The Power Management HAT is a smart power bank designed for Raspberry Pi. With the embedded Arduino MCU and RTC, the HAT features auto power management function which allows the Pi to work more power-efficient and more safely.
If you're looking for some convenient utilities for yor long-term working Raspberry Pi, such as longer battery life, or auto power on-off control, this Power Management HAT would be the ideal choice.
By auto starting up on specified period, and auto shutdown at other time, the HAT can greatly save the battery life. It will monitors the operating voltage/current status of the Raspberry Pi in real time, and can be configured to shut the Pi down according to the operating status. What's more, it comes with a handy power switch for easy on or off (safely shutdown the Pi by software), to avoid data loss caused by unplugging the power supply.