Hi guys, completely new here. I'm putting a train body on a traxxas chassis, (perhaps the most affordable 2WD Slash). I'd like to dial down the speed from 100% to 1-2%, for extended battery life and for a nice slow train.

How long do you think the batteries will last at 1-2% speed?
How do you do it? Do you need a particular transmitter (hand controller)?

Thanks!