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MiniMag, great little tool and very popular, especially when paired with a headband that makes it hands-free, if you use one trot over to Wally World and look in their sporting goods department for a LED conversion kit made by NiteEze, great price at just under $5. These units greatly extend the life of the batteries. At that price if it saves a four pack of AAs it has paid for itself.
The LEDs are also more rugged than the tiny incandescent bulbs. A good thing when your alone in the dark deep under a house and one less thing to worry about. Changing those tiny bulbs by feel in a tight spot is a pain.
Down side is that with the LED conversion in you lose the ability to focus the beam. No great loss. The beam, even with a new lamp and batteries, never had much throw and is always uneven. With the LEDs, it has three, the light is a soft and very even light that is easier on the eyes for work within 10' or so, where these lights are best and mostly used anyway.
The light is also slightly less bright and a bit bluer but, given the soft and even light of the LEDs, it doesn't seem to be noticeable. I quite like the light produced by the LEDs. The light is only slightly on the blue side and colors in this light are easy to differentiate. Possibly more than in the light from the normal incandescent bulb as they, especially when old and the batteries run down, tended to be more amber in color.
Orange, yellow, age yellowed whites, brown and some shades of red tending to look much the same. Add a little sweat in the eyes and a little dirt on the insulation and it can be, in the words of George Carlin, 'Heavy mystery time'.
Picture the scene from 'Abyss' where the guy has to cut the wire and can't tell the green from the red. An important issue for an electrician sorting wires by color and working in boxes with multiple circuits where only one is off.
The $5 kit gets you a plastic disc incorporating the three LEDs with a couple of prongs that fits where the normal incandescent bulb goes and a replacement reflector. Fitting the kit is child's play. Even a construction helper, or a mechanically inclined gorilla, not that there is much difference, could handle it.
Keep known good batteries in the flashlight. Unscrew the head of the flashlight, pull out the reflector and old bulb. Insert the LED assembly. If it lights up insert the new reflector in the head and reassemble. If not pull the LED assembly and reinsert after rotating it 180 degrees. Two prongs and two holes it will go in only two ways so simple trial and error.
It comes with instructions
Edited for spelling.
Edited 10/22/2005 9:19 pm ET by 4Lorn1