The PCB monitors the voltage of the Lipo, giving you a series of warnings.
Some are apparently not very accurate, but for just a few bucks and a bit of piece of mind, I say even a cheap one is worth it.
I just switched from a mini 9.6v to a 7.4v 20c lipo and the rof is identical.
"There is another kind of evil which we must fear most, and that is the indifference of good men."
Last edited by Scalpel; April 21st, 2010 at 10:05..