Well, to let you know, on my savage after a nose down landing at the track I proceeded to put a nice dent in my 4s 8Ah TrueRc lipo from the small delrin stop in the front. I have since put a piece of angle aluminum the width of the battery where the front battery stop is to distribute the shock of nose down landings across the front of the battery(instead of focused on one small point). I also put some foam on the front of the battery to help with crashes. I just hope I didn't ruin my battery(but it is a perfect reason to move up to 5 or 6s!)

Hope this helps!

Bye