RofisLight        
Results 1 to 6 of 6

Thread: Redilast Protected 18650 (2600mAh and 2900mAh) Mini-Review: RUNTIMES

  1. #1

    Wink2 Redilast Protected 18650 (2600mAh and 2900mAh) Mini-Review: RUNTIMES

    I have recently been sent a number of Redilast batteries for review. I know this brand is are already well-known here, but here is my quick mini-review of the 2600mAh and 2900mAh protected 18650 cells


    (sorry for the reflections, those are shiny labels! )

    Note that this mini-review will be done somewhat in the style of my Quick CR123A and AA Battery Shoot-out Comparison, and will include a number of protected 18650 cells in my possession. Most of the other batteries will likely be familiar to CPFers. Also note that I am not going to be cutting up any batteries here – I’m simply going to compare the apparent capacities in my standard test bed.

    To start, the batteries:



    From left to right, AW 2200mAh, AW 2600mAH, Redilast 2600mAh, Redilast 2900mAh, AW 2600mAh, AW 2200mAh.

    The purpose of the above is to show you the height and button-top differences of the Redilast compared to the standard AW cells. The older AW 2200mAh cells (which have the classic button-top) are shorter than these newer high-capacity cells. The AW 2600mAh cells have flat-tops that don’t project beyond the wrapping, although they do have points on the bottom to help with contact when in series.

    In contrast, both the Redilast 2600mAh and 2900mAh have a raised top, although this is wider than the classic button-top. The 2900mAh seems a touch taller as well (scroll down for actual measures).

    Here are some additional cells to be used in the runtime tests:


    From left to right, AW 2200mAh, AW 2600mAh, Tenergy 2600mAh, Eagletac 2400mAh, 4GREER 2400mAh.

    Note that the rated capacities are directly from the manufacturer, as printed on the batteries.

    And now the average weights and heights of all of the above:
    • AW 18650 2200mAh button-top – 45.9g, 67.4mm
    • AW 18650 2600mAh flat-top – 46.4g, 67.8mm
    • Tenergy 2600mAh button-top – 45.8g, 67.2mm
    • EagleTac 2400mAh button-top – 46.7g, 68.8mm
    • 4GREER 2400mAh button-top - 48.6g, 69.2mm
    • Redilast 2600mAh raised-top – 47.2g, 68.5mm
    • Redilast 2900mAh raised-top – 45.7g, 68.9mm

    Interestingly, the Redilast 2900mAh are lighter than I would have expected.

    Testing Method:

    My standard test bed for all Li-ion batteries is the original JetBeam IBS circuit. I possess the first-generation IBS circuit in all three body types (Jet-I, Jet-II and Jet-III), which allows me to similarly compare 14500, 16340 (RCR), 14670, 17670, and 18650. I like using this circuit for comparison testing because it is optimized for 3.7V Li-ion, reasonably heavily driven at max output, and runs fully-regulated.

    To test batteries, I charge up each new battery I receive on my Pila and then run on the appropriate IBS light at 100% until the protection circuit kicks in. This gives me an easy way to estimate the capacity of new cells as they arrive (as well as periodically monitor their health over time). FYI, in my standard reviews, I only use “typically” performing AW 18650 2200mAh button-top cells (i.e. cells that perform around the average of all samples I have bought).

    Results:



    First off, notice that there is generally good consistency among multiple samples from a given manufacturer (i.e. not too much variability). Also, cells with higher rated capacities typically do better, as you would expect.

    The Redilast batteries were remarkably consistent among the 3 samples for each class. The 2600mAh cells were very good performers – all 3 samples slightly outlasted my 2 AW 2600mAh cells, as well my 4GREER 2400mAh cells (which perform closer to 2600mAh).

    The Redilast 2900mAh cells definitely pulled away from the pack. As with the Redilast 2600mAh cells, the runtime performance was excellent.

    Again, I don’t know what the internal construction of the cells are like, but my Redilast samples seem of consistent and good quality in their external presentation (i.e. no bulging contact surfaces, centered raised-tops, etc.). I also note that a useful summary sheet on Li-ion safety and function was included with the cells.

    Hope you found the runtime comparisons useful!



    ----

    Redilast batteries were provided by Redilast/Tactical HID for review.
    Last edited by selfbuilt; 03-11-2011 at 08:15 AM.

  2. #2

    Default Re: Redilast Protected 18650 (2600mAh and 2900mAh) Mini-Review: RUNTIMES

    Written by jasonck08 on 01-26-2011 02:33 PM GMT

    Nice tests. Also its nice to see the batteries tested in a real world application with a light with proper regulation.
    Written by jasonck08 on 01-26-2011 02:33 PM GMT

    Nice tests. Also its nice to see the batteries tested in a real world application with a light with proper regulation.
    Written by selfbuilt on 01-26-2011 03:00 PM GMT

    Quote Originally Posted by HKJ
    18650 reviews are the hot topic today! I have also posted a comparison of 18650 cells, but more technical.

    I wonder if the cells where you have different capacity, within the same type, are older cells, i.e. you have used them for some months?
    Well, nice round-up HKJ. Great work! Well, nice round-up HKJ. Great work!

    In my case, all the runtimes were done at the time of arrival of the batteries, and so were all brand new with no cycles on them yet. Runtimes were done ~2.5 years ago for the AW 2200mAh and Tenergy tests, ~1.5 years ago for the Eagletac 2400mAh tests, ~1 year ago for the AW 2600mAh tests, and ~0.5 years ago for the 4GREER ones.

    I put every battery I receive through this test upon arrival. I continue to purchase AW 2200mAh for my runtimes, and I can tell you runtimes for the new ones are consistent with the old ones reported here (although in recent months, they tend to be at the low end of the natural variance shown above).

    The IBS lights in question get no other use except for runtime testing of new cells as they arrive. The performance of the lights seems stable over time so far.

    As a side note, nice to see the internal calibration of my lightbox has remained consistent over that time.
    Full list of all my reviews: flashlightreviews.ca. Latest hobby: whiskyanalysis.com. Latest flashlight review: Thrunite TN42.
    Gratefully accepting donations to my battery fund.

  3. #3

    Default Re: Redilast Protected 18650 (2600mAh and 2900mAh) Mini-Review: RUNTIMES

    Written by etc on 01-26-2011 04:40 PM GMT

    Thanks for this review which quantifies the performance difference well..
    Written by tandem on 01-26-2011 07:51 PM GMT

    selfbuilt, do you know what the tailcap current of the IBS light used is? Sure it'll differ a little cell to cell but it'd be useful for doing rough thumb-suck estimates on lights with similar current draw.
    Written by selfbuilt on 01-27-2011 07:43 AM GMT

    Initial tailcap current on my Jet-III ST IBS jumps around between 1.32A-1.35A over the first 5-10secs or so (and is fairly consistent across various cells). Initial tailcap current on my Jet-III ST IBS jumps around between 1.32A-1.35A over the first 5-10secs or so (and is fairly consistent across various cells).
    Full list of all my reviews: flashlightreviews.ca. Latest hobby: whiskyanalysis.com. Latest flashlight review: Thrunite TN42.
    Gratefully accepting donations to my battery fund.

  4. #4

    Default Re: Redilast Protected 18650 (2600mAh and 2900mAh) Mini-Review: RUNTIMES

    Written by tandem on 01-27-2011 08:53 AM GMT

    Thanks for that info, that helps put the cell runtime chart in better perspective. Most of my 1x18650 lights in the ~ 250 OTF lumen range consume 800 ~ 1000 mA and the harder driven XR-E and XP-G I have pull around 1.1 - 1.3A.

    At ~ 1.3A some of the weaker performing cells (those that fall over harder at higher rates) probably aren't being tripped up too much, but a little, which is entirely reasonable. That IBS light was a good choice way back when you first started doing this!
    Full list of all my reviews: flashlightreviews.ca. Latest hobby: whiskyanalysis.com. Latest flashlight review: Thrunite TN42.
    Gratefully accepting donations to my battery fund.

  5. #5

    Default Re: Redilast Protected 18650 (2600mAh and 2900mAh) Mini-Review: RUNTIMES

    The main review post has been updated with the final review text.

    The thread discussions for the last few months have been fully restored from the search engine cache data (thank you tandem!).

    Please carry on!
    Full list of all my reviews: flashlightreviews.ca. Latest hobby: whiskyanalysis.com. Latest flashlight review: Thrunite TN42.
    Gratefully accepting donations to my battery fund.

  6. #6

    Default Re: Redilast Protected 18650 (2600mAh and 2900mAh) Mini-Review: RUNTIMES

    I have a Fenix TA21 & a EagleTec T100C2. What batteries do you recommend for these flashlights? And, how do I order them from you?

    Thanks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •