The pedal powered generator from Windstream is perfect for emergencies, power failures, remote locations, & off-grid applications. It can be pedaled or cranked by hand to charge 12 volt batteries & run small appliances. The typical average continuous power that can be generated by pedaling the Human Power Generator is up to about 80 watts. The maximum power obtainable through hand cranking typically is about 50 watts. The pedals & optional hand-cranks are interchangeable.