I have an SC10 4WD that I am getting together and have a battery question-

In addition to the 4WD I have an SC10 and an SC10B. I would like to be able to run one type/spec of battery for all three. I have been running 5000 30c in the 2WD vehicles. It is time for new batts for both those so it would be good if I could interchange batts among all three. Does the 4WD need more battery Mah and C than the other two? Not racing at this point, just bashing around, on track and elsewhere.

Comments appreciated, thanks.