Hi, I originally thought of this when I constructed the STS-Pi - can you recommend a power source for it - or even sell one! :-) I’ve since been experimenting with power banks however I’m concerned that they may damage the Pi depending which one I use. For example, I bought a TP Link Power Bank which gives a 10400mAh output at 5v. This works perfectly with my STS-Pi (which is a RPi 2, however, if I power a Pi Zero W (with a Blinkt attached) with this, the Pi makes a rather worrying noise a bit like a de-tuned fm radio! I’ve also tried a smaller Belkin 4000mAh power pack but I find the Pi Zero W reboots for no reason when powered with it.
I’m concerned that these packs are either supplying too much or too little voltage…
(In either case, the packs are fully charged…)