Part Number: Pico-UPS-B UPS Module for Raspberry Pi Pico, Uninterruptible Power Supply, Li-po battery, stackable design Keeps your Pico running while recharging, monitoring battery via I2C, stackable design The Pico-UPS-B is a dedicated UPS (Uninterruptible Power Supply) module designed for Raspberry Pi Pico. It incorporates Li-po battery switching charger with power path management, and voltage/current monitoring chip, allows monitoring the battery operating status via I2C bus. What's more, the male pin header make it possible to "stack" other modules on top. Standard Raspberry Pi Pico header, supports Raspberry Pi Pico series boards