Custom Battery for Xbox???

I was just curious if anyone knew of any battery that you could run xbox of of with out using an adapter or anything else, so if would be portable in parks, schools, that kinda of stuff where you dont have accessibility to electrical outlets.
Thanks

I haven't seen one of these product at all (but then again Australian market is very small compared to other nations) but I'm sure its possible to make one up if you know the voltage and amps the xbox needs. It might cost a lot and might not be safe for the xbox if you make it yourself so consider this option carefully.

Buy a car battery, then go to best buy and purchase the 800 watts power inverter that dirrectly connects to your battery, then you have a portable power source, the 800 watt powerr inverter has 2 electrical sockets, you can use like a extension cord thingy and make it like 12 if u want...

You'll probably have to power a TV too.

Isaw somethin on tv one. It was a special 12- volt thingy that you can carry around with you and it has electrical outlets on it. Sorry I dont know what its called, but I do know its yellow,lol