7.4 volt 4000mAh Li-Poly TX Pack for the Spektrum DX7S and DX8
This 2S 4000mAh lithium polymer battery pack is a perfect fit for the Spektrum DX7s and DX8 transmitters, and offers twice as much runtime as the stock 2000mAh battery! This lipo also features an internal cell balancer and a built-in safety current circuit to prevent the battery from being overcharged and causing damage to both the battery and your radio. * Dimensions: 68mm x 52mm x 19mm