If your not familiar with lipos, the way they work is you get full power the entire time then at the end they die off. In order to properly run a lipo you need the speed control setup for lipo. All speed controls set up for lipo have an automatic cut off that way you dont run the battery all the way down. Reason being, if you run the battery all the way down it is permanently dead. But the good thing about lipos is that they dont just slowly loose charge after sitting for days like nimh nicd batteries and you make a ton more power and ton more run time.
