Item Type: UPS Power DIY Board_x000D_ Charging Voltage: DC 4.5V-8V (recommended DC 5V)_x000D_ Charging Current: 0-1A_x000D_ Full Charge Voltage: 4.2V 2%_x000D_ LED Indicator: _x000D_ "OK" LED is fully charged or battery failure status indicator;_x000D_ "CR" LED indicator is the charging status indicator_x000D_ (Boost) Discharge Current: 0-2A_x000D_ (Boost Type) Discharge Quiescent Current: 450uA_x000D_ (Enhanced) Discharge Conversion Efficiency: 78%-90%_x000D_ (Boost) Output Current: 0-1.2A (5V), 0-1A (6V), 0-0.66A (9V), 0-0.5A (12V)_x000D_ Working Environment Temperature: -40 to +85_x000D_ Storage temperature -65 to +125_x000D_ Excluding Pin Size: Approx. 23 x 15.4 x 5.7mm / 0.9 x 0.6 x 0.2in 1Used for battery-powered equipment, not only a charger, but also has a step-up function 2The product come with high conversion efficiency, saving both time and labor 3This important DC converter is used for UPS power DIY equipment, very practical 4Working environment temperature is from -40 to +85, very wide and convenient 5Storage temperature is from -65 to +125, you can store with confidence1 x UPS Power DIY Board