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Thread: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

  1. #1

    Thumbs up NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Reviewer's Note: The EZ123 and EZCR2 were provided for review by NiteCore. Please see their website for more info on the EZCR2 and EZ123

    Warning: Pic heavy!



    Specifications from manufacturer's website:
    • CREE Q5 LED
    • EZ123 uses one CR123A/RCR, EZCR2 uses one CR2/RCR2
    • Brass heat sinking guarantees efficient and effective thermal management
    • Twist-activated output for easy one-handed operation
    • Straight-forward UI with two modes of output
    • Military-grade aluminum alloy
    • Mil-Spec Type-III Hard-Anodized finish resists scratches
    • Extensive knurling for excellent grip
    • Current-regulated circuitry
    • Water resistant to IPX-8 standard
    • Reflector optimized for a balance of output distance and spread
    • Impact-resistant optical-grade glass lens with anti-reflective coating
    • Flat base allows light to tail-stand like a candle
    • Designed to fit standard camera mounts
    • EZ123 Dimensions: 70mm (length) * 19mm (diameter), Weight: 26grams (without battery)
    • EZCR2 Dimensions: 63mm (length) * 17.5mm (diameter), Weight: 20grams (without battery)

    The EZ123 and EZCR2 are the new members of the EZ line, following in the footsteps of the inaugural EZAA reviewed previously. The design philosophy of the series is consistent - all models feature a simple two-stage twist interface and generally similar build. The differences between the models are subtle, but there are a few (aside from the battery sources, of course ).



    Packaging is similar to the other NiteCore small light series, and comes with a one-page instruction sheet, warranty card, wrist lanyard, extra o-rings, and new "lock-style" keychain clip. No holster or body tube clip is included (or available, AFAIK).

    Since I know size is the prime concern for a keychain light, here’s how things compare:


    (from left to right, Duracell CR123A, EZ123, EZCR2, EZAA, Duracell AA)


    (from left to right, Fenix L0D 1xAAA, EZCR2, EZ123, NiteCore EX10)

    EZAA: 85mm x 16.6mm, 20.9g (no battery)
    EZ123: 70mm x 19.0mm, 26.2g (no battery)
    EZCR2: 62mm x 17.5mm, 22.5g (no battery)

    In keeping with the EZAA, these new members of the family are similarly among the smallest I’ve seen for their respective battery classes. Note the walls seem slightly thicker on the EZ123/EZCR2 (which explains why they are slightly heavier than the EZAA).







    Fit and finish are excellent on my samples, no blemishes or flaws. Screw motion is fairly smooth on both, right out of the box. As with the EZAA, all lights have a brass pill – which is visible at the interface between the body and the head. All lights have a tripod screw attachment in the base (and can tailstand). With the slightly thicker walls, hand feel is very good on these new models.




    The emitters are all well centered, and give a fairly smooth beam. For beamshots below, all lights are on “standard batteries” to show you their regulated levels – Surefire CR123A (EZ123), Sanyo Eneloop (EZAA), and Panasonic CR2 (EZCR2). Distance is about 0.5 meters from a white wall.

    Hi mode:





    Spillbeam width for the EZ family is typically is slightly less than traditional size lights of the same battery class, likely due to the narrower head/reflector. The CR2 and EZAA seem to share the same reflector, and the EZ123 is slightly larger (leading to slightly wider spill). As you can see above, on standard batteries, the output of the EZAA and EZCR2 is about the same on max, while the EZ123 is brighter. Things are a bit more complicated on Li-ion rechargeables – scroll down to runtimes for more info.

    Lo mode:




    I’ve included a couple of slower shutter speed shots to allow you to compare the low modes. As you can see, the lights all differ on the Lo mode outputs, with the EZCR2 and EZ123 both being brighter than the EZAA. Scroll down to the summary table and runtimes for more details.

    User Interface

    User interface is very straight-forward: tighten the head until the light comes on (Lo mode). Keep tightening until full contact is made and the light switches to Hi. On my samples, it typically took about half- to three-quarters of a full turn past the Lo activation point to reach Hi. To turn off, loosen the head until the light turns off.

    As always, I recommend you be careful and not overly tighten the light on Hi. Even with the spring in the head, there is always a potential for this sort of design to result in battery crushing.

    The lights do not seem to use PWM for their output modes (or if they do, the frequency is so high that I can't detect it).

    UPDATE: I may have spoken a bit quickly - my testing setup does occasionally detect an intermittent signal in the 18-19 kHz range on Lo. But that is at the extreme range of my testing capabilities, so I'm not sure if you should trust it. Also not sure if its even PWM - could just be some sort of oscillating signal interference. It is certainly high enough to not cause a problem.

    Testing Method: All my output numbers are relative for my home-made light box setup, a la Quickbeam's flashlightreviews.com method. You can directly compare all my relative output values from different reviews - i.e. an output value of "10" in one graph is the same as "10" in another. All runtimes are done under a cooling fan.

    Throw values are the square-root of lux measurements taken at 1 meter from the lens, using a light meter.

    Throw/Output Summary Chart:



    Consistent with the beamshots above, you can see the Hi/Lo output differences on standard batteries. Unfortunately, I don’t have any RCR2 to compare in the EZCR2, but you can see how initial output of the EZAA on 14500 and EZ123 on RCR compare. Scroll down to the runtimes for more info.

    In case you are wondering how the EZ123 compares to other lights, here’s a few comparison tables. The EZAA is compared to the 1xAA class in its own review here.





    Output/Runtime Comparison


    (Sorry, there's an error in the labels to the graph above - the second EZAA Hi trace is actually on 14500, not L91 as listed. I'll fix it tomorrow.)

    As you can see, the EZCR2 on primary CR2 has exactly the same Hi output as the EZAA on standard alkaline/NiMH, while the EZ123 is brighter on primary CR123A. On 14500, the EZAA is close to the EZ123 on RCR initially, and both run direct-drive until their regulated level is hit – the difference being the EZ123’s regulated level is brighter than the EZAA



    On Lo, the picture is a little different. The EZCR2 is a bit brighter than the EZAA, and the EZ123 is brighter still. Interestingly, the EZAA on 14500 is initially as bright as the EZCR2 on primary CR2, but slowly drops off until the regulated EZAA Lo level is achieved. The EZ123 is again slightly brighter initially on RCR, but slowly decays until the regulated level is reached.

    Here’s how the EZ123A compares to the 1xCR123A/RCR competition:







    Output/runtime efficiency is quite good on the EZ123, especially for a Q5 emitter. Although not as efficient as the current-controlled competition, the EZ123A easily beats most other PWM-based lights.

    Potential Issues

    Tighten-to-activate twisty lights always have the potential to be battery crushers, so care needs to be used not to over-tighten. Inclusion of the head spring is a good idea, but common sense should still prevail.

    Preliminary Observations

    When the EZAA came out, I expressed some doubt as to whether it was truly small enough for keychain carry. It is certainly one of the smallest 1xAA lights out there, but this battery size may not be best suited for keychain use, depending on the individual. The new EZ123 and EZCR2 provide greater flexibility in output and battery source, providing you with greater choice within a common form factor.

    Consistent with their older sibling, the EZ123 and EZCR2 retain high build quality in a small package. Care and attention to detail seems excellent, with smooth thread action on all my samples. Wall thickness seems have been increased slightly on these new models, giving them a bit firmer feel than the EZAA. This is likely a good design choice, as the EZAA did feel a bit on the thin side to me (although still acceptable). The textured reflector does a very good job in providing a very smooth beam (especially for a Cree), with identical performance for the CR2 and AA versions (seems to be the same reflector).

    As I mentioned in my EZAA review, even if keychain carry isn't a priority for you, the keep-it-simple-stupid (KISS) interface and slim-lined design have great appeal for many. There are certainly a lot of options if you are looking for more sophisticated on complicated lights, but the simplicity and utility of the EZ line is hard to beat.

    In terms of output, I find it interesting how NiteCore has settled on a couple of output choices on Hi, depending on the battery source (see summary graphs above). The decision to the match EZCR2’s Hi mode to that of the EZAA makes a certain amount of sense, given the lower heatsinking mass of these lights (and lower storage capacity of the CR2 battery). Fans of CR123A format will be glad to see the higher output of the EZ123.

    And for those of you who find the Lo mode of the EZAA too low for general use, you will be glad to see that both the EZCR2 and EZ123 are a bit brighter. Looks like NiteCore listened to your feedback.

    All-in-all, two well-thought out new additions to the EZ family of KISS lights. This gives you added flexibility in choosing the EZ model that matches your needs based on battery configuration and size.
    Last edited by selfbuilt; 07-31-2009 at 07:36 PM.
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  2. #2
    Flashaholic* csshih's Avatar
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    nice review!

    I notice that all the new EZ lights use the EZ-900 die.

  3. #3

    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Thank You selfbuilt - Very Nice Review

    The 123 looks interesting. Sounds like there's quite a bit of room between the 2 modes. A quarter turn or less would seem enough.

    I like the screw tap on these lights. People who like to jig can make great use of the feature.

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    Flashaholic* DimeRazorback's Avatar
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Nice review!

    Thank you!


    ^^Click for my beamshots!!^^ My Flashlights

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    *Flashaholic* Burgess's Avatar
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Looks Great !


    Fine job, as always, SelfBuilt.




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    Flashaholic* Crenshaw's Avatar
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    dont really need another comment on how good your reviews.... :P

    so ill just say, WOW that CR2 is small. i might get that.

    Crenshaw

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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Excellent review. I love my EZ lights.
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    I hope there will be warm versions, too...

    Otherwise a very nice review...as always

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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    As always, thank you for a fine review!

    2 more nice lights from NiteCore, by the look of things, with some of the problems reported on previous ones now fixed.

    These 2 lights are likely to be compared to the Muysondt Nautilus and Aeon, as they share a number of common features which Muysondt users will immediately recognise. If they measure up to those, they'll be very good indeed.

    Moving this to the Reviews section.
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  10. #10
    Flashaholic veleno's Avatar
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Thanks for the usual great review!


  11. #11

    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Thanks for support everyone.

    Quote Originally Posted by thedeske View Post
    The 123 looks interesting. Sounds like there's quite a bit of room between the 2 modes. A quarter turn or less would seem enough.
    Yeah, it's typically pretty close to three-quarters of a turn. It also requires a fair amount of force to actually go into Hi - you won't be doing it by accident. But that resistance isn't necessarily a bad thing, as it reminds you not to overturn past Hi (and risk crushing a cell).

    Quote Originally Posted by Crenshaw View Post
    so ill just say, WOW that CR2 is small. i might get that.
    Quote Originally Posted by DM51 View Post
    These 2 lights are likely to be compared to the Muysondt Nautilus and Aeon, as they share a number of common features which Muysondt users will immediately recognise. If they measure up to those, they'll be very good indeed.
    I find the EZ123 is incredibly small for its battery source (and still takes protected RCR fine) - but the EZCR2 is indeed a bit of a stand-out. Its tiny size is remarkable, and the interface and build is clearly designed to compete with the more expensive custom Nautilus and Aeon. Sort of the poor-man's mass-produced Aeon, from all appearances.
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  12. #12
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    " No holster or body tube clip is included (or available, AFAIK)."

    Just wondering: I recently got myself a EX-10 clip to try (not on an ex-10 but on a D-Mini) and it looks it might fit the EZCR123, perhaps even the EZCR2 with a bit of bending ?

  13. #13

    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Quote Originally Posted by fareast View Post
    Just wondering: I recently got myself a EX-10 clip to try (not on an ex-10 but on a D-Mini) and it looks it might fit the EZCR123, perhaps even the EZCR2 with a bit of bending ?
    There's bound to be a variety of clips that may fit (with a little help ). I measured the diameter with a digital caliper, so the numbers in the review should help you to figure out what's a possible match. Actually, this is one of the rare occasions when my numbers match nearly exactly with the manufacturer's rated specs ...
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  14. #14

    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Great review and thanks for the picture with the LOD! I know it is different from person to person, but which one would you go with on a keychain?

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    Flashaholic* LA OZ's Avatar
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Another great review. Keep it up as I only read review coming from you.

  16. #16

    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Quote Originally Posted by Torpedo Vegas View Post
    Great review and thanks for the picture with the LOD! I know it is different from person to person, but which one would you go with on a keychain?
    Tough to say - I think all three members of the family are potentially acceptable for keychain use (depending on the size of your keychain and how you carry it). But the EZCR2 is is particularly appealing for its smallest size.

    Quote Originally Posted by LA OZ View Post
    Another great review. Keep it up as I only read review coming from you.
    Thanks for the compliment, but there's plenty of other great reviews here and elsewhere . But it looks like I will be busy for while ... I've got 4 lights sitting on my desk in various stages of testing, and a few more I'm expecting later this month. Should be able to polish off a couple of them when I'm back in my office next week. Stay tuned for more ...
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  17. #17

    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Can anyone confirm whether or not the CR2 will run on 3.7V Li-ion's?

  18. #18
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Great review as always Selfbuilt.Keep up the good work.You make us Canadians proud.

  19. #19
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Quote Originally Posted by GTSECC View Post
    Can anyone confirm whether or not the CR2 will run on 3.7V Li-ion's?
    I tried mine on a RCR2, and it seemed to run fine. Current draw drops in accordance with the higher voltage compared to the primary cell. I haven't done any decent runtimes, however.
    The Phaser: A nice EDC with great throw; heat and runtime can be issues.

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  20. #20

    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Quote Originally Posted by Phaserburn View Post
    I tried mine on a RCR2, and it seemed to run fine. Current draw drops in accordance with the higher voltage compared to the primary cell. I haven't done any decent runtimes, however.
    Thanks for the info Phaserburn ... I don't have any RCR2 to test, so was unable to verify. NiteCore packaging doesn't say anything about Li-ion, but I presumed RCR2 would work fine since RCR/14500 work in the other two members of the family. I would expect a runtime trace to look similar to those lights (especially the EZAA on 14500) - higher initial output, direct-drive until the regulated level is reached.
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  21. #21

    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    You know I read this whole page (may have missed this) but can anyone confirm whether or not the EZ123 light can safely run on 3.7V Li-ion's?

    Thank & sorry if I missed the answer.

    openbolt

  22. #22
    Flashaholic* Phaserburn's Avatar
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Quote Originally Posted by openbolt1 View Post
    You know I read this whole page (may have missed this) but can anyone confirm whether or not the EZ123 light can safely run on 3.7V Li-ion's?

    Thank & sorry if I missed the answer.

    openbolt
    Yes, it can.
    The Phaser: A nice EDC with great throw; heat and runtime can be issues.

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  23. #23
    Flashaholic* strinq's Avatar
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Was wondering, how's the heatsinking?
    There were some complaints about the EZAA being too hot at max for extended periods. Is it the same for the 123 and CR2?
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  24. #24

    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Quote Originally Posted by strinq View Post
    Was wondering, how's the heatsinking?
    There were some complaints about the EZAA being too hot at max for extended periods. Is it the same for the 123 and CR2?
    I would say it's pretty similar. All members of the family do get hot quickly, especially if left in candle-mode on Hi. I personally don't recommend extended running at those sort of output levels in small form factor lights without some sort of cooling (e.g. fan, hand-holding, etc.).
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  25. #25
    Flashaholic* strinq's Avatar
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Thanks man.
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  26. #26
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Great review! I picked up an R2 EX10 and an EZ123 a week or so ago to give them a shot as my new primary EDC. The EZ123 stands out in one particular regard - the size. It is quite small for a 123 based light and is nearly the same size as a Peak McKinley with a key ring body. I used to look at my McKinley and wonder why all 123 lights were so much bigger on average given the small cell size. The EZ123 not only compares favorably to the McKinley but is as Selfbuilt shows a good bit smaller than the EX10, and is shorter and only a hair wider than a Peak Pacific on AA pocket body, and a Peak Kilimanjaro on a pocket body. The overall build quality is solid as well.

    But I have to admit at first I was a bit underwhelmed by a few things - I cleaned and lubed the threads with Magnalube and the threads do run smoothly. But if you're used to a CR2 Ion for example (or an Aeon/Nautilus as well - I'm assuming they are similar given the same designer) which is very easy to operate one handed, the EZ123 at least is not for me a light I can put into high with one hand. As Selfbuilt notes, it takes some force to get it to high. I've tried to figure out what causes this and I believe it is the foam donut. This issue has been discussed with the EZAA as well - but it seems like the foam donut is almost fully compressed before going to high, and it is of a denser material than I am used to in the Peaks, Arc AAA or CR2 Ion, so it takes more oomph to compress it as well. Either a thinner foam ring or a less dense material might have been a better choice. I'm still considering whether to leave it as is, trim it or remove it entirely.

    I have thought that the little spring loaded pogo stick in the CR2 Ion was a solid and reliable two stage mechanism - with a longer life span I'd think than the leaf spring type arrangements. The EZ123 achieves a similar result with just a spring and it works fine, and given the price difference is an expected difference in terms of design and manufacturing cost, but it does not look as robust long term. And my sample does take roughly 3/4 of a turn to go from low to high, but this is pretty consistent with my CR2 Ion and from what I recall, the McGizmo lights have roughly the same distance stock (at least the Lunasol 27 I handled in a passaround did as best I remember it).

    The levels seem pretty well chosen - the low is a solid daily task level and high is scorching. Given the relative "burst" nature of high on such a small light - I agree with the slightly brighter low than many (myself included) tend to favor. It is a balanced level. I need to do some comparisons but it seems roughly as bright as my Fenix L1T v2.0 on low, and as a Peak Pacific Lux3 high power on a CR2 cell. But those aren't terribly helpful lights since they aren't widely owned - I'll see how it compares to my Novatac, for example.

    I have to admit at first I was a bit disappointed, expecting the butter smooth Ion operation in a 123 based light. It does not have that butter smooth operation, but it is not rough really, it is just a different feel. As I've lived with it, I've come to like it more and it may well replace the CR2 based lights as my EDC (I am trying to consolidate battery sizes, just a bit at least to 123 for EDC use).

    I do miss the low low of a 3 stage (or 4 in the case of the Novatac) light - I use the lowest setting on my Novatac and the EX10 quite a bit around the house at night ... but if you only have two stages these seem like good ones for general task use.
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  27. #27

    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Quote Originally Posted by Gatsby View Post
    But if you're used to a CR2 Ion for example (or an Aeon/Nautilus as well - I'm assuming they are similar given the same designer) which is very easy to operate one handed, the EZ123 at least is not for me a light I can put into high with one hand. As Selfbuilt notes, it takes some force to get it to high. I've tried to figure out what causes this and I believe it is the foam donut. This issue has been discussed with the EZAA as well - but it seems like the foam donut is almost fully compressed before going to high, and it is of a denser material than I am used to in the Peaks, Arc AAA or CR2 Ion, so it takes more oomph to compress it as well. Either a thinner foam ring or a less dense material might have been a better choice. I'm still considering whether to leave it as is, trim it or remove it entirely.
    Thanks for the detailed user assessment - I don't have the other lights in question, so it's good to hear your thoughts on how they compare (especially the Aeon and such).

    On the issue of the stiffness in getting to Hi, I recall some discussion in my EZAA review thread that shortening the spring in the head made a difference.
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  28. #28
    Flashaholic* Nake's Avatar
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    I agree with the foam being too compressed. I took about 1mm of foam off with a razor blade and now it works easier. I read where someone beveled the foam in a similar way and operation was better.

  29. #29
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    Thanks for the Fantastic review as always Selfbuilt. I resisted as long as I could... but finally had to pick one of these up.
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  30. #30
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    Default Re: NiteCore EZ123 and EZCR2 Reviews: RUNTIMES, BEAMSHOTS, and more!

    EZ123- It doesn't list runtimes or outputs for rechargeables on the 4sevens website and posts this warning:
    Caution:

    • Do not use batteries that exceed 3 volts, as they may permanently damage the flashlight.

    Does this = no RCR123?

    Also the manual makes no mention of rechargeables. Have the specs changed since it was introduced?

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