Hey Brad,
I'm not sure what you're telling us.... Are you talking about a Receiver power pack? But then you say "hump pack" which makes me think of a 7-cell NiMh battery pack for an electric RC vehicle. But then you say you're getting HOURS of run time.....which is NEVER going to happen with a 1600mah NiMh powering an electric RC....but ten minutes sounds right for THAT. So, I'm a little confused.
Can you elaborate please? And what's this Traxxas charger you mention?