hey guys i have a traxxas rustler, is there a way to convert the batterys over to a rechargable pack instead of haveing to constantlly buy and replace my batterys on a regular basis? The durecells are 1.5v x 4 of them, thats 6v total, why couldnt I just install a 6v rechargable pack? Im new to the cars and still learning them a bit so any help would be great. Thanks.