I’m looking to power two HiTEC HS-645MG servos using the SSC-32. Is it really necessary to make use of seperate power supplies for the servos and board, or would say one 6V NiMH battery be sufficient. This is part of a larger system controlling a camera and I’m just looking to get the longest possible operating time. Does anyone have thoughts on whether lithium supplies offer any substantial advantage over NiMH (or Cad)? The project also will make use of a motor of some kind. Is there a way that the SSC-32 can be used to control motors as well as servos? Any answers to any questions would be greatly appreciated.
I have not had any problems running four servos, bot board, and SSC-32 from a single battery. I use 2800mAH battery packs, but a single 1600mAH pack should work equallly well (with reduced runtime per charge). Use the NiMH packs sold by Lynxmotion, rather than NiCad packs. NiCad packs have a memory that can mess them up for full charges if you don’t run them completely down each time. I am guessing you could probably go up to at least 8 or 10 servos for a single battery pack setup.
8-Dale
We routinely power Biped Pete (22 x 5645) with a single 6.0vdc 1600mAh battery pack. The biped draws around 4 amps and will operate for about 25 minutes on a charge. You can find higher capacity packs that are about the same size, but they will cost more. So I think powering only two 645 servos is not a problem. 
As for controlling DC motors from the SSC-32. For that you just need a motor controller like any of the Dimension Engineering ones we sell. They are available in single and dual configurations at different amperage capacities.
lynxmotion.com/Category.aspx?CategoryID=10