Thank you all for the input! I'm going to stick with my Lifep04... Better safe than sorry! My slash has a MM pro esc so I use a 4s 13.2v Lifep04 & it hauls! I plan to buy a new lcg slash 4x4 so I'll have to get a 3s Lifep04 since the VXL-3s can't handle the 4s. Or get another ESC for it and use the VXL-3s in my Tamiya land cruiser... I'd like to use a 3s in that anyways, it needs more wheel speed. :-)