ORIGINAL: dug44
Written in the manual you got with the truck.... The xl-5 is not to be run with lipo batteries.
How hot is the esc getting?
For what reason? LiPo cutoff or input voltage?
Don't tell us not and not give us a why.
It's highly doubtful that his truck is stuttering because of a 2s lipo, because if input voltage was the limiting factor, the ESC would be smoked already.