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Thread: Test/Review of Sanyo 18650 2600mAh (Red)

  1. #1
    HKJ's Avatar
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    Default Test/Review of Sanyo 18650 2600mAh (Red)

    Sanyo 18650 2600mAh (Red)



    Official specifications:
    • Sanyo brand you can trust
    • Rechargebale 18650 battery
    • Extra big area flat conduction system design
    • Unprotected




    This is an unprotected cell, it is also used in many 2600mAh protected batteries with a added protection circuit.










    Comparing it to protected version, the largest difference is output voltage with 5A load, without protection the voltage is slightly higher. For actual values use my comparator.













    There is two set of curves in the above chart and they do track very well.


    Conclusion

    There is not much to say about this cell, it is a very good cell, just remember that it is unprotected.



    Notes and links

    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
    My website with flashlight, battery and charger information: lygte-info.
    More than 200 battery reviews and 80 charger reviews.
    Compare 18650 LiIon batteries or smaller (RCR123, 16340, 14500, 10450) LiIon batteries.

  2. #2
    Flashaholic* candle lamp's Avatar
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    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    Another excellent test review as always. HKJ!

    Thank you.

    The cells show very nice performance.
    Latest Review : Rayus PT10S Review

  3. #3

    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    how fresh are your sanyo cells?

    I got a pair of sanyo 2600mah produced in jan 2012

    btw, are they li-co or advanced chemistry?

  4. #4
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    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    Quote Originally Posted by bestsystem View Post
    how fresh are your sanyo cells?
    I got mine very recently (See date in info box), but I do not know how long time they have been stored in different warehouses before that.
    My website with flashlight, battery and charger information: lygte-info.
    More than 200 battery reviews and 80 charger reviews.
    Compare 18650 LiIon batteries or smaller (RCR123, 16340, 14500, 10450) LiIon batteries.

  5. #5

    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    HKJ what's the date code on the label? (eg. P11C or similar)

  6. #6
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    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    Quote Originally Posted by gopajti View Post
    HKJ what's the date code on the label? (eg. P11C or similar)

    There it not any obvious print on the cells, as can be seen on the pictures.
    In the red plastic there is some engraved tiny letters: "SANYO L" and "UR18650FM R1122"
    Under the red wrapper, there is some print directly on the cell: "PJKM4PE" and "135836"

    Note: The text is very difficult to read, i.e. I might have a letter or number wrong.
    My website with flashlight, battery and charger information: lygte-info.
    More than 200 battery reviews and 80 charger reviews.
    Compare 18650 LiIon batteries or smaller (RCR123, 16340, 14500, 10450) LiIon batteries.

  7. #7

    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    you think these cells are good for repacking laptop batteries?

  8. #8
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    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    Quote Originally Posted by Overclocker View Post
    you think these cells are good for repacking laptop batteries?
    Yes.
    My website with flashlight, battery and charger information: lygte-info.
    More than 200 battery reviews and 80 charger reviews.
    Compare 18650 LiIon batteries or smaller (RCR123, 16340, 14500, 10450) LiIon batteries.

  9. #9
    Flashaholic* tobrien's Avatar
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    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    good work buddy!
    aka Edgar Allan Bro, Brosama Bin Liftin, Walter Crunkite, Bro Namath, Teddy Brosevelt, and the Tomahawk Crunkmissile.
    my lights - review of PrecisionWorks - that's Gucci Mane in my avatar

  10. #10

    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    Yes difficult to read, these letters is ok, but the date code is a four, letter/number code, here is my Sanyo battery

    can you check again? pls

    Last edited by gopajti; 09-26-2012 at 01:00 PM.

  11. #11
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    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    Quote Originally Posted by gopajti View Post
    Yes difficult to read, these letters is ok, but the date code is a four, letter/number code, here is my Sanyo battery

    can you check again? pls
    Found a code: P45C
    My website with flashlight, battery and charger information: lygte-info.
    More than 200 battery reviews and 80 charger reviews.
    Compare 18650 LiIon batteries or smaller (RCR123, 16340, 14500, 10450) LiIon batteries.

  12. #12

    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    Thanks! date 2011 November.

  13. #13

    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    Quote Originally Posted by gopajti View Post
    Thanks! date 2011 November.
    so how do you decipher the code to get manufacture date?

    week # and then year?

    C=2011?
    Last edited by mellowman; 09-26-2012 at 08:36 PM.

  14. #14

    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)


  15. #15

    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    qualitychinagoods has got fresh Sanyo UR18650FM cells, I asked, and they say the date code is Q31G (2012, August!)
    Last edited by gopajti; 09-29-2012 at 12:23 AM.

  16. #16

    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    HI HKJ,

    I was reading your charts that compare all of the 18650 cells with one another. I am a little confused about some of the labeling in the charts thought.

    The chard shows this cell which performed well "sanyo 2600mah Red" Then right below it another cell that says "sanyo 2600mah Red BV" that perfomed only half as well under a 5 amp load.

    What is the difference? Whats BV?

    I am also not clear on what many of the other letters after the cell description are, like

    SB, LB??? I can guess at a few like FT is flat top? BT is button top?

    Thanks again for all your work on these.
    In Him (Jesus Christ) was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not.
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  17. #17
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    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    Quote Originally Posted by vestureofblood View Post
    HI HKJ,

    I was reading your charts that compare all of the 18650 cells with one another.
    It would be good if you went to that thread and asked the question. It is sort of OT here.

    Bill

  18. #18

    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    Quote Originally Posted by vestureofblood View Post
    HI HKJ,

    I was reading your charts that compare all of the 18650 cells with one another. I am a little confused about some of the labeling in the charts thought.

    The chard shows this cell which performed well "sanyo 2600mah Red" Then right below it another cell that says "sanyo 2600mah Red BV" that perfomed only half as well under a 5 amp load.

    What is the difference? Whats BV?

    I am also not clear on what many of the other letters after the cell description are, like

    SB, LB??? I can guess at a few like FT is flat top? BT is button top?

    Thanks again for all your work on these.
    Looks like it's the protected version http://lygte-info.dk/review/batterie...20bv%20UK.html

  19. #19
    HKJ's Avatar
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    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    Quote Originally Posted by vestureofblood View Post
    I was reading your charts that compare all of the 18650 cells with one another. I am a little confused about some of the labeling in the charts thought.

    The chard shows this cell which performed well "sanyo 2600mah Red" Then right below it another cell that says "sanyo 2600mah Red BV" that perfomed only half as well under a 5 amp load.

    What is the difference?
    Protected or unprotected.


    Quote Originally Posted by vestureofblood View Post
    Whats BV?
    I can only have the same name once in my test, this means I have to add something to the name when testing more copies of the same battery.
    Usual it is some letters from the dealers name, but if the batteries are from the same dealer I have to use something else like bt and ft (button/flat top).


    Quote Originally Posted by vestureofblood View Post
    I am also not clear on what many of the other letters after the cell description are, like

    SB, LB??? I can guess at a few like FT is flat top? BT is button top?
    The battery top exist in 3 styles: Small diameter Button top, Large diameter Button top, and flat.
    In the links at the bottom of each review you can find more information
    My website with flashlight, battery and charger information: lygte-info.
    More than 200 battery reviews and 80 charger reviews.
    Compare 18650 LiIon batteries or smaller (RCR123, 16340, 14500, 10450) LiIon batteries.

  20. #20
    Flashaholic* tobrien's Avatar
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    Default Re: Test/Review of Sanyo 18650 2600mAh (Red)

    is there a difference between UR18650FM and UR18650F?
    aka Edgar Allan Bro, Brosama Bin Liftin, Walter Crunkite, Bro Namath, Teddy Brosevelt, and the Tomahawk Crunkmissile.
    my lights - review of PrecisionWorks - that's Gucci Mane in my avatar

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