Tested & recommended by Elektor LabsFor straightforward use the software isn’t essential although it does give access to powerful features. The standard capacity of the PiJuice is 1820 mAh is announced to make a power-hungry Raspberry Pi 3B+ last between 4 and 6 hours. Our own tests showed that these figures paint a rosy picture. Depending on the load, we rachived between 1.75 and 3.25 hours, which is still a good result considering the ease of adding capacity simply by using larger batteries (max. current is 1.1 A with the supplied BP7Z battery). You’ll get 2.5 A from a battery rated 3500 mAh or more.
On the PiJuice, two extra I/O lines are fully configurable through the easy to install software. Manual configuration of the PiJuice is done with three pushbuttons and a few DIP switches.