Uninterruptible power supply (UPS) module for Raspberry Pi, with onboard switch-type lithium battery charging chip with path management, boost chip and voltage and current monitoring chip. Supports simultaneous charging and discharging, can provide stable 5V voltage output, and can monitor battery voltage, current, power and other parameters through the I2C interface. Supports battery power icon display, easy to check battery status. Adopts spring pin interface design, suitable for Raspberry Pi series motherboards Onboard Type-C bidirectional fast charging interface, supports multiple charging input and output protocols such as PD3.0, and supports up to 40W power Onboard dedicated battery power meter chip, supports reading battery voltage, current, power, remaining power and other parameters Can communicate through I2C interface, read Type-C input and output, battery status and other information, and detect module working status in real time The module adopts four 21700 lithium battery design, with larger capacity and longer battery life The board high-power buck chip can provide stable 5V 6A output Onboard MCU chip management, supports power-on detection and startup function Support battery power icon display, easy to check module status Output voltage: 5V Control interface: I2C Charging power supply: bidirectional input/output fast charging protocol, maximum support 40W power Output power: 5V 6A Battery specification: 21700 rechargeable battery 3.6V Current capacity: 5000mAh (nominal) Product size: 56mm x 88mm Through hole diameter: 3.0mm Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:Blue Material:PCB Package Contents: 1* For Raspberry Pi 4B/3B+ UPS Module Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement a