[MetalMan]

Yes. The voltage regulator on the 9920 (BEC) has to burn off the extra voltage to bring it down to 6V (or whatever voltage it is at). Then, the more amps that are pulled, the more amps that are put into heat. The equation for how many watts are into heat is (Vin-Vout) x amps. So, 16 cells are about 19.2v, and the BEC voltage is about 6v. That's a voltage difference of 13.2v. A high torque servo can easily pull 1amp continuous, and 2amp peaks (or even more). That would be 19.2watts continuous, and that's a lot of heat even for a chip with a heatsink! But, the BEC chip on the Warriors doesn't touch a heatsink, so it is best to keep the voltage low.