Protection: None.