Dynamite Speedpack 7.2V 2400mAh 6-Cell Stick Battery Pack with Tamiya ConnectorSPECIFICATIONSCapacity: 2400mAhNumber of Cells in Series: 6Rated Voltage: 7.2VMin. Discharge Voltage: 5.4VMaximum Recommended Charge Current: 4 ampsCell Size: Sub-C