Originally Posted by Hydro Junkie

Why? I run digital servos in my 1/8 scale hydroplane that are rated at 4.8 volts for the throttle while the rudder servo is dual rated at 4.8 and 6 volts. The load on the rudder servo is several times higher than anything you will ever see on airplanes and it works fine at racing speeds on 4.8 volts. I've run a full weekend, totaling eight five to six minute heats on one NR4J 600mah 4.8 volt pack without recharging the pack. Come to think about it, I charged that pack with a "wall wart" charger a few days prior to that weekend, put it in the boat and never pulled the radio box tape off until I'd been home for three days