Why SL Argo has just 1 hour of high mode?

Kiu · Apr 6, 2004

I have just bought this headlamp & play it several days.
With 3 mode switching 1W, it will an killer if the runtime can be longer.
For 3xAAA alkanine cells say 1200mah, isnt it very inefficient that only 1 hour output for 1W? /ubbthreads/images/graemlins/icon3.gif
The efficiency of the convertor board seems below 50%...??
And anyone one have try measure the current drive from the cells?

Floating Spots · Apr 6, 2004

My guess would be that the internal resistance of the AAA batteries is where most of the energy is going.

I don't have one of these, but does it really have regulation?
I had heard that the 'digital' regulation was your 'finger' pressing the button.

Floating Spots · Apr 6, 2004

From http://data.energizer.com/

With a 400 ma discharge rate down to 1.0 volts per cell, there is just a hair over 1 hour of service life.
End result is a 400 ma to 450 ma /hr battery.

AAAs are great for low discharge.
Suck at high discharge.

Emilion · Apr 12, 2004

http://www.candlepowerforums.com/ubbthreads/showflat.php?Cat=&Number=533044&page=1&view=collapsed&sb=5&o=&fpart=1

I've made a little review on the Gentos BeamChanger, same as the SL Argo. Got 3 hours high output with 1300ma Li-ion.

Emilion · Apr 13, 2004

Here comes some photos for my Li-ion battery used in the Gentos Beam Changer

1. A 1300ma 3.7V Li-on
2. Insert 3 cotton sticks (found in first-aid packs)
3. Another view from the (-) pole
4. Make the (+) pole like this
5. Put a little screw, this screw MUST have contact with the battery surface, which is (-)
6. Optional Spring to fill the space between the battery and the battery holder cap.

rlhess · Apr 30, 2004

If you look at the Energizer curves you'll see that at 450mA (which is what my Argo drew with fresh Panasonic AAA alkalines) you're only getting a bit more than half an hour to 0.8V.

One of the more annoying things about the Argo is that it will deplete a set of batteries in 3-4 months without even turning it on. I measured the idle draw at 450µA (that's micro-amps if the µ didn't show properly).

Cheers,

Richard

Why SL Argo has just 1 hour of high mode?

Kiu

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Floating Spots

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Floating Spots

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Emilion

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Emilion

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rlhess

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