Use this Coiled D-Tap to DC 5.5 x 2.5mm Barrel Cable to power the C70, a monitor, light, or other accessory using an external D-Tap battery. One end of the coiled cable features a 5.5 x 2.5mm DC barrel right-angle connector and the other end features a male D-Tap right-angle connector. The coiled cable can extend from 16" to 50" in length.