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Thread: largest capacity protected 18650 battery

  1. #61

    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by Shadowww View Post
    That's for a pair.

    Keeppower batteries are cheapest because they're the OEM (original manufacturer), Keeppower also manufactures batteries for bunch of other companies - they use same protection circuits etc, the only difference is logo on the wrapper, and configuration (flat top / raised top / button top).
    Wow if that's the case, I'm going to try them.

  2. #62

    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by CyberCT View Post
    Wow if that's the case, I'm going to try them.
    You might have problems - seems the seller (doingoutdoors) is "currently way" and has no items for sale at the moment.

    Edit 10th Nov - eBayer has returned - 3400/3100 Keeppower cells not available to UK buyers, but are available on eBay dot com
    Last edited by Dubois; 11-10-2012 at 03:59 PM.

  3. #63

    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by Dubois View Post
    You might have problems - seems the seller (doingoutdoors) is "currently way" and has no items for sale at the moment.

    Edit 10th Nov - eBayer has returned - 3400/3100 Keeppower cells not available to UK buyers, but are available on eBay dot com
    I'm interested in these keeppower 18650s, but i was wondering if they are fatter than usuall 18650s? I read some of the feedback and some said they were too fat to fit in their 18650 lights. What is the measurements for the battery and what is the norm for most reputable 18650s like AW etc... ?

  4. #64
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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by InquisitiveInquirer View Post
    I'm interested in these keeppower 18650s, but i was wondering if they are fatter than usuall 18650s? I read some of the feedback and some said they were too fat to fit in their 18650 lights. What is the measurements for the battery and what is the norm for most reputable 18650s like AW etc... ?

    Check out here for most 18650 brand dimensions (length/width):

    http://lygte-info.dk/review/batterie...mary%20UK.html

    According to HKJ's site (linked above):
    Keeppower 3400 are 18.7mm thick
    Keeppower 3100 are 18.6mm thick
    AW 3100 are 18.4mm thick

  5. #65
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    Default Re: largest capacity protected 18650 battery

    The Keeppower 3400's will not fit in a SC600 or a TN30/31 but will fit fine in a TM11.

  6. #66
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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by CM2010 View Post
    The Keeppower 3400's will not fit in a SC600 or a TN30/31 but will fit fine in a TM11.
    Will they fit in a Nitecore EC25 ?

    __philippe

  7. #67
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    Default Re: largest capacity protected 18650 battery

    Which of the batteries mentioned would be the best to use in this new light I bought:

    http://www.manafont.com/product_info...-18650-p-13366

    Is a higher Mah always better?

    Thanks.

  8. #68
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    Default Re: largest capacity protected 18650 battery

    Just bought myself a late Christmas present.
    Olight M 22. Now shopping for the latest and greatest Li I protected cell to put in this bad boy.
    I worked in the Semiconductor industry for almost 20 years and I know newer technology evolves very quickly. I see the last post was six months ago. Does anybody have the latest suggestions for good High MaH protected cells to put in my new Xmas present.

    Thanks for any suggestions

  9. #69
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    Default Re: largest capacity protected 18650 battery

    Have fun with your new toy

    If I'm not mistaken, Panasonic NCR18650B are the best batteries so far with max of 3400MAH.
    They come unprotected, but you can find a lot of 3rd-party companies that sell these batteries installed with protection (GOOGLE FOR: fasttech,keeppower,eagletac, orbtronic).
    Hope It'll help you!

    Merry Christmas!!

  10. #70

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    I think orbtronic has a 3600mah cell listed on their site

    Sent from my SCH-I605 using Tapatalk

  11. #71
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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by darkknightlight View Post
    I think orbtronic has a 3600mah cell listed on their site

    Sent from my SCH-I605 using Tapatalk

    They do , but im not sure if it worth the money
    http://lygte-info.dk/review/batterie...ack)%20UK.html

  12. #72
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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by darkknightlight View Post
    I think orbtronic has a 3600mah cell listed on their site

    Sent from my SCH-I605 using Tapatalk
    Thanks Guys I will check your suggestion out

  13. #73

    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by rbchtt View Post
    They do , but im not sure if it worth the money
    http://lygte-info.dk/review/batterie...ack)%20UK.html
    Oh I hadn't realized it had been reviewed yet. Good call!

    Sent from my SCH-I605 using Tapatalk

  14. #74

    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by Shadowww View Post
    That's for a pair.

    Keeppower batteries are cheapest because they're the OEM (original manufacturer), Keeppower also manufactures batteries for bunch of other companies - they use same protection circuits etc, the only difference is logo on the wrapper, and configuration (flat top / raised top / button top).
    Isn't the KP 3400 battery a Panasonic?

  15. #75
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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by Strion LED View Post
    Just bought myself a late Christmas present.
    Olight M 22. Now shopping for the latest and greatest Li I protected cell to put in this bad boy.
    I worked in the Semiconductor industry for almost 20 years and I know newer technology evolves very quickly. I see the last post was six months ago. Does anybody have the latest suggestions for good High MaH protected cells to put in my new Xmas present.

    Thanks for any suggestions
    I would go with Orbtronic 2900mAh (I know, I know 2900mAh ).
    Even though description says NCR18650 cell inside, Orbtronic latest batch is with NCR18650-PF newest high drain cell.
    For $11.99 shipped you cannot go wrong.

  16. #76

    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by mr.lumen View Post
    ok i lied. 35 dollars for one 18650 is an issue. haha. i was thinking 15-20 dollar range. why are they so much???
    They're free if you rescue them from the recycling bin at the supermarket.

    The first laptop battery pack I "won" was rated 5.2Ah, since then I got a pack rated at 4.2Ah - but it contained 3x parallel pairs, so I assume the cells are only 2.1Ah each, the last one I got was only 2.0Ah and was a PITA to strip down for the cells - but it was free, so I'm not complaining.

    The primary application is my E-cigarette, but I'm considering other uses like the discount store LED 5W beam handlamp that self discharges if I don't leave it on the charger.

  17. #77

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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by space-cowboy View Post
    I would go with Orbtronic 2900mAh (I know, I know 2900mAh ).
    Even though description says NCR18650 cell inside, Orbtronic latest batch is with NCR18650-PF newest high drain cell.
    For $11.99 shipped you cannot go wrong.
    If you want a protected cell, it doesn't make much sense to go with high drain. The protection will trip before you reach the current limit for the cell. Kinda like buying a Lamborghini with a governor. Given that you can get the standard unprotected version of the NCR18650PF for $8, or the higher-capacity 3400 mAh NCR18650B protected cells for under $10, it isn't much of a bargain either.

  18. #78
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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by rbchtt View Post
    They do , but im not sure if it worth the money
    http://lygte-info.dk/review/batterie...ack)%20UK.html
    The NCR18650G is certainly more expensive than many protected 18650s. But at $21.99, it's actually cheaper than at least a few 3400mAH NCR18650B based cells.

  19. #79

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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by StorminMatt View Post
    The NCR18650G is certainly more expensive than many protected 18650s. But at $21.99, it's actually cheaper than at least a few 3400mAH NCR18650B based cells.
    In a very specific situation, it MIGHT perform noticeably better...more because it maintains a slightly higher voltage than the NCR18650B. The capacity bump is TINY (barely five percent in theory, and even less in practice) and they are double the cost, if your shopping fu is strong. So they are NOT good value, generally speaking.

  20. #80
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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by space-cowboy View Post
    I would go with Orbtronic 2900mAh (I know, I know 2900mAh ).
    Even though description says NCR18650 cell inside, Orbtronic latest batch is with NCR18650-PF newest high drain cell.
    For $11.99 shipped you cannot go wrong.
    Three hours ago I just visited the largest Panasonic distributor in Southern China to talk about the PF model. It is quite good and is spec'd at 10A draw, typical 2900mAh capacity with a minimum of 2750mAh. They are only made in Japan, however models like B are made in China. So chances are the PF will have a considerably longer life.

    They are pushed mainly for e-bikes in the US and power-tools in Europe, and come straight from the factory with a "button-top / washer" pos terminal which makes them easy to put in a series.

    So I will also recommend to consider taking a serious look at the PF cell. The B range is mostly reserved for TESLA, which is driving the price up. (Their contract starts in April which will swallow up the supply entirely.)
    Last edited by battery_bro; 12-22-2014 at 03:35 AM.

  21. #81
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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by battery_bro View Post
    Three hours ago I just visited the largest Panasonic distributor in Southern China to talk about the PF model. It is quite good and is spec'd at 10A draw, typical 2900mAh capacity with a minimum of 2750mAh. They are only made in Japan, however models like B are made in China. So chances are the PF will have a considerably longer life.

    They are pushed mainly for e-bikes in the US and power-tools in Europe, and come straight from the factory with a "button-top / washer" pos terminal which makes them easy to put in a series.

    So I will also recommend to consider taking a serious look at the PF cell. The B range is mostly reserved for TESLA, which is driving the price up. (Their contract starts in April which will swallow up the supply entirely.)
    Interesting, thanks.

  22. #82
    Flashaholic zemmo's Avatar
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    Default Re: largest capacity protected 18650 battery

    And of course Tesla is building a huge factory in Nevada to produce 18650 cells.

  23. #83
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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by battery_bro View Post
    So I will also recommend to consider taking a serious look at the PF cell. The B range is mostly reserved for TESLA, which is driving the price up. (Their contract starts in April which will swallow up the supply entirely.)
    Everybody says Tesla uses the NCR18650B. But are you sure? To get the kind of power that a Tesla needs from the number of cells they use in their battery pack requires the current capability of the NCR18650PD/PF/BD. The NCR18650B can't do it - at least not safely.

  24. #84
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    Default Re: largest capacity protected 18650 battery

    Quote Originally Posted by StorminMatt View Post
    Everybody says Tesla uses the NCR18650B. But are you sure? To get the kind of power that a Tesla needs from the number of cells they use in their battery pack requires the current capability of the NCR18650PD/PF/BD. The NCR18650B can't do it - at least not safely.
    I don't know that everyone is saying that.
    I will add I don't think that the new/additional contract the Tesla is working on (or signed) is for any cells we have official numbers for yet. As I understand it it is likely using Panasonic's latest construction with Si based cells. Near as I can tell this is speculation based on the expectation of positive long term test results over the last few years and new production capability. However, I don't believe any of the long term test results have been released publicly so they may have already switched gears. I think we'll know soon.

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