... ,500W,,1KW,2KW,3KW,5KW,10KW.20KW. Wind Turbine Wind Generator,Wind Turbine,Wind generator sytem,wind power system, and so on.===========================================================Specification Rotor diameter ... : SteelBlade material: Fiber GlassSuggested battery capacity: 12V150AH 40PCS.Matched inverter type: PureSine Wave.