The UPS HAT (C) is an uninterruptible power supply module for Zero series. It incorporates -po battery switching charger with path management, voltage boost chip, and voltage/current monitor which allows monitoring the battery operating status via I2C bus. Onboard spring pogo pins for connecting with Zero series boards -po battery recharge chip, with dynamic path management, more stable power supply Voltage boost chip, providing regulated 5V power output I2C bus communication, monitoring the battery voltage, current, power, and remaining capacity in real time Multi battery protection circuits: over charge/discharge protection, over current protection, and short circuit protection, more safe and stable Recharging indicator for monitoring the battery operating status Colour:blue Material: PCB Size:65 x 30mm Package Contents: 1 x UPS HAT (C) 1 x 1000mAh -po battery 1 x Screws pack 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.