2s LiPos work well on the EZB. Anything from 6v to 17v is supported by the EZB.

How long do you think the battery would last say I use a 11v 6a battery- also is this board possible to go to a charger like a romba?

It depends on what you run off of the board, the more you run the less time it'll last. It also depends on how low you let the LiPo go.

Yes, you can have it "self charge", the board and software can make it possible to do practically anything you can think of if you put the time in.

Also I can't seem to find the actual dimensions of the ez board

Also am I correct to assume that the camera needs the computer to be running too with the robot for face track n such?

Dimensions of the board are in the manual

The PC needs to be running for both the Camera and the EZB to work.

Darn I guess this is not an option for me

Due to the way the EZB and ARC/EZ-SDK work it needs a Windows PC to control it, that's what makes it ez.

Many people use small form factor mobos and fit them in their robots, or use small dedicated netbooks, windows tablets, laptops, desktops etc. connected via bluetooth (or upgraded for wifi/rf). It is an added expense but it's worth it.

What was it that you were hoping to use the EZB for? Edit: Just read your post again so ignore that question.

You could use the EZB but I assume the quadruped isn't going to be large enough to accommodate a PC so it would need a PC remotely, which can be done and is done often.