I hope this is a mistake in choice for a battery and not truck related. I bought a ovonic 5500 mah 50 c3s 1p battery that says high discharge. With a full charge we are only getting ten to 15 minutes run time. I would like some advice on the best choices of battery for this truck as far as run time. My 10 yr old grandson is learning the ropes also so we arent trying to break speed records just get more run time between charges. Thanks.