Originally posted by JetSD
I'm a bit leery about running 6 volts. I've heard the unless you use a regulator you'll get glitches until the battery is depleted a little. Plus, doesn't the battery drain faster?
Yes and yes.
The glitching isn't much of an issue if you're using analog servos.
Digitals *really* don't like being run off the 7+ volts that a freshly-peak-charged 5-cell pack puts out... a regulator is cheap insurance against a servo burning itself up.
When compared with a 4-cell pack of identical capacity, your max battery life will decrease by approx. 20%.