I bought *almost every* Raspberry PI UPS < $50 on the market and none are good for our little 5V robotics!
We need a reliable 24/7 UPS capable of charging during use that can filter out bad contact at the charging cable.
A voltage / state of charge I2C sensor is a mandatory feature.
The result is that majority burn/fry and/or reboot the raspberry PI.
Near all robots prototype on https://www.vigibot.com
use the only one working, the Geekworm UPS PRO v1.1 RED PCB board. it need a retro engineering work on PCB to get a reliable operation (you just have to remove few components, no bridge!). But it is no longer manufactured!
So we did a kickstarter to produce this reliable & cheap power supply board for our small Raspberry PI robots. it must be cheap < $30.
The project is funded and there is still a week before the end : http://kck.st/2QuEvt3
Make your own raspberry robot, control it over the internet in FPV mode with super low latency and securely share access on it to your friends with Vigibot.com! You are welcome to test our robots now!
https://www.vigibot.com (100% free, no ads)