This gear motor rated for 24v and max 250 watts. RPM of this motor is 300~400.  This gear motor is very powerfull. Generally used in E cycle. E bike etc. You can use this motor in other applications too.
Motor Specifications -
No load Current- 2A aprox
Full load Current - 13A aprox
Rated Torque - 0.8 N.m
Rated RPM - 300~400
 
This Motor is best for Very high load applications. Suitable battery is 24v lead acid or lithium ion with at least 7 Ah and power supply is 24v 10A.