I was looking at getting one of the new Maglite D-Cell LED lights just so I could have a D-cell option. I have both 2 & 3 D-cell Maglites but with the old incandescent bulbs. In my internet surfing I found TerraLUX MiniStar5 LED replacements at batteryjunction.com. I didn't need to buy new Maglite flashlights, just buy fully regulated LED replacement bulbs and keep the old Maglite bodies.

I did it and they are great. Three D-cell batteries should have a pretty good life even when pushing 3 watts. No, I have not tested them to see just how long they last. It's got to be better than the original bulb with a lot more throw -- good enough.