The Official Malkoff Junkie thread - Part 2

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Just for clarification, I'm talking about a single 18650 (2200) in an MD2. If I test this myself, that is, running the Wildcat on high until it goes out, am I in any danger of blowing up the battery?
 
Tracker II said:
Just for clarification, I'm talking about a single 18650 (2200) in an MD2. If I test this myself, that is, running the Wildcat on high until it goes out, am I in any danger of blowing up the battery?
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ohhhh dang. I feel like an idiot right now lol. I completely misread that post I originally responded to :(
 
I think you just have to make sure that the 2200 mAh battery has a protection circuit on it. I wouldn't try this with an unprotected battery.
 
the wildcat vr2 with an md2 body and aw 1x18650 with an elzetta mount is what i use on my A2.
plenty bright but i havent done any kind of runtime testing. it looks aweome on it.
 
Hoochie momma, I just went to turn off my Wildcat after leaving it on for 40 minutes and dang near scorched my fingers off! I set it in a big pot facing up in the kitchen and it seemed to hold it's initial brightness, or close to it, for nearly a half an hour but noticeable fading began to occur after that. It was still shining fairly brightly when I turned it off at 40 minutes but man was it hot. Even the rubber boot was red hot. I hope I didn't damage anything.
 
The Wildcat just shut off after 51 minutes and 45 seconds minutes of continual use oh high. It flickered for a second at the 35 minute mark. It flickered for about 5 straight seconds right after 36 minutes before returning to normal operation for the reminder of the test. I'm keeping it relatively cool by holding it by the head.

I haven't built an integrating sphere yet, so have no good way to measure output. It is noticeably cooler at the 45 minute mark than during the earlier stages of the test. After 50 minutes, the output is less than that of a warm M60F, but it's still going.

Your test proves that Malkoffs are built to take the heat of continuous usage, even without proper cooling.
 
Thanks for your test Grizzman. In retrospect, I should have known to hold the light. My previous tests involved low lumen lights and I just plain forgot about heat dissipation when I switched to a high lumen test.
 
Grizzman said:
. . . Malkoffs are built to take the heat of continuous usage, even without proper cooling.
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I can attest to that as well. I have performed continuous runtime tests on the Wildcat using 2x18650, 2x18500, and 3x123A cells while the light simply sat in a scope mount. Needless to say it gets plenty hot, especially toward the end of the regulated runtime as the current increases to compensate for the battery voltage dropping. After the 18500 test the batteries were just about too hot to hold.

The Wildcat is a big load for 123A primary batteries and smaller lithium-ion cells.

(From Malkoff Wildcat review)

Malkoff-Wildcat-XPG2.jpg
 
tobrien said:
to be fair, pits aren't inherently bad. that's all the news media talking.
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Sadly everything they were, and everything they were originally bred for has all but disappeared in this country.
 
quick question: do all current/recent M61 modules, regardless of number of Ls, have the same driver?

I guess what I'm asking is, assuming we use the same battery setup across variants, will runtime be the same on an M61L HCRI2 and an M61L and an M61L 219?

This is something I'm asking out of curiosity and it's not an issue in the slightest. I notice differences in the reflectors but am curious if I can expect the same runtime across models of the same L-count, etc.
 
Random Dan said:
Current draw is different on M61L and M61L HiCRI2. I don't know about the 219 though.
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gotcha, do you think that is because the LEDs being different efficiencies and the driver is trying to make up for it?
RI Chevy said:
Maybe an E-mail to Malkoff will get exactly what your looking for? I am curious as well. ;)
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I'll probably do that, but i don't want to pry lol
 
I don't have any HCRI2 modules (2900K is too warm for me), but I've got full powered XP-G, XP-G2, N, and 219 engines. I've also got L variants of XP-G and 219, so I can measure these also.

Results to follow soon.....
 
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In a Surefire C2, powered by AW 3400 mAh 18650 or Surefire CR123s, here are my readings with a Fluke 115 set to measure max amps:

Reading from 18650 first, followed by 2 CR123s

M61 219 - 1.173 amps - .879 amp
M61N - 1.149 amps- .843 amp
M61 XP-G - 1.025 amps - .738 amp
M61 XP-G2 - 1.055 amps - .705 amp

M61L XP-G - .270 amp - .255 amp
M61L 219 - .311 amp - .291 amp
 
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Grizzman said:
In a Surefire C2 with McClicky switch, powered by an AW 3400 mAh 18650, here are my readings with a Fluke 115 set to measure max amps:

M61 219 - 1.173 amps
M61N - 1.149 amps
M61 XP-G - 1.025 amps
M61 XP-G2 - 1.055 amps

M61L XP-G - .270 amp
M61L 219 - .311 amp
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oh yes, thank you so much! so are you measuring at the emitter (you mentioned mcclicky so I'm assuming you didn't measure at the tail?)?
 
I'm glad I could assist. I had some time to kill before starting dinner.

I've no idea why I mentioned the switch, since I measured at the tail.

Grizz
 
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