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Thread: New H53c AA Headlamp Neutral White High CRI!

  1. #481

    Default Re: New H53c AA Headlamp Neutral White High CRI!

    Quote Originally Posted by gogdog View Post
    To recap...if I'm not looking at H1 due to the curve, the h53c runtimes are very close to the h53Fw runtimes. Lumens, and thus, lumen hours, are lower on the h53c due to the higher CRI.
    Yeah, that makes sense--it is very unlikely that ZL change the driver circuit when they move from one emitter to another. So the circuit is still feeding the same current to the emitter in both lights, and that's what controls run-time. The different emitters then convert the same amount of current into different amounts of lumens, because of their different temperature and CRI profiles, which is what controls output.

    I am still unhappy that your numbers are coming in so much lower than ZL's posted specs. And the fact that you got consistent numbers with two different models makes it much less likely that either unit is bad.

    I think ZL has some 'splaining to do....

  2. #482

    Default Re: New H53c AA Headlamp Neutral White High CRI!

    Quote Originally Posted by Keitho View Post
    One theory to only partially explain lumen measurement differences, at least on h1: ZL might use the ansi standard, which I think is the lumen measurement at 30 seconds or a minute.

    Another: the ZL setup might be very warm, or downright hot, making the cells perform better.

    Another: ZL cherry picks good new cells, and tops them off to the very high end of the spec.

    The most obvious is that ZL has over inflated the specs on this light. It would be the most flagarent inflation of specs I've heard from ZL, so I'm definitely going to reserve judgement until some other samples are tested with other setups.

    Thanks for all the work, gogdog!
    Another possibility: perhaps the Eneloop Pro can produce higher output as well as greater runtime. It is designed for higher discharge rates, correct? This would not explain the M1 discrepancy, however...

  3. #483

    Default Re: New H53c AA Headlamp Neutral White High CRI!

    I'm not aware that the eneloop Pros are designed for higher discharge rates...I thought the only difference was capacity. But if I'm wrong, someone please chime in.

    Here is something interesting though....I then started testing my Fenix 1600mAh 1.5V li-ion microusb rechargeable battery (arb-l14-1600u).

    I did a test on H3...here is the runtime chart ->



    Compared to the original Eneloop test (I actually retested it on a different eneloop and got the exact same results as before)


    Technically the 1600mAh 1.5V battery should have just as much stored energy as the eneloop (2000mAh 1.2V).

    The eneloop gave me 90 minutes before a slow dim "dying" light, which I'm not sure how long it would last for before eventually dying (I didn't test till it reached moonlight mode). The Fenix li-ion gave me 111minutes, before shutting off (probably due to the overdischarge circuit on the battery). Same lumen values between the tests. Manufacturer claimed runtime is 1hr48min (108min) with a standard eneloop, so 111 minutes is actually slightly over spec at 3% overspec. Of course, there is an abrupt cutoff though.

    I am pretty impressed by the Fenix battery....its lighter than an eneloop and..looks like gives me good performance. I will note that you can not run H1 on the Fenix but the other modes seem to work fine.

  4. #484

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    Default Re: New H53c AA Headlamp Neutral White High CRI!

    Quote Originally Posted by lampeDépêche View Post
    Thanks for all of your work on this.

    An eneloop that only contains 1800mah might explain lower run-times, but it cannot explain low lumen outputs.
    No offence intended to gogdog and I too thank him for his work on this but...

    He is using a cardboard box with a cell phone stuck in it. I would take his lumen measurements with a grain of salt.

    As for the runtimes, he is using a different cell(who knows how old it is)and doing a calculation to account for the capacity difference. This is not a very accurate method. One needs to use brand new Eneloop Pro's to do accurate comparative testing.

    It should also be noted that all samples will likely be slightly different due to small variations in particular electronic components and emitters. Eneloops will also vary both in capacity and resistance.
    Last edited by Tachead; 01-17-2018 at 05:56 PM.

  5. #485

    Default Re: New H53c AA Headlamp Neutral White High CRI!

    He is using a cardboard box with a cell phone stuck in it. I would take his lumen measurements with a grain of salt.
    You and me both! I mean...I've admitted several times that my lightbox is crappy, and I can't explain the lower lumens. I normalized it based off of the lumintop hl aaa's review...which...who knows how he came up with his lumens either. I can say though, that at a particular light level (lumintop HI 120Lm spec vs h53F2 H4 119Lm spec), the lumintop appears brighter to my eye, which would support the lightbox values. The tints are different though, so one might "appear" brighter (the cool white of the lumintop). I don't know.

    I would LOVE if someone could confirm lumen values...ideally if they had the lumintop hl aaa too.

    As for the runtimes, he is using a different cell(who knows how old it is)and doing a calculation to account for the capacity difference. This is not a very accurate method. One needs to use brand new Eneloop Pro's to do accurate comparative testing.
    You know...thats not a bad idea. I don't have any eneloop Pros....I think I'll just have to order some. I confirmed capacity via my la crosse charger, but.....not resistance. I didn't think of the older battery having higher resistance, which could certainly be throwing stuff off.

    But 30% off runtime on M1? I don't think resistance is going to cut it.

  6. #486
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    Default Re: New H53c AA Headlamp Neutral White High CRI!

    If you look at the H52w vs. the H53w:

    H52w @ 25lm for 12hrs*(2.55/2) =15.3hrs [corrected for using an Eneloop pro)
    H53w @ 30lm for 21 hrs

    I think the specs are overestimated, it's just something we have to accept. I posted a thread about this on here a few months ago, and with the help of some other members, we all found the same thing with our lights.

    Who cares if they're overstated? They still come out more efficient than other lights when tested.

  7. #487
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    Default Re: New H53c AA Headlamp Neutral White High CRI!

    Quote Originally Posted by likethevegetable View Post
    If you look at the H52w vs. the H53w:

    H52w @ 25lm for 12hrs*(2.55/2) =15.3hrs [corrected for using an Eneloop pro)
    H53w @ 30lm for 21 hrs

    I think the specs are overestimated, it's just something we have to accept. I posted a thread about this on here a few months ago, and with the help of some other members, we all found the same thing with our lights.

    Who cares if they're overstated? They still come out more efficient than other lights when tested.
    Here is the other thread: http://www.candlepowerforums.com/vb/...fied&highlight

    There is a table with 5 tested runtimes, and a link to another thread on Taschenlampenforum (I believe our friends in Germany)

  8. #488

    Default Re: New H53c AA Headlamp Neutral White High CRI!

    Well dang it.....I wish I saw that thread earlier....now I realize that I just duplicated a bunch of work that was already corroborated in that other thread. Its too late to cancel my amazon order for the eneloop Pros..though..I did buy amazonbasics high capacity batteries which I hope are truly rebranded ones, that are at least half the price.

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