Feature: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 ChargerPower Voltage:DC3.8~6VCharging Output Voltage:DC3.6VMaximum Charging/Output Current:1ALED indicator:''CR''LED is the charge status indicator''OK'' LED full or constant voltage modeWorking Temperature:-40~+85Size:18 x 10.16 x 2.7mm / 0.71 x 0.4 x 0.11inType:With Pin/Without Pin(Optional)Weight(Optional):0.9g/0.03oz (With Pin)0.6g/0.02oz(Without Pin)Application:Car battery chargingChildren's toy car, toy airplaneSolar battery chargingMobile LoudspeakerElectric bicycle chargerUPS uninterruptible power supplyIndependent battery chargerHandheld devicesBattery backup systemPortable industrial equipmentMiner's lampLiFePO4 battery applicationPackage List:1 x Charging Module