Feature: 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