Originally Posted by
gigaplex
ESC BEC voltages tend to range between 6V and 7.4V. That's not just a nominal, that's a peak. Servos rate their operating voltage range, if they specify up to 7.4V they're not rated for 8.4V. The servos I tend to use, SRT 6012, have an operating voltage range between 6V and 7.4V. And not all servos are rated for 7.4V in the first place.
If your electronics can't handle straight lipo, put them in the garbage where they belong.
7.4 and 8.4 is the same thing. Every RC I have, has 8.4 to the servos. And has been since 2008.