Those robots arent made very well. The were designed for playing hockey, not for combat. When Dave took 4 of them to India for a demo competition one pretty much fell apart while fighting Desvastator with all the batteries falling out after it hit the roof and another died after only one hit from Avengers axe. If I remember right the other two lost after their drive wheels fell off.
http://uk.youtube.com/watch?v=kB4UVOnrwl8