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Thread: LiIon 18650 battery comparison

  1. #1
    *Flashaholic* HKJ's Avatar
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    Default LiIon 18650 battery comparison

    LiIon 18650 battery comparison

    I have made a new battery test: 18650 battery test 2011, it is also on cpf
    A 2012 test can be found here

    The name 18650 means that the battery has a diameter of 18mm and is 65mm long, but when a protection circuit is added the battery will be a few mm longer. How much longer will depend on the actual protection circuit and how it is mounted.



    These graphs show the size of the batteries. The length is from top of battery to bottom of battery, measured on the most protruding parts. With the diameter I have tried finding the largest diameter (The batteries are not completly circular).
    Some of the batteries are flat top, what this means is explained here: Battery, button or flat top

    For more information about how a protected battery is build see The Anatomy of a Protected Battery.



    This graph shows the measured capacity for each battery with different loads. One thing to note is that many manufactures overstates their capacity.
    Note: I have used multiple batteries from each manufacturer and multiple chargers, i.e. the different runs for the same type battery might not be directly comparable (As in same battery and exactly same charge condition).
    Note: TrustFire TR2400 (gray) is very variable in capacity.

    On the graph, the black trace is 0.3A, red is 1A and green is 3A discharge current.



    AW 2200 (Black)





    This battery has protection.
    Size: diameter: 18.4mm, length: 67.4mm
    The minus pole has a metal protection.
    Source: AW, Sep 2009


    AW 2600 (Black)





    This battery has protection.
    This battery is a flat top battery and will only work in equipment with a raised plus pole. Two batteries placed in series will connect (Not all flat tops will do this).
    Size: diameter: 18.6mm, length: 67.7mm
    The minus pole has a metal protection.
    Source: AW, Nov 2009



    AW IMR1600 (Red)





    This battery uses IMR (LiMn) chemistry and does not have or need a protection circuit.
    Size: diameter: 18.3mm, length: 65mm
    The minus pole has a metal protection.
    Source: AW, 2009

    SolarForce 2400 (White)







    This battery has protection.
    Size: diameter: 18.7mm (Mostly 18.4, but it has a bump), length: 68.3mm
    Source: SBFL, Feb 2010


    Soshine 2800 (Black)







    This battery has protection.
    Size: diameter: 18.4mm, length: 68.8mm
    The minus pole is the copper on the protection pcb.
    Source: DX:28678, Jan 2010



    Tenergy 2600 (Cyan)







    This battery has protection.
    This battery is a flat top battery and will only work in equipment with a raised plus pole.
    Size: diameter: 18.4mm, length: 66.7mm
    The minus pole is the copper on the protection pcb.
    Source: BJ, Jan 2010



    TrustFire TF2400 (black/red)







    This battery has protection.
    Size: diameter: 18.3mm, length: 68mm
    The minus pole is the copper on the protection pcb.
    Source: DX:20392, Jan 2010



    TrustFire TR2400 (Gray)







    This battery is either one of the good or one of the worst batteries, depending on how lucky you are. The blue trace is a 1 amp trace of a bad battery.

    This battery has protection.
    Size: diameter: 18.5mm, length: 67.6mm
    Source: DX:5776, Jan 2010



    TrustFire TR2500 (Blue)






    This battery has protection.
    Size: diameter: 18.6mm, length: 68.9mm
    The minus pole has a metal protection.
    Source: DX:5790, Dec 2009



    UltraFire BRC3000 (gray/red)







    This battery has protection.
    Size: diameter: 18.6mm, length: 68.0mm
    The minus pole is the copper on the protection pcb.
    Source: DX:21474, mar 2010



    UltraFire LC2400 (Gray)







    This battery has protection.
    Size: diameter: 18.5mm, length: 68.9mm
    The minus pole is the copper on the protection pcb.
    Source: DX:19624, Jan 2010



    UltraFire XSL2600 (Red)







    This battery has protection.
    Size: diameter: 18.6mm, length: 69.1mm
    The minus pole is the copper on the protection pcb.
    Source: DX:28677, Dec 2009



    UniqueFire LC2400 (Blue)







    This battery has protection.
    Size: diameter: 18.5mm, length: 68.8mm
    The minus pole has a metal protection.
    Source: DX:29031, Dec 2009



    Xtar 2200 (Blue/green)







    Note: These batteries are named 18700, not 18650.
    This battery has protection.
    Size: diameter: 18.5mm, length: 69.5mm
    The minus pole has a metal protection.
    Source: Xtar, Dec 2009

    Notes
    Source:
    DX: Dealextreme
    BJ: BatteryJunction
    AW: AW on cpf
    SBFL: SBFlashlights
    Last edited by HKJ; 03-18-2012 at 09:14 AM.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  2. #2
    Flashaholic* Black Rose's Avatar
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    Default Re: LiIon 18650 battery comparison

    Nice work HKJ

  3. #3
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    Default Re: LiIon 18650 battery comparison

    Hello HKJ,

    Excellent work.

    It looks like the UltraFire XSL2600 cells reach their "nominal" voltage under a 0.3 amp load where the AW 2600 cells are able to handle a 1 amp load and maintain "nominal" voltage.

    It looks like all the cells are struggling at loads a little over 1C, however with the IMR1600 cells the load was closer to 2C and they look pretty good.

    Tom
    Behind every Great man there's always a woman rolling her eyes...

    Most batteries don't die - they are tortured to near death, then murdered...

  4. #4
    Enlightened
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    Default Re: LiIon 18650 battery comparison

    Thankyou, very interesting!!

  5. #5
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    Default Re: LiIon 18650 battery comparison

    Very nice of you HKJ

    Its good to have both dimensions and capacity in the same thread.

    Thanks//Anders

  6. #6
    Flashaholic* old4570's Avatar
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    Default Re: LiIon 18650 battery comparison

    Good job .

  7. #7

    Default Re: LiIon 18650 battery comparison

    Awesome post HKJ and timely too as I'm on the hunt for some new 18650's.

    Might you be doing one on 123-sized batteries in the future?

    Cheers!,
    Tim

  8. #8
    *Flashaholic* HKJ's Avatar
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    Default Re: LiIon 18650 battery comparison

    Quote Originally Posted by turboBB View Post
    Might you be doing one on 123-sized batteries in the future?
    I have not decided that yet. But I will be extending this test here with some more 18650 batteries.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  9. #9
    Flashaholic Tohuwabohu's Avatar
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    Default Re: LiIon 18650 battery comparison

    Thanks for yor work HKJ.

    DX sells two different versions of the UltraFire XSL 2600mAh batteries.
    I'm quite sure you tested the cheaper and longer version (sku.28677).
    sku.26247 is shorter, has a higher capacity and a higher voltage under load.
    I posted results for both versions here in the German Messerforum.net. (Ultrafire 2600mAh = sku.26247, UF 2600mAh lang = sku.28677).

  10. #10
    Flashaholic* Conte's Avatar
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    Default Re: LiIon 18650 battery comparison

    Uniquefire ? Lol.

    That's quite the oxymoron, no ?

  11. #11
    *Flashaholic* HKJ's Avatar
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    Default Re: LiIon 18650 battery comparison

    Quote Originally Posted by Tohuwabohu View Post
    Thanks for yor work HKJ.

    DX sells two different versions of the UltraFire XSL 2600mAh batteries.
    I'm quite sure you tested the cheaper and longer version (sku.28677).
    sku.26247 is shorter, has a higher capacity and a higher voltage under load.
    I posted results for both versions here in the German Messerforum.net. (Ultrafire 2600mAh = sku.26247, UF 2600mAh lang = sku.28677).
    Interesting, two different batteries with exactly the same wrapping but different specifications.
    As you "guessed" it is sku 28678 that I have tested.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  12. #12
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    Default Re: LiIon 18650 battery comparison

    Anyone know anything about these?
    http://www.batteryjunction.com/ultrafire-brc-18650.html

    George

  13. #13

    Default Re: LiIon 18650 battery comparison

    I'd be interested in seeing what you find for DX SKU 20392; I've got a couple that seem to do pretty well but am not sure how they compare.

  14. #14
    *Flashaholic* HKJ's Avatar
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    Default Re: LiIon 18650 battery comparison

    Quote Originally Posted by guiri View Post
    I am going to test the DX model of the same type, if DX decides to ship it (I ordered it last year).

    Quote Originally Posted by bandersnatch View Post
    I'd be interested in seeing what you find for DX SKU 20392; I've got a couple that seem to do pretty well but am not sure how they compare.
    I also have this battery on my list to test.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  15. #15
    Flashaholic The Dane's Avatar
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    Default Re: LiIon 18650 battery comparison

    Not to steal the thread but i tested some of the DX ones here:

    http://www.candlepowerforums.com/vb/...d.php?t=235472
    Dont go spoiling a perfectly good thread with too many facts.
    Henrik
    Creator of The Axe and the BigM*g and i'm sure more silly projects will follow

  16. #16
    Banned Lightcrazycanuck's Avatar
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    Default Re: LiIon 18650 battery comparison

    Quote Originally Posted by Black Rose View Post
    Nice work HKJ

    +1

  17. #17

    Default Re: LiIon 18650 battery comparison

    Hello Flashlight gurus,

    Sorry if I'm off topic a little here, but a quick question. I am having trouble grasping the concept of these 18650's, but I have extracted some out of a laptop battery pack and 1 of these is a red Sony(I think.) It is showing 3.88 volts and since I don't have a charger yet, is it possible to try this battery out in one of many flashlights that I have? I know the voltage is supposed to be between 3.6 and 4.2. As always, I respect the opinion and advice of CPF members and was wondering your thoughts on this. Thank you for your time and feedback.

  18. #18
    *Flashaholic* HKJ's Avatar
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    Default Re: LiIon 18650 battery comparison

    Quote Originally Posted by The Dane View Post
    Not to steal the thread but i tested some of the DX ones here:

    http://www.candlepowerforums.com/vb/...d.php?t=235472
    I can see that you also uses the CBA analyzer, it is going to be interesting to compare your measurements with mine and see what batteries has changed capacity.

    Looks like the only one we have in common as of now is the TrustFire TR2500 (blue), where you get close to 2400 mAh and I get 2150 mAh (at 1 A).
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  19. #19
    Banned Lightcrazycanuck's Avatar
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    Default Re: LiIon 18650 battery comparison

    Interesting,very Interesting.

  20. #20
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    Default Re: LiIon 18650 battery comparison

    Hello Rebelbayou,

    There should be no problems putting a cell into a light and trying it out. Just don't run it for any length of time or the cell will become over discharged.

    A problem may be that the cell, since it is not fully charged, may not have enough capacity left to power your application.

    Tom
    Behind every Great man there's always a woman rolling her eyes...

    Most batteries don't die - they are tortured to near death, then murdered...

  21. #21

    Default Re: LiIon 18650 battery comparison

    Thanks Tom,

    I'll stick it in a 2C mag with a spacer and see what happens. Hopefully my charger will be here in a couple of days. I ordered an Ultrafire WF-139. I hope thats the right one. Also, is there any reason that I should save the pcb boards or protection circuits from the end of the laptop battery packs? I won't ever do anything with them but if someone needs them, they can have them. Have a good day!

  22. #22
    Flashaholic The Dane's Avatar
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    Default Re: LiIon 18650 battery comparison

    Quote Originally Posted by rebelbayou View Post
    Thanks Tom,

    I'll stick it in a 2C mag with a spacer and see what happens. Hopefully my charger will be here in a couple of days. I ordered an Ultrafire WF-139. I hope thats the right one. Also, is there any reason that I should save the pcb boards or protection circuits from the end of the laptop battery packs? I won't ever do anything with them but if someone needs them, they can have them. Have a good day!
    The Trustfire TR-001 is better!

    My $0.02
    Dont go spoiling a perfectly good thread with too many facts.
    Henrik
    Creator of The Axe and the BigM*g and i'm sure more silly projects will follow

  23. #23

    Default Re: LiIon 18650 battery comparison

    Thanks for your .02 The Dane. I somehow overlooked that one while I was looking at chargers. I think I will go ahead and order it too, seeing as it's only $8. I assume it has an overcharge protection on it? But from what I've read, I still don't think I will leave them charging without being there to monitor them every few minutes.

    Can someone point me in the right direction to find out what 18650 cell and spacers to use in a 2C mag? Or is it possible to run 2 18650s' in a 2C? Thanks for taking the time and having the patience to deal with all these newb questions! I know it gets old...

  24. #24

    Default Re: LiIon 18650 battery comparison

    Thanks for doing the tests on the most used cells that we have or plan on getting.

  25. #25
    *Flashaholic* HKJ's Avatar
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    Default Re: LiIon 18650 battery comparison

    Added Soshine 2800 and UltraFire LC2400 batteries. I have also added where and when I got the batteries.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  26. #26
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    Default Re: LiIon 18650 battery comparison

    Great. Can you test Panasonic 2900 mAh 18650 cells? Not protected. That's all I have used lately. I noticed they have more capacity than AW cells.

  27. #27
    *Flashaholic* HKJ's Avatar
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    Default Re: LiIon 18650 battery comparison

    Quote Originally Posted by etc View Post
    Great. Can you test Panasonic 2900 mAh 18650 cells? Not protected. That's all I have used lately. I noticed they have more capacity than AW cells.
    I can not answer that before I know where to get them and how expensive they are. Note: I am in Europe.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  28. #28
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    Default Re: LiIon 18650 battery comparison

    Somebody sponsor this man with some batteries. He IS doing us a lot of good.

    I'm in for ten bucks for the battery fund. Who's with me? Paypal it to him or to me and I'll send it to him or whatever. I'm in as I'm too damn stupid to do these things myself, I'm happy as hell when someone does stuff like this.

    Some of the dealers chime in please with lower prices for testing purposes or a couple of samples. Hey, I took the first step. PM me your paypal and ten bucks are on the way for the testing fund

    George

  29. #29
    *Flashaholic* HKJ's Avatar
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    Default Re: LiIon 18650 battery comparison

    Quote Originally Posted by guiri View Post
    Somebody sponsor this man with some batteries. He IS doing us a lot of good.
    I would like getting some sponsoring, but I do not really need it. What I need is help with getting the interesting batteries (Like the Panasonic), i.e. where to buy them, without paying high shipping fees.

    I have more batteries on order that will be added to the test when I get them.
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  30. #30

    Default Re: LiIon 18650 battery comparison

    Nice work HKJ !!!

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