Most of my devices are battery powered motion sensors and contact sensors. With IRIS things would start to go squirrely when battery power dropped below around 40%. I don't know if Hubitat has the same problem. However it would be nice if the battery power percentage could be displayed on the device tiles. Now I have to check each one individually which is a pain.
Does Hubitat alert you when a battery is getting low? I have one that is at 24 and so far Hubitat has been silent.