Broken-in Neo Champ NEO CHAMP AA Rechargeable Batteries - 4 pieces These batteries have been broken in and conditioned. They have low internal resistance and are less prone to voltage drop. Since motors and batteries account for a large part of the speed, those who consistently win pay close attention to their batteries. This can prevent losing due to battery differences. Especially in the tune class, where tricks don't work, a difference in batteries, just like with motors, can make it impossible to compete with regular prize winners. I hope many people can be successful and that the mini 4WD population will grow, and I want to offer these at a reasonable price. *Technical courses require adjustments to gimmicks and brakes, and are for intermediate and advanced users. - Type: AA batteries - Quantity: 4 - Brand: Tamiya - Battery Type: Tamiya Official Rechargeable Batteries #Mini4WD #HighOutput #TAMIYA #NeoChamp #NEO #CHAMP #BreakIn #BREAKIN #JAPANCUP #StockClass #MAX #Tune #Dash #TuneMotor #DashMotor #TuneClass