Malkoff M31

mfrey

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I figured I'd start a thread on Gene's forthcoming low-voltage offering.

Does anyone know if it will run in regulation at full power off one AA?
 

bigchelis

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Finally: a Malkoff M31...


I want 200 plus lumens off a single AA NiMH or 2 NiMH?

Dereelight and Solarforce and the old M30 do not do this:mecry:
 

MrGman

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he has fine tuned the boost circuit to be better optimized at the lower voltages of 2AA and 1 CR123 battery that is more realistically at 3V or less and not something up to 4.2V. So I am guessing that its more likely to be at full power with a non rechargeable lithium battern below 3V and in the 2.7V range, and will probably make very close to full power if not still holding full power off of 2 AA NiMH rechargeables in the 2.4 to 2.7V range, much better than the older M30 series that really needed 3.7V to kick in full power regulation. Testing on a DC power supply is the only way to know for sure. But I think that was the whole idea of changing around his driver circuitry.
 

donn_

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I like the 5.5V top range of the M30. One of my favorite setups is an M30 in an old SF with 4x Elite 1500 2/3A cells. At 4.8V, it's the brightest M30 I've seen.
 

bigchelis

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I like the 5.5V top range of the M30. One of my favorite setups is an M30 in an old SF with 4x Elite 1500 2/3A cells. At 4.8V, it's the brightest M30 I've seen.


Its cause you havent seen my M30 with super low vf. At 4.2V input it draws 1.8A off AW 17670:whistle::whistle:

cheers:wave:
 

donn_

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I've run about a dozen different M30s on a wide variety of cell combinations. Same with M60s and M61s. Nothing does better than the 1500 Elites. They get closer to maximum V-in and have amazing current capability.

Try them.

I don't bother with measurements. I have enough SF bodies and tails to do side-by-side testing.

In my world, what looks brighter is brighter.
 

Bullzeyebill

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I've run about a dozen different M30s on a wide variety of cell combinations. Same with M60s and M61s. Nothing does better than the 1500 Elites. They get closer to maximum V-in and have amazing current capability.

Try them.

I don't bother with measurements. I have enough SF bodies and tails to do side-by-side testing.

In my world, what looks brighter is brighter.

Are you using the A14 with a 6P size body? I've got the conversion setup, and have always thought about using loose high capacity 2/3A cells with my M30.

Bill
 

Bullzeyebill

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Wow no R123?

Does this mean we'll see a MD2xAA? :popcorn:

You could do an MD3 with 2AA. Would be a perfect fit, with something rolled up inside to reduce rattle. Don't forget the 2AA bodies coming up, not MD compatable, but will take the VME head.

Bill
 

KDOG3

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Now if we can get a one cell body and have the high-low switch work in the VME head that would be fantastic.
 

KDOG3

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Even better would be an M31L that would also work with the hi-lo switch in the one cell body....That way you could still have killer output PLUS longer runtime...
 

zwerky

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Now if we can get a one cell body and have the high-low switch work in the VME head that would be fantastic.

+1 on this. i have an M30 in a vme head/twisty body setup -- love this light, but would also like to see it have a lower mode for longer run time.
 

Bullzeyebill

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+1 on this. i have an M30 in a vme head/twisty body setup -- love this light, but would also like to see it have a lower mode for longer run time.

Use the M61L, or M61LL for longer runtime on an RCR123 with the VME head/short twisty body. It will run in regulatiion.

Bill
 

BigusLightus

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3.3V max? Might be perfect for those 16340 LiFePO4 cells laying around and being under used. 3.2V nom. 3.5V hot.

Any speculation about performance from two NiMH's @ 2.4V nom. 2.8V hot.

Donn_,
Just ordered a bunch of 2/3A. The small size opens up several pastabilities. I'm guessing two will fit in a 6P and be approx. 6 mm short? Thanks for the ideas.

lovecpf especially when I learn something new!
 

Paul_in_Maryland

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Re: Malkoff M31 on three nickel-zinc AAs

I like the 5.5V top range of the M30. One of my favorite setups is an M30 in an old SF with 4x Elite 1500 2/3A cells. At 4.8V, it's the brightest M30 I've seen.
I own two M30WF modules. One is driven by two NiZn AA cells, the other by three NiZn AAs in a Fivemega 3xAA body. Eac packs a punch. In the 3xAA, the resulting flood is marginally brighter but essentially equalled by my 3xNiZn Dereelight XP-G + diffuser lens from Flashlightlens.com.

Before he settles on a voltage range, I hope Gene considers the growing popularity of nickel-zinc AA cells. It would be a pity if the M31 couldn't be driven at 4.8V to 5.1V under load.
 

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