Best generator motor. Very easily generate power. Even you can rotate it by hand it will generate power and can glow a led easily. suitable for wind energy in air turbine, water energy, hand crank energy etc.
DC Generator Motor 3-24v
Generating voltage - 3-24v aprox depending upon speed
Generating current - 2A max
Generating power - 48 watts max
Shaft dia - 3.17 mm
Capacitor inbuilt to rectify the output current.
RPM - 100-3000 rpm.
As fast you can rotate this it will generate more and more power.
use a pulley or gear system to increase the speed.