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In my observation, it's almost a rule that light makers will use a bulb that is rated lower than the amount of voltage they are supplying to it to get more light out of it (and presumably less life). Open a random consumer 2 D-cell (3V) flashlight and look at the numbers on the bulb. You'll most likely find a bulb rated at 2.4V or even 2.2V. While you're buying bulbs, I found a halogen replacement bulb meant for 6V flashlights in K-Mart (a general department store) the other day. It brightened up my 6V latern battery based flashlight considerably. If K-mart has it, it shouldn't be too hard to find one there or somewhere else. You'll also find replacement bulbs that include krypton gas around too (I see them in Radio Shack). I don't know how they compare to the halogen bulbs, but they are brighter than the standard bulbs. The bulb in my Underwater Kinetics light (UK-800) is claims to be a xenon/halogen combination and it is VERY bright (brighter than straight halogen). UK sells replacement bulbs, so you might think about employing one of theirs if you're looking for maximum brightness. The UK-800 uses 8 D-size nicads (1.2V each), so the replacement bulb for that would probably be underpowered by a 6V lantern battery, but you might ask them for a list of their replacements for other lights. Sorry, I don't have a phone number for them. They advertise in most of the larger scuba magazines. However, when you're shopping for bulbs, make sure that the current rating on the bulb isn't more than the batteries are rated at or you'll get battery overheating and short life. Bill Schell bill@al*.at*.co*
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