UPS HAT for Raspberry Pi Zero, Uninterruptible Power Supply Module, Plug-and-Play Ba-ttery Backup Board, Real-Time INA219 Ba-ttery Monitor, Supports 3.7 V Lithium Ba-ttery, Power Management Expansion

Overview Give your Rasp-berry Pi Zero project a rock-solid power backbone with the UPS HAT for Raspberry Pi Zeroa purpose-built uninterruptible power supply and battery monitoring board that matches the Pi Zeros tiny form factor. Simply drop the HAT onto the 2 × 3 P header, connect a standard 3.7 V 803040 Li-ion cell, and enjoy seamless, driver-free operation. When external power is present, the high-efficiency charging circuit powers the Pi while safely topping up the ba-ttery. If your mains or USB supply is interrupted, the intelligent path-management IC automatically routes ba-ttery power to the 5 V rail in millisecondspreventing reboots, protecting SD-card data, and ensuring continuous logging or network connectivity.

The integrated INA219 sensor turns this board into a full-featured ba-ttery monitor. Via the I²C bus you can read live voltage, current, power consumption, and accurate state-of-charge estimates. Whether you need low-ba-ttery alerts for a remote weather station or precise energy metrics for a portable AI-camera, the INA219 delivers reliable, high-resolution data. Designed for tight spaces, the UPS HAT maintains the Pi Zeros slim profile while adding critical power-management features: Synchronous boost converter for >90 % efficiency under typical loads. Simultaneous charge-and-load capability for uninterrupted development sessions. GPIO status pins to trigger safe-shutdown scripts or LED indicators. Reverse-polarity and over-discharge protection to safeguard