The Blue Vigil RS1000 Ground Tether System features a 50m (164ft) tether cable that will power your DJI drone for the entirety of your mission, eliminating the need to land and swap batteries. To extend the range even further, you can purchase the 30m extension cable for your tether system. One end of the cable simply connects to the end of the tether, and the other end connects to the battery replacement module attached to the aircraft.