What about the idea of making tx battery packs using the Radio Shack battery holder and soldering on the required tx connector.
One could get very reasonably priced high capacity packs if it works. My concern would be the reliability.

That is in a sense what a lot of tx use if user installs high cpacity AA cells.

This post answers my question. I am definitely going to the battery holder with nimh cells.

http://www.rcgroups.com/forums/showthread.php?t=350745

Make your own battery packs. Don't mess with a holder. better protection against battery loss.

you gotta make sure you do it right, or it will be a waste of money and effort. make sure you have correct voltage and stuff, or something might mess up