Features 1、POWER SWITCHING: Lithium battery boost charging module, with UPS circuit, can realize dual power supply switching between power supply and battery without delay. 2、UPS POWER SUPPLY: UPS uninterruptible power supply function, when the power supply has power, the power supply directly supplies the load through the boost circuit. 3、MODULE INTERFACE: The module is equipped with two 18650 battery sockets, a universal Micro USB charging port, and direct DC5V input to charge the lithium battery. 4、LED INDICATOR: Equipped with dual color LED to indicate the charging state, the green light is always on when it is fully charged, and the charging stops automatically. 5、GOOD PROTECTION: Once the power is cut off, the battery path will start automatically, and power will be restored to the load after power on, with short circuit, overvoltage, undervoltage protection. Specification Item Type: Battery Boost Charging Module Model: LX 2BUPS Material: PCB Switch Power Supply Structure: BOST Boost Battery Type: 3.7V lithium battery (4.2V fully charged) Load: Output positive and negative pole connected load, normal load<5W, transient<8W Package List 1 x Battery Boost Charging Module