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Thread: Lumintop TD15X Update - Cool & Neutral white, new dedicated battery tubes, RUNTIMES+

  1. #1

    Wink2 Lumintop TD15X Update - Cool & Neutral white, new dedicated battery tubes, RUNTIMES+



    This review is intended as a companion piece/update to my original Lumintop TD15X review, posted earlier this year.

    There have been a few build and circuit changes since that early review sample, including the option for a Neutral White emitter. Lumintop has also developed dedicated battery tube options for multiple cell configurations, which I will also be showcasing here.

    To begin, the "official" specs for this light haven't changed much. I've bolded below the updated information from my original review.

    Manufacturer's Specifications:
    • LED: CREE XM-L T6 LED Cool White (Neutral White now available)
    • Max Output / Runtime: 720 lumens / 1 hour (2x18650), 580 lumens (1x18650)
    • Middle output / Runtime: 200 lumens / 4 hours
    • Low output / Runtime: 20 lumens / 35 hours
    • Length: 5.83 inches (148mm), Bezel Diameter 1.50 inches (38mm), Body Diameter 1 inches (25.4mm)
    • Weight: 5.3 ounces (150g)
    • Light Mode: Low-Middle-High-Strobe
    • Waterproof IPX-8
    • Battery Type: 2x CR123A batteries, 2x RCR/16340, 1x Li-ion 18650 or 1x 17670 battery
    • Battery Type with 1 x Extension Tube: 3x CR123A batteries, 3x RCR/16340
    • Battery Type with 2 x Extension Tube: 4x CR123A , 2x Li-ion 18650 or 2x 17670 batteries
    • Precision reflector creates smooth, optimized beam
    • Coated tempered window resists impact, 99% Transmission of light, protect the reflector and LED
    • Four output mode by loosen and tighten the bezel to switch - lowest for longest runtime, highest for maximum light, and strobe for tactical
    • High-strength aerospace aluminum body, Mil-Spec hard-anodized for extreme durability
    • Tactical tailcap switch - press for momentary-on, click for constant-on
    • High ductility steel clip provides multiple carry options
    • Anti-reverse protection circuit
    • Weatherproof O-Ring sealed that keep moisture, dust and dirt outside of your flashlight
    • Wear resistant square thread
    • Stainless steel crenelated Strike Bezel and scalloped tailcap provide further defensive options.
    • Intelligent memory circuitry memorizes last mode when activating the light.
    • Combat Ring with anti-rolling design for secure hold in all conditions
    • Included accessories: holster, lanyard, body clip, two spare o-rings, and a rubber switch boot.
    • Estimated MSRP ~$99

    I note the official support for 2xRCR now. Clearly, the circuit could always handle the voltage (i.e. it takes 2x18650 after all). So is there a reason 2xRCR is now officially supported? Scroll on ...



    Basic packaging hasn't changed much either – the light comes with a removable lanyard ring and clip (attached), and includes one battery tube extender (CR123A length), wrist lanyard, decent quality holster, spare o-rings and boot cap, and replacement cover for the attached pocket clip.

    So what has changed in the overall build? Aside from the option for a Neutral White emitter, the only change I noticed is in the contact plate in the head:



    Left is the new TD15X (with a red circuit board and spring on the positive contact), right is the original TD15X (with a small raised contact point).

    Otherwise, the build is unchanged, right down to the screw threading. You can easily mix-and-match parts from early purchases (e.g. extension tubes). Please see my original TD15X review for a detailed discussion of the build, or the video overview presented later in this review.

    Something new that Lumintop has sent along are dedicated battery tubes for 2x18650, 3x18650 and 4x18650. This latter size is a surprise to me, as I didn't think the circuit support that many cells.

    To date, they have only released these in the Asian market, but I understand they are interested to see if there is significant interest in the Western market as well. So speak up if you would like to see these offered at a vendor near you …



    Shown above is the 2x18650 body tube, compared to two extenders on the regular body tube.

    One nice feature is not having to worry about getting multiple extenders. I found the 2x18650 and 3x18650 worked well with all my various length cells. I haven't tried running the light on the 4x18650 battery tube.




    Screw threading is of course exactly the same on these body tube replacements (i.e., you use the existing head and tailcap). Note the lack of anodizing on the tailcap end of the tubes. You should still be ok for lock-out given the anodizing within the tailcap, though.

    One thing these dedicated 2x, 3x, and 4x battery tubes lack is a clip or grip ring attachment point. While they have some ridge detail to help with grip, they lack dedicated knurling.

    User interface is unchanged on the TD15X. For a more overview of the build and user interface, please see my video overview:



    Video was recorded in 480p, but YouTube defaults to 360p. Once the video is running, you can click on the 360p icon in the lower right-hand corner, and select the higher 480p option, or even run full-screen.

    PWM/Strobe

    As before, no sign of PWM on the TD15X – I believe the light is current-controlled for its Lo/Med modes.



    Strobe is unchanged from previous, 9.8 Hz on this sample.

    Beamshots:

    First, here's a comparison of the original TD15 (XP-G R5) and Cool White TD15X from my original review:


    TD-15 (XP-G R5) on the left, TD-15X (XM-L) on the right.

    The new samples don't look any different, but here are a few pics of the Neutral White emitter version:



    Below I'm showing the new Cool White sample on 1x18650 ("TD15X #2"), followed by the Neutral White sample on 2x18650 ("TD15-X Neutral"), on max output, on 1x18650. Lights are about ~0.75 meter from a white wall (with the camera ~1.25 meters back from the wall).









    Sorry, I think I had the camera on automatic white balance (at least for the cool white shots), so tint differences are minimized. In real life, both the Cool White and Neutral White versions are comparable to other lights using these designations.

    Scroll down to my summary tables and runtimes graphs for more info.

    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, except for any extended run Lo/Min modes (i.e. >12 hours) which are done without cooling.

    I have recently devised a method for converting my lightbox relative output values (ROV) to estimated Lumens. See my How to convert Selfbuilt's Lighbox values to Lumens thread for more info.

    Throw/Output Summary Chart:

    Effective November 2010, I have revised my summary tables to match with the current ANSI FL-1 standard for flashlight testing. Please see http://www.sliderule.ca/FL1.htm for a description of the terms used in these tables.







    I find my more recent Cool White version is not driven quite as hard on 2x battery sources as my original sample, but is otherwise pretty comparable. The Neutral white version has slightly lower output and throw, as expected.

    Output/Runtime Comparison:



    On 1x18650, the newer TD15X Cool White seems largely unchanged from my earlier TD15X Cool White.





    On 2x and 3x battery sources, there has been a clear change from the original build – the output now steps down after 5 mins runtime on max. This gives considerably longer runtimes now.

    Potential Issues

    In my original review of the TD15X, I expressed concern about the sustained drive levels on 2x and 3x battery sources (and the concomitant heat produced). With the new step-down feature at 5 mins, these concerns are largely assuaged.

    User interface in unchanged, and strobe is still located on the main sequence with the Lo, Med, Hi modes.

    New dedicated 2x, 3x and 4x 18650 battery tubes have only minor ridge detail to help with grip (no clip or grip ring attachment point).

    Preliminary Observations

    The TD15X has been a popular model for Lumintop. It was one of the first dedicated thrower XP-G lights (in its original TD15 form) to jump on the XM-L bandwagon.

    I am glad to see the circuit update with the step-down feature after 5 mins on 2x and higher battery sources. I was always concerned about sustained drive levels (and heat) on the original model, and this is a thoughtful safety precaution. As a bonus, it also gives you much longer runtimes. This presumably also explains the official support of 2xRCR now - the drive currents are not as heavy on max.

    The option for a Neutral White emitter is something that I am sure many will appreciated here.

    The new dedicated battery tubes are an interesting option. I am not sure how well multiple extenders work on the standard body - tolerances can get tricky as you go to greater number of cells (i.e. need 2 extenders for 2x18650, 4 extenders for 3x18650, etc). I had no issue with any of my 18650 cells on the 2x and 3x dedicated battery tubes.

    AFAIK, Lumintop has only released these dedicated battery tubes for sale in China so far. Feel free to let them know if you would like to see them available in the rest of the world.

    For more information and greater discussion of the TD15X, please see my original review here.


    ----

    Lumintop TD15X and battery tube samples provided by Lumintop for review.
    Full list of all my reviews: flashlightreviews.ca. Outdoor 100-yard Beamshots 2011. Latest: Fenix LD60.
    Gratefully accepting donations to my battery fund.

  2. #2

    Default Re: Lumintop TD15X Update - Cool & Neutral white, new dedicated battery tubes, RUNTIM

    Selfbuilt,

    Thanks for the update. Do you know if there any way to determine if one's TD15x has the step-down feature based on visual examination? I have a NW TD15x and it has the red circuit board like the "August" sample you show but the small raised contact point of the older version. Just wondering if Lumintop gave you any info, or if it could be presumed that if it doesn't have the spring on the lamp side, then it probably doesn't have the step-down. Seems a shame that it is so difficult to determine differences in circuit design that are rolled into ongoing production without test equipment.

    -Euthymic

  3. #3
    Flashaholic* candle lamp's Avatar
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    Default Re: Lumintop TD15X Update - Cool & Neutral white, new dedicated battery tubes, RUNTIM

    Excellent review! Thanks for your time. Selfbuilt.

  4. #4

    Default Re: Lumintop TD15X Update - Cool & Neutral white, new dedicated battery tubes, RUNTIM

    Quote Originally Posted by euthymic View Post
    Do you know if there any way to determine if one's TD15x has the step-down feature based on visual examination? ... Seems a shame that it is so difficult to determine differences in circuit design that are rolled into ongoing production without test equipment.
    No, where is no way to tell externally. I've tested physically identical versions of the P16X (where they sell both circuits as options).

    But there's an easy to tell by using a stop-watch (or even a regular watch). The step down occurs at exactly the 5 min mark on my samples. All you need to do is start the timer (or pick a conveninent time to start), and begin watching the light output as the you near the 5 min mark. You will visually notice the step-down when it occurs, if it is there.

    Oh, and
    Full list of all my reviews: flashlightreviews.ca. Outdoor 100-yard Beamshots 2011. Latest: Fenix LD60.
    Gratefully accepting donations to my battery fund.

  5. #5

    Default Re: Lumintop TD15X Update - Cool & Neutral white, new dedicated battery tubes, RUNTIM

    No problem using extenders for 3xcr123 or 2x18650 (AW 2600).

    My one complaint: Light needs a 4th level. The step from low to medium is very large and an intermediate level would help. A better spacing would result: Low, med, high, turbo.

    Brightnorm

  6. #6
    Enlightened
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    Default Re: Lumintop TD15X Update - Cool & Neutral white, new dedicated battery tubes, RUNTIM

    I know...old thread.
    I don't see the long tubes offered on their site...did they ever get them out past Asia?
    also, any info on their new TD15X SM-L2?

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