Feature:1. Reliable Uses: Enables automatic power off, the module will save power and worry as well as extending battery life.2. For Batteries: Can be flexibly applied for the charging of 3.7120V lithium batteries, very efficient and reliable.3. Simple Wiring: High power terminal has large wiring capacity, which can easily adapt to various wiring requirements.4. Great Control: Adopting single chip microcomputer for controlling, ensuring effective, easy and accurate processing.5. Indicate Light: When the voltage is lower than the starting voltage, the indicator light is on, the battery is being charged, and when the voltage is higher than the stop voltage, the indicator light is off, and the battery charging stops.Specification:Item Type: Charging Control ModuleModel: XH-M602Input Voltage: AC220VDisplay Accuracy: 0.1VControl Accuracy N: 0.1VOutput Type: Output SwitchVoltage Error: +/-0.1VAdaptation Range: For 3.7-120V lithium battery and storage battery. Product Size: Approx. 86 x 58 x 24mm / 3.39 x 2.28 x 0.94in.Package List:1 x Charging Control ModuleNote:If it does not display when connected, then you may not connect the battery. It connect the battery to work normally, and the motherboard will not work if it cannot detect the battery. Battery charging usually uses slow charging, that is, the charging voltage is about 1.2 times the rated voltage, and the charging current is about 110 of the rated capacity of the battery. For example, the charging voltage of a 12V50AH battery is 14.4 volts, and the charging current is 5A.