Both trucks are using the same batteries. Amazon link here:

HOOVO 7.4V 80C 5200mAh 2S Lipo:
https://a.co/d/d3pRjQ2


Both trucks are using an EC5 adapter lead. Amazon links here:

Traxxas to EC5 plugs:
https://a.co/d/6GEkP5T

EC3 to EC5 plugs:
https://a.co/d/6wyhnCO