There is no power generater of such that I know of for nitro engines. I could be wrong, people come up with stuff all the time these days. Like pyrosian said, just get a receiver pack and a suitable charger. A good 5 cell hump pack similar to this one would last you days.
Heck a 3.00 4 AA pack similar to this one will get you several hours of run time. Use some good alkalines.
Just make sure you have the proper ends to fit the receiver you have.