1/8th buggy battery?

[pwrpony]

Looking for people who have and race 1/8th electric buggys? What size batt (mah and volts) are you running. How long of run times(racing) I'm building a ofna jammin with the new Mamba monster ESC and most likly the Feigao 8xl.I need to be able to run a 20 minute main. I have a E-MAXX that i race with a novak 6.5 on two 8000mah lipos and have no problem running 25 minute mains. Any help would be nice, thanks, maxamps team driver rick jenkins