Originally Posted by airpower
Thermal and slope pilots don't need an indicator
You do when you have a lipo in it. Otherwise how are you going to know when you pass the low voltage and kill the pack?
I have a 4cell nimh 800mah in my weasel and I get about 2-2.5 hours out of a pack. In a bigger bird I have a lipo pack but that needs to run a regulator as well as a lipo alarm and a visible pack indicator under the canopy, but its just a 2m histart bird of time, so I never have it up for more than 20min at the most. Otherwise on my unpowered planes they all run regular packs.