The mini server based on the Raspberry Pi 4 board includes a UPS module with two 2500 mAh batteries that can last up to 1.5 hours and a mini OLED screen that displays UPS, IP, CPU, RAM and storage info. It also features a 3D printed case with transparent side panels and even a CPU heatsink with side-mounted fan.
https://www.notebookcheck.net/This-mini-Raspberry-Pi-server-comes-with-built-in-UPS-and-OLED-stats-display.551035.0.html