Features 1.The maximum charge current / output current is 1A, but you can change the current by changing the value of the R1 resistor. 2.Precharge regulation is used to recover deep discharge batteries during initial charging and minimize heat dissipation. 3.Constant current / constant voltage / constant temperature operation with thermal regulation to maximize charge rate without danger of overheating. 4.Automatic low-power sleep mode when the input supply voltage is removed. 5.Charge termination, automatic charging, battery temperature sensing, battery overvoltage protection. Specification Item Type:Battery Charger Power Voltage:DC3.8~6V Charging Output Voltage:DC3.6V Maximum Charging/Output Current:1A LED indicator: ''CR''LED is the charge status indicator ''OK'' LED full or constant voltage mode Working Temperature:-40~+85℃ Size:18 x 10.16 x 2.7mm / 0.71 x 0.4 x 0.11in Type:With Pin/Without Pin(Optional) Weight(Optional): 0.9g/0.03oz (With Pin) 0.6g/0.02oz(Without Pin) Application: Car battery charging Children's toy car, toy airplane Solar battery charging Mobile Loudspeaker Electric bicycle charger UPS uninterruptible power supply Independent battery charger Handheld devices Battery backup system Portable industrial equipment Miner's lamp LiFePO4 battery application Package List 1 x Charging Module