I recently purchased a used machine that tosses baseballs in the air for teaching kids how to hit. The machine is a Wheeler Dealer made by Athonic Sports and runs off of (2) Power Sonic 12v 5ah batteries that require frequent charging. The charger is a Jameco 24v 400 mA. I know very, very little about electronics but what I would like to do if possible is to eliminate the batteries all together and be able to plug this machine directly into an extension cord. It does have a circuit board and has 2 controls, 1 that controls the height of the toss and 1 that controls the time between tosses. Any suggestions?