So I'm getting pretty sick of hand grinding my grain, and the cheap 12v cordless drill I have won't do more than a pound or so before the battery dies. I was looking around online and found this http://www.princessauto.com/pal/en/Drills-And-Drivers/1-2-in-Electric-Impact-Drill/8532269.p at a fantastic price. Just wondering if people think this will be powerful enough to run the mill for 15+lbs per brew day. I am pretty much incompetent when it comes to motors, torque, etc.