A good start to a very bright headlight

[Geebee]

http://www.banggood.com/12-90V-Electric-Cars-Motorcycles-Led-Headlights-p-934810.html
£9.41, Upto 100v, 6x 5w leds

 

[Alan Quay]

Hmm, nice find. I've been asked by a mate to come up with a bright light for shooting rabbits, with a lithium battery pack this could be the answer.

 

[Geebee]

Hmm, nice find. I've been asked by a mate to come up with a bright light for shooting rabbits, with a lithium battery pack this could be the answer.

Off the shelf solution for bopping bunnies, you need 4x 18650 and charger though.
http://www.banggood.com/Ultrafire-3xCree-Xml-T6-5-Mode-2000Lm-LED-Flashlight(4+18650)-p-69239.html

 

[Alan Quay]

Ok, so I got the six LED headlight, £9.41 from above post, thanks to Geebee for the tip.

Here is some empirical data, and some less than empirical data.

The unit comprises 6 SMD LED's, each with its own reflector. There is a large heat sink on the back end of the device, which is screwed on, and can be used to mount the thing, through (aprox) 14mm hole.

When run for a bit (16v, 800ma) the entire thing gets hot. Just slightly too hot to hold.

I put it in the following housing to test:

From my back door, the church tower is near as dammit 100m. On the tower is a clock, diameter 400-500mm at a guess.

Even against a dimpsy sky (22:00h), I was able to light the clock face up enough to read the time. In my estimation, that makes it 'Proper fecking bright'.

At 800ma current draw from my 4s pack of recycled laptop 18650's it should run for 2 hours or so. The plastic housing might melt before that, I dunno.

I have yet to allow my friend to test it on the local bunny populace. If they are close enough he won't need his gun, just burn their poor retinas out then pick 'em up and knock em on the head with an old SLA.