PiZ-UpTime UPS 2.0 provides UPS for a Raspberry Pi Zero, Pi A and other USB Single Board Computers (SBC) such as Odroid, Asus and other IoT devices. PiZ-UpTime provides space at the bottom of the board to install the battery making it a nice compact form factor UPS. On board ADC measure necessary operating parameters. BATTERIES NOT INCLUDED. Recommend a PKCELL 802030 400mA or an 18650 battery. See pictures.