After warning that the power supply is not looping (I taped my Raspberry Pi's micro USB PWR connector), PiZ works great. It supplies power through the pins of the GPIO connector. It works great even when installed with an Ozzmaker BerryIMU GPS device with the same GPIO connector. No battery is included, so you must use your own 3.7V lithium polymer battery. The battery's screw terminals mean you'll need wire strippers if your battery already has a JST power connector that needs to be removed.
WZRELB Power Inverter 3000W: Pure Sine Wave 12V to 120V DC to AC Converter for Efficient Power Conversion
9 Review
Redundant UPS APC by Schneider Electric Back-UPS BE850G2-RS
43 Review
π MEAN WELL RSP-500-24 AC-DC Switching Enclosed Power Supply: Efficient and Reliable Performance
7 Review
High-Efficiency Dynex 400-Watt ATX CPU Power Supply for Enhanced Performance
9 Review