Use the batteries that have higher voltage! The 3300 do not have higher voltages than the 3000. They have more runtime and most probably less voltage
Don't listen to this. The 3000's don't have higher voltage than the 3300's. If 3000's were so good they wouldn't have come out with 3300's. the 3300's have just as high voltage better IR and longer run time. and also 3300's don't drop off through out the race.
Promatch racing makes awsome batteries you can get them from
Or you can get smc's they make good batteries too. Don't waste your time or money on 3000's.