Due to "lessons learned" regarding NiMh pack problems I was having early on when first messing with bigger servos and single battery packs (and brown outs), I would rather not depend on the voltage telemetry to tell me I should be on the ground, not in the air! Too much of what was happening depended on the load that was on the receiver buss at any given time? E.G. knife edge flight vs. level cruise? And then, this wouldn't happen on the first flight. The problem didn't show intil the second or third. I actually got to the point I could recognize a brown out fast enough where I could neutralize all controls (even if headed straight at the ground!), allowing the receiver enough voltage to continue on again, then moving controls only enough to level the plane and get it on the ground!

This is with the voltage telemetry on an Aurora A9 that was brand new at the time. Cost me a Funtana and a couple of very close calls with another plane to learn waiting for the alarm to go off to tell me I was in trouble was way too late! Actually, it wasn't until after loosing the Funtana that I even figured out I had a voltage issue? When the identical problem occurred with a second plane, that's when what was happening dawned on me (while flying). I neutralized the controls and got it back down on the ground in one piece for the first time.

Back then, if you mentioned you suffered from a brown out, most thought you were off your rocker. It wasn't until later that it started happening often enough with similar setups where it was recognized for what it is most often. The low amperage capacity of the NiMh battery chemistry. -Al