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Thread: Has anyone used orbtronic 16650ís in surefireís?

  1. #1
    Enlightened
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    Default Has anyone used orbtronic 16650ís in surefireís?

    Has anyone used these batteries in surefireís that are normally supposed to take two cr123ís? If so, how did they do?

    I have a current production 6px that I would like to use these in and plan on getting a 1000 lumen e2d defender that would also be nice with rechargeable cells. I donít know anything technical about lights or batteries and just want to make sure using these would be safe for the lights, batteries and myself. Would the runtime be better, worse or pretty much the same as using two 123a primary cells? What would be a good charger to use for the 16650ís?

  2. #2

    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    I have a Surefire 6p with a Malkoff drop-in and use Keepower 16650's with no issues. My charger is a Nitecore D4 and it charges every battery size I have.

  3. #3

    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    I bought several Orbtronic 16650s about a month ago. They fit fine in my older model SureFire 6P, G2, and C2.

    Checkout the Orbtronic site, they have good tech info.

    orbtronic.com/16650-li-ion-battery-rechargeable-protected

    They rate these with a max discharge capacity of 5 amps. I don't know anything about the newer Surefire lights, but that'll probably be enough.

    Their website sells chargers too, by the way.

  4. #4

    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    Quote Originally Posted by Megalamuffin View Post
    Has anyone used these batteries in surefireís that are normally supposed to take two cr123ís? If so, how did they do?

    I have a current production 6px that I would like to use these in and plan on getting a 1000 lumen e2d defender that would also be nice with rechargeable cells. I donít know anything technical about lights or batteries and just want to make sure using these would be safe for the lights, batteries and myself. Would the runtime be better, worse or pretty much the same as using two 123a primary cells? What would be a good charger to use for the 16650ís?
    Make sure to read up on Li-ion cells so you have some understanding of how to treat them and what to expect from the cells as far as run-time goes. I'd say do that BEFORE you buy the Orbtronic cells and a charger.

  5. #5
    Flashaholic* adamlau's Avatar
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    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    The Orbtronic 16650 is a rewrapped and protected Sanyo UR16650ZTA limited to 4.20V. It is a good cell. I have several myself.

    Quote Originally Posted by Stress_Test View Post
    They rate these with a max discharge capacity of 5 amps. I don't know anything about the newer Surefire lights, but that'll probably be enough.
    CR123A are specified at 1.5A max discharge (3.5A pulse).

  6. #6

    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    Quote Originally Posted by Megalamuffin View Post
    Has anyone used these batteries in surefireís that are normally supposed to take two cr123ís? If so, how did they do?

    I have a current production 6px that I would like to use these in and plan on getting a 1000 lumen e2d defender that would also be nice with rechargeable cells. I donít know anything technical about lights or batteries and just want to make sure using these would be safe for the lights, batteries and myself. Would the runtime be better, worse or pretty much the same as using two 123a primary cells? What would be a good charger to use for the 16650ís?
    First off, I just want to say that you should be fine with using your E2D with a 16650 (although you should do your research on the potential dangers of Li rechargeable batteries in flashlights and come to your own conclusion). That being said, my experience with the 16650 is on the SF Tactician (E2T-MV; 800 lumen with 2xCR123's).

    I've used an Eagletac 16650 in my SF E2T-MV. Noticeably less lumen, but longer runtimes... albeit with even lower lumens as the cell discharges. @Jose Marin on this forum linked a written graph of his findings, and I find that my unofficial "eyeball" observations seem to mimic his findings (link to Jose Marin's graph). I would assume that the SF E2DC might similarly have significantly lowerd output compared to fresh CR123's. I've since took the 16650 out of my E2T-MV and made it a dedicated "defensive emergency" light with primaries (2xCR123's) for longer term storage.

    I would assume that you will have noticeably less lumen with a 16650 on your 1000 lumen E2D Defender, although it would still probably be considered very bright. I found that if I had my light stored for a few months and brought it out, the voltage drop from storage made it seem like it was running at around 60% output compared to a fresh set of CR123's, and around 80% output compared to the 16650 fresh off of the charger. For the record, I have the older E2D Defender LED (200-300 lumens maybe?), and with the same 16650 it seems to be only putting out like 50 lumens on high (eyeball guesstimate). For rechargeable, user replaceable battery lights, I've swayed away from SF, and dedicated my E2D (older version), E2T-MV, and EDCL2-T for situation specific emergency flashlights, and use other brands for general purpose lights for working, everyday, or sporting activites. I have considered taking the 2xCR123 heads, getting and using 1xCR123 bodies with a 16340, but it seems like a lot of bother and expense for lights that have compromised general purpose specs, while further compromising the tatical lumen parameters.

    You have to remember that 2xCR123's is 6 volts (nominal), and 1x 16650 is 3.7 volts (nominal). So you're starting off with a lower voltage with the rechargeable 16650. I don't know how these lights will fair with 2x16340's (though 7.4v nominal) or 2xLiPo equivalents (6.4 volts nominal). I'm afraid it might damage the LED over time so I haven't tried it... I also don't own any LiPo batteries.

    I'll add, that although I have not ordered CR123's from online dealers, a pack of 12 SF CR123's bought directly from Surefire is less than a similar 12 pack of Energizer of Duracell from the local HD (although I don't emeber shipping costs). Even Cabela's Streamlight batteries are sold at $7 for a 2 pack (more expensive $/cell than a 12 pack of Energizer, Duracell, or SF) if you are looking to pick something up locally.

  7. #7
    Flashaholic* dc38's Avatar
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    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    I tried an Orbtronic in my older EB2, the max brightness seems to be limited by voltage, looks almost like a pwm mode.
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  8. #8

    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    I have a couple in two of my 6Ps.

  9. #9
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    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    Thanks for all input.

    It sounds like I will get more of what I want out of these lights by just running 123 primaries, which I donít mind buying, rechargeables are just so convenient. I have been using 3.2v rechargeable 123ís that surefire recently came out with and they work well but with greatly reduced runtime.

  10. #10
    Flashaholic* Timothybil's Avatar
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    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    If running 16650s, another alternative is to swap out the P60 head for one designed for use with LiIon cells, like the ones from Lumens Factory and Malkoff.
    Remember, Two is One, and One is None!.

  11. #11

    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    Quote Originally Posted by Timothybil View Post
    If running 16650s, another alternative is to swap out the P60 head for one designed for use with LiIon cells, like the ones from Lumens Factory and Malkoff.
    Would you (or any member) happen to know if the Malkoff 16650 and 18650 disable some of the function of particular SF models? For example, the gas pedal design of the EDCL-x T, or the twisty feature of the E2T-MV?

  12. #12

    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    I use these in Surefire 6Ps daily. I've only had one problem. One arrived dead. I emailed their support and they ended up sending me another one right away. Very happy with them.

  13. #13
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    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    I ended up ordering a pair of orbtronic 16650ís and the charger they recommended. I tried them out in my 6p with a malkoff m61wll drop in (80 lumens) and a 600 lumen 6px. I tried one in my old 130 or so lumen streamlight polytac, which was a very tight fit. I donít plan on using it that way and was just curious if it worked. Worked perfectly in both surefires and I didnít notice less brightness with either compared to new primary cells. If they could be compared side by side there may be a small difference but I donít have a way to test that.

    I expect they will run a looooong time in my 6p with m61wll drop in. Really that drop it runs long enough it doesnít need rechargeables but no one ever disliked free lumens. Iím glad I went ahead and bought them, I think they will work well for me.
    Last edited by Megalamuffin; 03-06-2021 at 11:44 PM.

  14. #14

    Default Re: Has anyone used orbtronic 16650ís in surefireís?

    That's cool. Glad it worked out. I've been happy with the Orbtronic cells I've purchased.

    Incidentally, I also have a Streamlight Polytac and it's the same way. There was one 16650 out of the group I bought that could fit without major difficulty, but it still took a push to get the cell in. And getting it out was tough of course. That light for me will just stay as a standby backup with lithium primary cells in it.

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