Is there a longer lasting replacement for the RX batteries onboard the Revo 3.3? Looking to get more than the 1-2hrs out of it. And also, the traxxas book says that you plug the truck in and when the light turns green it is charged... Well the plug itself says the light will be red when charging and will take 3-4hrs to charge and when the batteries are warm they are charged. Which one is correct? When I got the truck I let them charge for 5-6 hrs and the light stayed red the whole time.