FLOUREON 2 Packs High Capacity Power Replacement 3500mAh 7.2V Ni-MH Battery Pack 6 Cells with Tamiya Connectors for RC Cars Chemistry: Rechargeable Ni-MH (Low Self Discharge) Voltage: 7.2V Capacity: 3500mAh Cells: 2/3AA*6 Discharge plug: Tamiya