Rechargeable Batteries...you may wish to consider the Sanyo eneloops.
Search them out on Amazon as the prices and the packaging (number of types and sizes varies).
http://www.amazon.com/s/ref=nb_ss_0_...op&sprefix=ene
I just purchased item 11, which includes AA and AAA batteries, charger and carrying case.
BTW this is the best test of "budget" LED lights I have seen so far.
http://www.candlepowerforums.com/vb/...d.php?t=222462
Bill you should provide a DeLight for testing. Good exposure.