5 year warranty. In 6 foot tower sections with hardware, guy anchors, guy wires, and gin-pole to erect it. Whisper has only 3 moving parts, with no brushes in alternator. The blade rotates the outer shell of bar magnets around a stationary 3 phase AC winding, creating 3 phase AC, rectified to DC in the control box. These start to charge in 7-8 mph wind, reach maximum power at 28 mph.
Blades are injection molded and fiber reinforced.
Three blade propellers are quietest and better balanced than two blades. Two year warranty. Digital meters show battery volts and amp measurements. 7 foot diameter molded fiber prop. Three blade 10 ft diameter molded fiber prop.