This is permanent magnet alternator that is applied to the tractor, small wind turbine, and boat etc.
 
The size is very small, only 54 X 78mm

It has high efficiency, very low noisy, and long working life.  This alternator is drived by pulley. It's bottom has three screw holes, that's very easy to install.

Specification: 

Working Speed: 500-10000rpm

Output Power: 15-100W

Output Voltage: 12- 48V

Start Torque: 500g/cm

If you have anything question, please contact us.