$5.47 Plus a soldering iron and half an hour of your time.
$2.50 each shipped when you buy 2: LYCKEBY. 9 LED 3AAA tail-clicky flashlight, accepts non-tapered LED's. This is direct drive The color is rather blue and not very bright. I measured 700 mA at 3.70V with NiMHs. Not much to show for 2.6 watts.
$2.97 for 9 Pieces of a 50-pack of White JELED 50K from ebay for $16.50 shipped. These LED's put out ugly color variations and various artifacts, but with 9 together it all mixes up nicely. Installed, the 9 directly driven pull 460 mA at 3.80V with NiMHs. That's 1.7 watts...
According to this thread, at 51 mA the JELED emits 58 lm/W. Using NiMH batteries, I'm running this current at Vf=3.80. That means for 9 LED's, I'm pushing a floody beam of 100 Lumens.
Now since this is direct drive, the light is going to diminish instead of being flat. Sorry, I don't have equipment to measure light output runtimes.
This would be a "don't get too wet" flashlight. There is no seal for the plastic lens, and the button rubber is not compressed, but it is good quality aluminum.
$2.50 each shipped when you buy 2: LYCKEBY. 9 LED 3AAA tail-clicky flashlight, accepts non-tapered LED's. This is direct drive The color is rather blue and not very bright. I measured 700 mA at 3.70V with NiMHs. Not much to show for 2.6 watts.
$2.97 for 9 Pieces of a 50-pack of White JELED 50K from ebay for $16.50 shipped. These LED's put out ugly color variations and various artifacts, but with 9 together it all mixes up nicely. Installed, the 9 directly driven pull 460 mA at 3.80V with NiMHs. That's 1.7 watts...
According to this thread, at 51 mA the JELED emits 58 lm/W. Using NiMH batteries, I'm running this current at Vf=3.80. That means for 9 LED's, I'm pushing a floody beam of 100 Lumens.
Now since this is direct drive, the light is going to diminish instead of being flat. Sorry, I don't have equipment to measure light output runtimes.
This would be a "don't get too wet" flashlight. There is no seal for the plastic lens, and the button rubber is not compressed, but it is good quality aluminum.