Good for over 50+mph right out of the box!Made using only the highest quality 1600mah cells, for the lowest resistance and highest voltage for MORE SPEED! Can be ran in parallel for double run time.Series and parallel connection sold separately.7.2V 1600mAh NiMH Battery PacksSpecifications:Build with 6 pcs 2/3A High Drain BatteryHigh Capacity High Power Nickel Metal Hydride Battery Pack for RC cars.NiMH technology enables convenient charging at any time. No cell memory effect. No need to fully discharge before recharging.Uniquelydesigned& manufacturedfor high RC Racing performance.Fits with popular standard 7.2V RC cars like Traxxas, LOSI, Associated, HPI, Tamiya, Kyosho, etc.6 months warranty.Technical SpecificationsStandard Dimension90 x 35 x 18mmWeight5.5ozCapacity1600 mAhVoltage7.2VConnectorTraxxas Connector, 100mm 16AWG wire