just read this again where u oning about aa batterys to a 9.6 pack then it would be like i said above but if ur oning about 9.6 tyco standard packs to a 9.6 ni mh pack then it does a bit not alot tho i do use dickies turbo 9.6v ni mh 1300s bought em on ebay 2 for 10 pounds just last twice as long as a standard bat i get about 20 min in speed gear on the fast traxx where ur lucky to get about 8 min on a standard tyco pack