Thanks for the input! I have checked all the pi's on a PC, and they do not appear. There's only the activity LED on the P0W, and I think I saw it light on the first Pi (that booted), but never on Pi 2 and 3. I just checked the voltage with the battery at the GPIO pins, 5.07V and 3.29V, so it should ...

Hey everybody! I'm just posting to vent a bit of frustration and get some advice. I have so far managed to burn out 3 Pi zero Ws and only seen a boot screen once. I bought a starter kit from Adafruit, and have been using that power supply, along with a RadioShack portable USB battery that I intend t...