jtr1962
Flashaholic
Unfortunately, data sheets are often wrong, especially with generic Chinese LEDs. The only way to determine to lumens and watts is to actually test the LED. In fact, that's the reason why I started testing LEDs in the first place-because the data sheets either didn't exist, or couldn't be trusted.I saw your this thread Forum on caculating lumens for white leds... http://www.candlepowerforums.com/vb/showthread.php?89607-White-LED-lumen-testing .....
I have this flash light DP-722b... I want to know its LED Lumens and Watts...
I am sending you its Datasheet... It is 5mm Straw Hat LED... can you please find it out for me the exact Lumens and watts for it..
http://underwaterseaplants.awardspace.com/led.pdf
Unfortunately, I stopped testing LEDs a while back on account of lack of time, and I doubt I'll ever have time again in the near future. All I can tell you is in all likelihood your flashlight is putting out less than 5 lumens per LED. 5mm LEDs just can't put out a lot of light due to their poor heat dissipation limiting the currents they can be driven at.