Robot Cart Ideas

[Alchemy99]

Hi everyone,
We already have a nice robot cart. Im planning on working on it in the off season, because all it is, is a cart. It has Storage beneath the robot platform, and a cabinet behind the robot (where your hands go, to push) and a shallow storage up front under the robot.

my ideas are to replace one side of beneath the robot with a set of drawers for tools. Mount a UPS with a large battery in the cabinet, with battery chargers and all the robot batteries and a Cord Reel.

So when you bring the cart back to the pit, you plug in from the reel. and that powers the UPS and the battery chargers. when you are away from the pit (power) you can still charge your Drivers-Station, and other things.

The Reason for the cord reel, is to make it clean and efficient to have the extension cord. (hard to forget) and easy to pack.
The Battery Charges will not be running off battery power, they are only on when AC Power is present. This Keeps the batteries with you and ready for Finals.

Sorry if this is long. But my questions are:
Can you replace a UPS's battery with something larger easily?
Does anyone know of any cheap Cord Reels? (like out of a vacuum)
What is the best way to mount a rack of batteries? (I was thinking line them up next to eachother, with velcro strap going over them)