Battery Power Requirements

[excel2474]

I'm working on a small robotics project, and since I'm also I member of the FIRST community, I thought I would see what you guys have to say.

Here's the situation. I have a small robot 16"x16"x24" (small compared to FRC) and weighs about 45 lbs. I'm using mecanum wheels for the drive and 4 bane bot rs550 motors. The robot must also be able to throw a ball, so I'm using 2 more rs550 motors for a baseball pitcher style throwing wheels, and one more rs550 for the ball feeding mecanism.

My question is: Will a 12v lead-acid battery with 7.2 amp-h be sufficient for this application? I will be able to change the battery every few minutes or so just like in FIRST, so I just need to know if it will be enough power to get the job done.

Thanks for your help! Below may be a couple useful links regarding the battery and motors.


Battery Link:
http://www.radioshack.com/product/in...4AAA&gclsrc=ds

Motor Link:
http://banebots.com/p/M5-RS550-12