After a few modifications my Leopard is now capable of running on the same LiPo battery that I use for the UNIMOG. I did some research on the WEB before using a LiPo in the Leopard. The conroller should be fine and the cut-off should happen long before the battery is depleted, so it should be safe for both tank and battery.
I did a brief run after I made the needed mods. The tank runs much better than it did on that old 1400mAh NiCd battery.
One thing though: I'll have to figure out a new way of mounting the camera. There isn't room for the current camera mount below the commander's hatch.
A few pictures: