The Waveshare UPS HAT (E) offers an inexpensive, easy way to add battery backup to a Raspberry Pi project. It’s compatible with Raspberry Pi 5, 4B and 3B+ boards and accepts four 21700 lithium-ion batteries (not included). Just like a traditional UPS from a company like APC or CyberPower, the UPS HAT (E) springs into […] The post Waveshare UPS HAT easily adds battery backup to a Raspberry Pi appeared first on Liliputing.