actually i think im all squared away. the mx3s does suck juice like crazy, at LEAST 1 full set of AAs after an hour or two at the track.
but i took the batt tray out of the radio and im at ABOUT 11.2 and climbing! the battery voltage during charging is around 11.6 now, which will drop to 11.2 once i shut the charger off. when these cells go, i gotta try me some of those AA cells you linked me to. 2300mah and theyre half the price i paid!
thanks for the input all, now i have to rig a second charging input on the radio, but tht should be a fun mod