I'm working on a data logging temperature and humidity project and been thinking about powering everything up. I'll use a 5V(1A) power adaptor but since I'm going to put in a place that suffers from frequent power outages I thought that maybe I could use de usb port for a cheap 5000 mAh powerbank. Is it possible to keep it plugged into the electricity AND on the powerbank? I don't know if the Arduino UNO will give any priority to the power adaptor or if I'm going to fry everything up the moment I plug the powerbank.
Also, I've read somewhere in this forum that maybe powerbanks understand the low current draw from the Arduino board as leakage and just turn itself off. Does anybody here ever used powerbanks with an Arduino to confirm this info?