NOOO, Dang how many time do I have to say it! Flashlight manufacturers do not use a watt to indicate an output!
They simply can't multiply and use creative rounding to market their LEDs. See here's the same dang LED sold as a 20W LED:
http://www.dealextreme.com/details.dx/sku.5848 It's some cheap Chinese LED that they label creatively to sell.
You can't keep claiming a watt as an output either. Claiming a watt as an output would make efficiency a watt per watt... which is a unitless number! WTH!
EDIT: Do you also realize if what you stated were true that they are claiming 15W as an output and the math tells us 12W as the input... that LED would be outputting more than it was getting in defying physics!
Bookmarks