After removing the revo from the box and giving it a once over ,tightened a few screws (watch the rocker arms) installed the antenna and juiced the single pack that came with the truck. Took about 55min on my 720i set on 1.5 amps. Now off to run the steer servo I must say surprised me it had good power and fairly quick response no need for 2. This things pretty dang fast on just one nimh pack it even popped the front end up. I only ran about 5 minutes and had to stop for the day but all I can say it great job traxxas !!