Well first off let me say that ive got some batteries from 98 and if you look closely at them they are pretty much 2400's i use them for practice and they have great punch. I have a yokomo mr4tc and i run the p2k motor and i have madd run time i run 3000 peak and orion packs i love them great punch they are sanyo cells i have panasonic cell 3000's also and i dont like those but 3000's are the way to go