Surefire 9P + 2 x Eneloops + M61WLL (Yes, I already searched!)

[shane45_1911]

I did search but couldn't find any specific info on this combo.

Does anyone know the runtime and approx. lumens running a 9P with a couple Eneloops and an M61WLL ?

TIA.

[BIG45-70]

I did my own runtime test but turned the light off before the batteries went out. There actually wasn't even a noticeable drop in output actually. That was at 14 hours.

[RI Chevy]

I am thinking of almost the same thing, except using a M31WL. Just mentioning that the AA's match up better to the M31 than the M61 as far as voltage and run times.
14 hours is very respectable with that combination (9P with 2 AA's and M61WLL).

[shane45_1911]

Nice. Thanks guys.

Yeah, i realize the M31 is more suited to the Eneloop voltage, but I am looking to use this light with 3xcr123s as well, and use AA/Eneloops as backup - therefore the M61WLL fits the bill nicely.

[notrefined]

I ran one for 20+ hours on a pair of alkaline AAs, if that is of any help.

[shane45_1911]

if that is of any help.

Absolutely. Thanks.

[RI Chevy]

I did not think of that, but you're absolutely right. You get more functionality with the 9P with the M61WLL in using CR123's and AA's. I am impressed by the reported 2AA run times.

[ElectronGuru]

In currently running a test in a G3 with 3x 123s but will switch over to eneloops next...

[shane45_1911]

In currently running a test in a G3 with 3x 123s but will switch over to eneloops next...

You da man! Thanks Dan.

[hotlight]

IIRC, with a standard M61 on x2 eneloops I got something like 10 days until the cells were 1.20v. Still was going , but, dim. And didn't want to take the eneloops too low

[AnAppleSnail]

I have 2/3A NiMHs that might work well with this setup. You may like them for the reduced length involved.

[shane45_1911]

IIRC, with a standard M61 on x2 eneloops I got something like 10 days until the cells were 1.20v.

Wow. Awesome...

[RI Chevy]

In currently running a test in a G3 with 3x 123s but will switch over to eneloops next...

Are you testing the new M61LLL?

IIRC, with a standard M61 on x2 eneloops I got something like 10 days until the cells were 1.20v. Still was going , but, dim. And didn't want to take the eneloops too low

Very impressive. Thanks for doing the test.

[BIG45-70]

In currently running a test in a G3 with 3x 123s but will switch over to eneloops next...

sweet I'm looking forward to the results on this one!

[ElectronGuru]

Are you testing the new M61LLL?

Yes.

[RI Chevy]

Nice.

[purelite]

You get noticeably less output on an M61 with AA batteries though. Just dont want anyone to be disappointed and think you are getting full output on 2 AA baterries. That goes for the LL version also. There is to my eye a 30-40% decrease in output . Even on 4 AAs it seems just a bit less brite than on primaries.

[RI Chevy]

The AA's match up better with the M31 I guess. As far as output and voltage.

Thanks for the clarification purelite.

[shane45_1911]

The AA's match up better with the M31 I guess. As far as output and voltage.

Thanks for the clarification purelite.

Yep - but again, I am looking to use CR123s primarily, and AA/Eneloops as backup. An M31 definitely is not compatible with 3 x CR123s.

[Kestrel]

You get noticeably less output on an M61 with AA batteries though. Just dont want anyone to be disappointed and think you are getting full output on 2 AA baterries. That goes for the LL version also. There is to my eye a 30-40% decrease in output . Even on 4 AAs it seems just a bit less brite than on primaries.

My feeling is that the difference in output between 2xAA NiMH and 2xAA Alkaline could be significant, under very light loads the alkalines should have a higher voltage output than the NiMH's. I'm only guessing that the difference in output might be substantial - it's just my feeling though, I'd like to see a beamshot comparison for them. I'd do it but I don't have any M61's, lol.

Edit: The reason I'm stating the above is that I think that this is what Greyshark reported with his M60 & M60LL test with 2xAA NiMh and 2xAA Alkalines, IIRC.

Here is his thread, I don't have time to review it at the moment but will be able to later.
Malkoff M60LL On 2x AA

[notrefined]

I can report that the M61LL is significantly dimmer on 2x NiCd than 2x alkaline AAs

[purelite]

Its amazing to me that such a small difference in voltage on the Malkoffs can make that much of a difference . I wonder why that is? I read that they stay in regulation down to 3.4volts? but I see a difference at 4.8 or 1x18650 at 4.20 off the charger.

[ElectronGuru]

currently running a test in a G3 with 3x 123s but will switch over to eneloops next...

Test one complete. Lap 1 is fully regulated. Lap 2 is dimming.

[Sgt. LED]

Please stock more neutral LLL's please!!!

[shane45_1911]

Test one complete. Lap 1 is fully regulated. Lap 2 is dimming.

Cool Dan - but just so I am clear - is this with an M61WLL or an M61WLLL ?

Thanks again for doing this!

[ElectronGuru]

Sorry, that's a 61NLLL in a G3 with 3x SF 2021 cells testing fresh on a ZTS and volt meter.

Please stock more neutral LLL's please!!!

On it.

[skyfire]

so does that mean you have 1 more M61NLLL in stock? or are you keeping that one?

also, is the LLL brighter on 3x CR123?

[T45]

Why on earth is no one stating what LUMENS they are getting with these setups? ceiling bounce, close to, almost, seems like.....SOMETHING. By the way, I will be getting a M60LL for my Surefire Lego Project: M2(old style) Bezel, 9P body and a Z41 tail cap with a McClicky installed. Nice to know I can run it with 2 AAs If I have to.

[ElectronGuru]

is the LLL brighter on 3x CR123?

Can't really see with the eye but the light meter is reading 25% more on 3 than 2.

so does that mean you have 1 more M61NLLL in stock? or are you keeping that one?

PM sent.

[ishmael]

Please stock more neutral LLL's please!!!

Overready had some in various flavors ysterday PM and still showed several in stock after my two.