CY: Price. The carbon zinc AA cells are eight for a buck,
at Dollar Tree. Alkalines are four for a buck. Some consumers
don't know that alkalines last four times as long. As such,
a much better product for the money.
CY: In the US, Rayovac used to sell alkalines
called "Renewal" which were supposed to be
rechargable up to 25 times. I did buy some,
but not used them for much.
Posted inline, after my initials. As a courtesy.
Christopher A. Young
learn more about Jesus
Hope the link comes through. Anyhow, the emitters
are differnt than the LED commonly in use.
Almost 36 hours, and the light is still working.
And, still using the cheap carbon zinc battery.
That surprises even me. I remember the day when
we got three or four hours of light on filament
bulbs. Some day I need to check the current draw
of this Cree emitter.
At about 9 AM (nearly 36 hours, but not quite)
the light went out. I took out the battery to
check the end voltage. Which was 0.79 volts.
I noticed a couple drops of liquid in the bottom
of the flash light. The battery turns out to be
leaking. Oddly, the flat negative end had a bit of
liquid, and the battery was blowing bubbles. Not
sure why that is. I put some paper towel under the
battery in the trash can. Rinsed out the flash light
with warm water, and left it open to dry.
One amazing flash light. Doesn't do every thing,
but it does a good job as indoor light when you
need a little light, but not much. And the battery
life is exceptional.
On Fri, 6 May 2016 09:22:42 -0400, Stormin Mormon wrote:
Using very crude numbers, an LED is maybe 90% efficient and an
incandescent is maybe 10%. Right there, I'd expect nine times the run
life. You said your experience with the old flashlights was 3 or 4
hours, so, a nine fold improvement would give somewhere around 27 and
36 hours. Bingo.
On one hand you only have one cell in the new instead of two in the
old. On the other hand the new one can work down to .8 Volt. The
incandescent would have stopped producing any visible light long
before the voltage got that low; the joule thief circuit has gotten as
much out of one battery as two in the old style.
Well, you have milked this for 8 posts now. Time to move on. Perhaps
test it against EMP. Can you speak North Korean?
And now.... I've found a use for the flashlight! I've got these
damn run down AA batteries run down to much to be useful but still
enough charge to not throw away. So a single cell 18650 battery holder
with a spacer ( bolt that happens to be the right size) the test meter
which doubles for the jumper wires... and now the AA is running the LED,
the electrons are making photons now that won't wind up the city
landfill. It's kinda like not throwing out good food but feeding it to
the neighbor's dog.
On 5/7/2016 6:25 PM, Mr Macaw wrote:
After my great grandmother died, we found a ball of string labeled,
"string to short to do anything with". I suppose I inherited some of
Here's another thing I don't have... but if I see one at the Dollar
Tree I'll have to have it.
Just to take apart and see what's inside.
On Sat, 07 May 2016 21:48:07 -0500, My 2 Cents wrote:
But holds half the total energy of a model with four cells. You will
get half the charges. Fine if you can recharge regularly. If you are
away from home or a heavy user, one might consider the 4 cell
versions. Twice as big, twice as heavy. Pick your poison.
On Sat, 07 May 2016 18:19:40 +0100, "Mr Macaw" wrote:
Where shall we start. Genesis chapter 1, verse 1 work for you or
should we go back to Gilgamesh? Or perhaps send pictures of cave
The world moves on. Everyone adds and changes. Much is abridged in the
daily process. This is not an historians club.
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