What are the hard case lipo packs? Whats the difference compared to standard lipo? I've noticed the are rated 30C or more. Can this mean more power? Can my efirestorm flux brushless motor & esc handle that kind of power? With the 20c im using rignt now is already making my rc make wheelies all over the place. Its also taking me around 4 hrs to charge using NOVATEC charger. Thats why im looking for a replacement charger.