Can my battery pack provide power for this motor?
Here is a data sheet for an Energizer 2300 mAhr NiMH battery. 

At 13 amps it will not work. A 1C rating is the capacity divided by 1 hour, in this case 2.3 amps. 13 amps is 13/2.3, or 5.6 C, which is way beyond what the battery is intended for. Purely as a SWAG (Scientific Wild-Ass Guess), your battery pack will put out about 4 to 5 volts for about 5 minutes at 13 amps. It will also get extremely hot, and there's a decent chance you'll damage one of the cells if you run it to full discharge.