Not a Leo owner but I regularly run the same tanks non stop for 7 hours for people to line up for a turn to play with and only stopping to change the battery. Sometimes in hot weather the DMD overheats and the tank shuts down and can't be run at all, but they are always OK again once they cool down,there's probably an inbuilt overheat cutout to protect against damage which makes it idiot proof.

I have had a go at friends' leos and they are real nice! On the running time subject, I think a Tiger 1 would probably go further on the same type of battery , Leos seem to have a shorter running time than other tamiyas. I 'think' Leos and Pershings shut down on a higher minimum voltage level than the others.