I have a nimh 2300mah reciever pack for my T-maxx and a 1700 mah nicad pack for my ezstart. Are there any smart/quick chargers out there that can handle charging both types of batteries? Does radio shack of these type of chargers????? The chargers that I have now take too dang long to charge up. My ez start battery charger takes 6 hours and the reciever pack charger takes 24 hours.