Thank you for viewing. These batteries have been broken in using an ISDT C4 Ant-Matter charger, etc. After initial conditioning, they have been paired based on internal resistance, capacity, and discharge curve, and then broken in with high current. These batteries have low internal resistance and are less prone to voltage sag. Ready to use immediately for racing. Instant purchase OK. Please comment if you want to change the number of batteries. Thank you. #Tamiya #NeoChamp #Mini4WD #BrokenIn #Conditioned #Discharge #HighAmperage #114 #PulseCharging