Portability is always nice when it comes to maker projects, but when you’re dealing with something that needs a continuous power supply, it’s not always possible. If you’re working with Raspberry Pi, however, an uninterruptible power supply (UPS) could solve that problem.
The PiVoyager is the latest in UPS technology that works with standard Li-Ion or LiPo batteries. It features a programmable watchdog, automatic restart, and even a real-time calendar. While it’s designed as a pHAT for the Pi Zero, it also works on any Pi with a 40 pin header.
When its plugged into a USB power source, it will power the Raspberry Pi and charge the battery as well. When disconnected, it automatically switches to the battery and powers the Pi at 5V using a boost converter.
The Real-Time Calendar feature is especially useful as it stores the current date and time, even when the Pi is powered down. The included software also allows you to control and monitor the UPS with a variety of options you can check out here.