Modeled from scratch in OpenSCAD from http://www.thingiverse.com/thing:35515 with a couple of minor improvements, primarily being that it is now entirely parametric. I also added channels in the side because I wanted to have the leads come out of the same end of the battery. I have personally tested this with AA, AAAA and 18650 cells but I left the code as open as possible to use any size you need. Feel free to post useful or tested measurements in the comments.
Set the parameters for your cell size, how many you want in your battery and Customize. Once your holder is printed out grab 2 5mm M3 countersunk screws and nuts per cell and some 22 AWG stranded hookup wire. Feed a stripped and trimmed piece of hookup wire through the holes at each end of the clip and secure in place with the screw and nut. Optionally, feed one of your hookup wires through the channel on the side to get both wires coming out basically parallel.