X9 Series power system includes four types with different propellers, which are applicable to the heavy-lift drone. X9 can be used together with two kinds of propeller, 34.7 inches and 34 inches. The max. thrust for X9 with 34.7-inch propeller is 19.2kg/axis(46V, sea level). For X9 with 34-inch propeller, the max. thrust is 23kg. X9 Plus reaches up to a maximum thrust of 26.5kg paring with 36-inch propeller. And the max. thrust for X9 Max with 41-inch propeller is 29kg. The four types of power systems will meet various customers’ needs.