Radio Shack is unlikely to be able to help. I couldn't get a wall pack from there to charge my meter to save my life. Not to mention it would have cost easily quadruple at Rat Shack vs the surplus store I got it at ($30 vs $7.50).
Or you could just call the manufacturer and order a charging cord. Or you can build your own. Follow this link:
http://www.angelfire.com/electronic/hayles/charge1.html
