I think I'm sorted for a charger and as I need both A/C and D/C the Hyperion EOS 0606i 6S 6A max CHARGER AC/DC fits the bill.......but I'm not sure what hump receiver pack to opt for bearing in mind that it's been stated earlier not all receiver pack connectors are standard...so as it's a GST 7.7 monster truck I'm using are there specific brands of receiver battery packs which will fit straight into the reciever of this truck. Tower hobbies have heaps of brands and don't want to buy an incompatible one. Thank you...