The power that a wind turbine can capture is proportional to the square of the radius of the wind turbine. The square of 0.05 meters = 0.0025 square meters. The radius of a 3Kw wind turbine is approximately 2 meters.
The power of a 10 cm diameter wind turbine is a maximum of 2 watts, which cannot even light a light bulb, let alone charge a battery!