Team Orion Marathon 1700mAh NiMH 5C Hump Rx Pack with Univ Battery Extended capacity with 15% more capacity than our Marathon 1600 packs Fits the majority of 1/8 and 1/10 scale nitro vehicles Low resistance 20AWG copper wire for high current applications High temperature silicone insulation resists engine heat JR or BEC connectors for RTR or racing receivers