Awesome pucklight

[LEDrock]

At Menard's last night, I saw an ad that featured a 24 LED pucklight. It was one of the "free" items they offered for buying $10 worth of other stuff, which I was already doing. It runs on 3AAA batteries and is now my brightest light! My former brightest is a River Rock 2AA that supposedly puts out 42 lumens. This pucklight puts out MUCH more light. It's not a flashlight per se, but it could be carried in my coat pocket. I'm really impressed with it!

Does anyone have any clue as to how many lumens are put out by 24 5mm LED's? One of them is dead, so it's officially 23 for me.

 

[Calina]

Probably about 70 lumens but it could be as high as 100 even 120 lumens depending on the quality of the LEDs and how hard they are driven. Don't expect a long runtime on 3 AAA. They are likely run in parallel ,don't have any kind of driver and shouldn't live very long. One LED already died, you can expect more of the same and as the ones that survive get more and more current the death rate will accelerate.

 

[LEDrock]

Probably about 70 lumens but it could be as high as 100 even 120 lumens depending on the quality of the LEDs and how hard they are driven. Don't expect a long runtime on 3 AAA. They are likely run in parallel ,don't have any kind of driver and shouldn't live very long. One LED already died, you can expect more of the same and as the ones that survive get more and more current the death rate will accelerate.

That sounds like what happens to Christmas light strings when bulbs start burning out.

Do you think just running a light like this as a "battery drainer" with weaker batteries would extend the life of the LEDs? That's what I was thinking of doing. As it is, it's way too bright for the purposes I'd be putting it to.