On 12/25/2013 9:04 AM, John Niolon wrote:
> I tried flipping battery...still dark... checking voltage one lead on the
> positive battery post and the other on the case where the led screws in... got
> 1.5vdc there... so the problem must be in the led assembly... too small to
> canabalize... it's only about 1/2" in diameter and 1/4" high... it's just odd
> that all 4 would fail... the seller offered no info except a refund. BTW
> here's a better link below if anyone is interested... the others that I
> bought previously are good lites with a long runtime for a single AA.
LEDs have a specific forward voltage and it won't light unless the
voltage is maintained. Battery voltage can be different under load. 7
watts is a lot of power to run on AA and the voltage may drop well below
the forward voltage with a cheap battery. Standard "Heavy Duty"
batteries often supplied with lights do not produce a consistent voltage
over its life. The voltage drops over time. As soon as the voltage
drops below the forward voltage the LED will not light. Alkaline
batteries will produce a more consistent voltage over the usable life
then drop all at once at the end. You might try a new, fresh alkaline
or lithium battery.
>
>
> http://www.amazon.com/BBQbuy-300lm-Flashlight-Torch-Adjustable/dp/B006E0QAFY/
> ref=sr_1_1?ie=UTF8&qid=1347327761&sr=8-1&keywords=cree+flashlighthttp://www.a
> mazon.com/BBQbuy-300lm-Flashlight-Torch-Adjustable/dp/B006E0QAFY/ref=sr_1_1?i
> e=UTF8&qid=1347327761&sr=8-1&keywords=cree+flashlight
>
> and Merry Christmas to all you shop-talk guys... you've saved my bacon a few
> times this year... thanks
>
> john
>
>
> Many people are alive only because it's illegal to shoot them.
>
>
>
>
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