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Thread: Test/Review of Keeppower 26650 5200mAh (Black) 2014

  1. #1
    *Flashaholic* HKJ's Avatar
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    Default Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Keeppower 26650 5200mAh (Black) 2014


    Official specifications:
    • KeepPower 26650 3.6V/3.7V 5200mAh Li-ion Rechargeable Battery
    • Min Capacity: 5100mAh
    • Typical Capacity: 5200mAh
    • Normal Voltage: 3.7V
    • Quality Lithium Ion rechargeable cell
    • Maximum Capacity and Reliability
    • 4.2 volts max voltage and 3.6-3.7 volts nominal voltage




    26650 batteries are getting higher capacity, this cell sets the record for capacity.










    The two cells has very good tracking and capacity does not vary much up to 5A load.











    Protection trips at around 9.5A.





    Conclusion

    Very good capacity and good performance for a high capacity 26650 battery.



    Notes and links

    The batteries was supplied by Keeppower for review.

    How is the test done and how to read the charts
    How is a protected LiIon battery constructed
    More about button top and flat top batteries
    Compare to other 26650 batteries
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
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    Flashaholic* candle lamp's Avatar
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Thanks a lot for your excellent review. HKJ!
    The cell has high capacity & good performance as you said.

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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    So I take it that, protection aside, these are completely different cells from the Keeppower IMR 26650 cells with the same 5200mAH capacity.

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    Flashaholic* tobrien's Avatar
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    that's amazing
    aka Edgar Allan Bro, Brosama Bin Liftin, Walter Crunkite, Bro Namath, Teddy Brosevelt, and the Tomahawk Crunkmissile.
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by tobrien View Post
    that's amazing
    I don't have these cells, but the 5200 IMRs. However, it's pretty amazing all the same. It looks like 26650s are finally starting to get some REAL capacity. I wonder if 26650 lights will become more popular now that you can truly no longer say that 26650s don't have enough more capacity than 18650s to be worthwhile.

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    *Flashaholic* HKJ's Avatar
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by StorminMatt View Post
    So I take it that, protection aside, these are completely different cells from the Keeppower IMR 26650 cells with the same 5200mAH capacity.
    I am going to test the IMR26650 5200mAh soon.
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by HKJ View Post
    I am going to test the IMR26650 5200mAh soon.
    It kind of makes me wonder why Keeppower would bother with an ICR when they have an IMR of the same capacity. Or why the ICR doesn't have a larger capacity than the IMR.

  8. #8
    *Flashaholic* HKJ's Avatar
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by StorminMatt View Post
    It kind of makes me wonder why Keeppower would bother with an ICR when they have an IMR of the same capacity. Or why the ICR doesn't have a larger capacity than the IMR.
    For most application I would prefer the protected version.
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    Flashaholic Hoop's Avatar
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Is this a preview? They aren't on Keeppower's website yet.

    Looks quite appealing. Thanks for the review.
    Last edited by Hoop; 06-22-2014 at 10:28 PM.

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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    I'm not sure where this battery is available. But I got my IMRs at Illumination Supply.

  11. #11
    *Flashaholic* HKJ's Avatar
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by Hoop View Post
    Is this a preview? They aren't on Keeppower's website yet.
    Keeppower sent them to me about a month ago, they did not give me any information about when they are going to sell them.
    Try asking some Keeppower dealers.
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    I'm still amazed that it says 5200 mAh and it really is!! that's phenomenal
    aka Edgar Allan Bro, Brosama Bin Liftin, Walter Crunkite, Bro Namath, Teddy Brosevelt, and the Tomahawk Crunkmissile.
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by tobrien View Post
    I'm still amazed that it says 5200 mAh and it really is!! that's phenomenal
    The same is true of the IMRs.

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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Nice review, HKJ. This is great to see more improvements in the 26650 cells. My desire is to see more 1x26650 lights on the market. It really is too bad that there are not very many options yet. Hopefully, there will be more 1x26650 lights in the future when manufacturers realize that these cells have a noticeable capacity advantage.

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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by StorminMatt View Post
    The same is true of the IMRs.
    are you referring to Keeppower IMRs specifically?
    aka Edgar Allan Bro, Brosama Bin Liftin, Walter Crunkite, Bro Namath, Teddy Brosevelt, and the Tomahawk Crunkmissile.
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    Flashaholic* tobrien's Avatar
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by Hoop View Post
    Is this a preview? They aren't on Keeppower's website yet.

    Looks quite appealing. Thanks for the review.
    RTDVapor has em now it looks like.
    aka Edgar Allan Bro, Brosama Bin Liftin, Walter Crunkite, Bro Namath, Teddy Brosevelt, and the Tomahawk Crunkmissile.
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by Mr. Tone View Post
    Nice review, HKJ. This is great to see more improvements in the 26650 cells. My desire is to see more 1x26650 lights on the market. It really is too bad that there are not very many options yet. Hopefully, there will be more 1x26650 lights in the future when manufacturers realize that these cells have a noticeable capacity advantage.
    I think you very well could see some new 1x26650 lights in the future as a result if higher capacity 26650s. For WAYYYY too long, it was just too easy for people to say that 26650s have too little of an advantage over 18650s. But with these cells, that's no longer the case. And 1x26650 lights are just alot easier to live with than multi-18650 lights. For now, probably the best 1x26650 lights are the Foursevens Maelstrom lights (MMU-X and MMU-X3). Both are worth looking into.

    Quote Originally Posted by tobrien View Post
    are you referring to Keeppower IMRs specifically?
    Yes.

  18. #18
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by tobrien View Post
    RTDVapor has em now it looks like.
    Does not appear that way. Perhaps you are mistaken?

  19. #19
    Flashaholic* tobrien's Avatar
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by Hoop View Post
    Does not appear that way. Perhaps you are mistaken?
    this is it right? http://www.rtdvapor.com/keeppower-im...5200mah-20amp/
    aka Edgar Allan Bro, Brosama Bin Liftin, Walter Crunkite, Bro Namath, Teddy Brosevelt, and the Tomahawk Crunkmissile.
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by StorminMatt View Post
    I think you very well could see some new 1x26650 lights in the future as a result if higher capacity 26650s. For WAYYYY too long, it was just too easy for people to say that 26650s have too little of an advantage over 18650s. But with these cells, that's no longer the case. And 1x26650 lights are just alot easier to live with than multi-18650 lights. For now, probably the best 1x26650 lights are the Foursevens Maelstrom lights (MMU-X and MMU-X3). Both are worth looking into.
    Thanks for the suggestion and I have looked at those 4sevens lights in the past. For me, the UI is undesirable and also I just can't do cool white tints anymore. I have not purchased a 4sevens light since they stopped making neutral white models quite a while back. I really like Eagletac lights and have more than I can keep track of. They have great build quality, UI that I like, and also offer neutral tints on almost all of their models. In fact, I have an Eagletac 2x26650 neutral white model called the SX25L2. I use it for patrol and I love it. The diameter is really nice in my hands. I really hope Eagletac comes out with a 1x26650 at some point. I also like Thrunite's designs for the most part and they also offer neutral white models.

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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by tobrien View Post
    Those are the IMRs. But the way I see it, unless you are dead set against anything without a protection circuit, they are probably better anyway. Of course, I'm probably biased, since I prefer unprotected cells.
    Last edited by StorminMatt; 06-24-2014 at 01:05 PM.

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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    I just got a couple unprotected Vappower 5200ma IMR 26650 cells from Mountain Electronics. Does anyone know if these are the cells inside the Keeppower IMR 5200ma 26650? I have looked on CPF and BudgetLightForum and can't find any reviews on the Vappower 5200ma IMR 26650 cells so I was curious. They are very nice looking and seem to perform well so far. I have no way of testing them myself.

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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    This battery must be popular, it seems to be out of stock at the reliable USA vendors.

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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by Mr. Tone View Post
    I just got a couple unprotected Vappower 5200ma IMR 26650 cells from Mountain Electronics. Does anyone know if these are the cells inside the Keeppower IMR 5200ma 26650? I have looked on CPF and BudgetLightForum and can't find any reviews on the Vappower 5200ma IMR 26650 cells so I was curious. They are very nice looking and seem to perform well so far. I have no way of testing them myself.
    Does anyone know the answer to my question?

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    Flashaholic* tobrien's Avatar
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by SubLGT View Post
    This battery must be popular, it seems to be out of stock at the reliable USA vendors.
    yeah, I've noticed that too. I got one from Illumn.com and it's working well
    Quote Originally Posted by Mr. Tone View Post
    Does anyone know the answer to my question?
    I'm not sure if the Vappower is the same as the Keeppower so far as what cell is used, but have you contacted Rich at MTN to ask? I'd be willing to bet they are the same, though
    aka Edgar Allan Bro, Brosama Bin Liftin, Walter Crunkite, Bro Namath, Teddy Brosevelt, and the Tomahawk Crunkmissile.
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    No, I figured someone here had probably removed the Keeppower wrapper to see what was inside.

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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Where do you guys get these here in the USA? I can't find them anywhere...
    "I am the light of the world. Whoever follows me will never walk in darkness, but will have the light of life." John 8:12

  28. #28
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    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by lionken07 View Post
    Where do you guys get these here in the USA? I can't find them anywhere...
    Try illumn.com
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
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  29. #29

    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    Quote Originally Posted by HKJ View Post
    Try illumn.com
    Lucky for me as I only live 24 miles from http://www.illumn.com/
    Wish I had found the CandlePower website before ordering the Ultrafires.

  30. #30

    Default Re: Test/Review of Keeppower 26650 5200mAh (Black) 2014

    What charger is best for these, i have a nitecore i2 but i'd doubt it'll handle them.

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