:welcome:
Some examples were given during a recent discussion on this forum, assuming that you need a standard PR-type bulb (sure looks like it):
http://www.candlepowerforums.com/vb/showthread.php?330018
Dorcy has a 6V version with model number 41-1644. The nice thing about the Dorcy drop-ins is that even though the type of LED they use has some disadvantages, they are very efficient, inexpensive, and they have a built-in "diode bridge" that allows them to function regardless of polarity, much like an incandescent bulb (as far as I know, the others are sensitive to polarity). It should be just about as bright as the bulb that you're currently using, I would expect, but it will stay bright and run for much longer. The other drop-ins may be slightly brighter and have a purer white tint (unless you're unlucky and get a sickly greenish one :green
, but they're more expensive and probably not as efficient. I doubt that any of these drop-ins are as bright as the halogen bulbs are when the latter are running on fresh cells, though.
