Wuben        
Results 1 to 8 of 8

Thread: Test/Review of UltraFire SJ18650 6000mAh (Black)

  1. #1
    *Flashaholic* HKJ's Avatar
    Join Date
    Mar 2008
    Location
    Copenhagen, Denmark
    Posts
    9,681

    Default Test/Review of UltraFire SJ18650 6000mAh (Black)

    UltraFire SJ18650 6000mAh (Black)



    Official specifications:
    • Rechargeable 3.7 V 18650 6000mAh li-ion Battery
    • 6000mAh 3.7V 18650 rechargeable Battery
    • No memory effect, recharge up to 1000 cycles
    • 100% Q.C. of every battery
    • Manufactured by Hi-Capacity power products.
    • Suitable for laser pointer, flashlight torch and other electronic products.
    • Safe and environmental friendly.
    • Item size: 66*18mm




    This is a cheap battery from ebay with record breaking capacity according to its specifications. This is, of course, not correct.











    The battery can deliver about 1500mAh at low load, anything about 1A load is a problem and the two cells has different capacity.















    Conclusion

    There batteries are not very impressive, they can drive a low power flashlight, but only about half the time a good battery can.
    Also remember that these batteries are unprotected.

    I will rate this as a bad cell.



    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
    Compare to 18650 and other batteries
    My website with battery, charger, usb reviews, comparisons & information: https://lygte-info.dk/
    Latest addition is multimeter reviews

  2. #2
    Flashaholic* RI Chevy's Avatar
    Join Date
    Aug 2011
    Location
    Ocean State
    Posts
    3,600

    Default Re: Test/Review of UltraFire SJ18650 6000mAh (Black)

    Thank you again for doing these tests for us! These are just too funny!

  3. #3
    Flashaholic* 880arm's Avatar
    Join Date
    Aug 2011
    Location
    Wildlands of Western Kentucky
    Posts
    1,752

    Default Re: Test/Review of UltraFire SJ18650 6000mAh (Black)

    Well at least they measured 6000 watt-hours. Someone probably needs to explain to UltraFire how those are different than mAh

    Thank you HKJ for all the tests you do!

  4. #4
    Flashaholic*
    Join Date
    Jul 2009
    Location
    Illinois
    Posts
    2,327

    Default Re: Test/Review of UltraFire SJ18650 6000mAh (Black)

    It slices, it dices, it.................. needs it's manufacturer to get a good

  5. #5
    Flashaholic* RI Chevy's Avatar
    Join Date
    Aug 2011
    Location
    Ocean State
    Posts
    3,600

    Default Re: Test/Review of UltraFire SJ18650 6000mAh (Black)

    Typical chinese advertising practices. Overambitious and overzealous.

  6. #6

    Default Re: Test/Review of UltraFire SJ18650 6000mAh (Black)

    Quote Originally Posted by RI Chevy View Post
    Typical chinese advertising practices. Overambitious and overzealous.
    They are off only by a letter: W instead of A. Maybe there is a disclaimer inside the outer wrapper stating they are not responsible for typographical errors

    And btwy, "it is green!" It says so right on it.

  7. #7
    Flashaholic* RI Chevy's Avatar
    Join Date
    Aug 2011
    Location
    Ocean State
    Posts
    3,600

    Default Re: Test/Review of UltraFire SJ18650 6000mAh (Black)

    LOL

  8. #8

    Thumbs up Re: Test/Review of UltraFire SJ18650 6000mAh (Black)

    Great test

    I stupidly purchased 4 of these Ultrafire 6000mah vary cheaply off ebay before id bothered to research them a bit.

    Since i have purchased 2 Panasonic 3400mah protected here in NZ


    The ultra fire finally arrived yesterday so as i dont have a proper test setup I have done a Quick test using my cree U2 with the fully charged Ultrafire i measured 900 mAh consumption it only took 1 hour to drop to 2.8 volts

    I know this is only a rough test but they seem to have even less capacity than the above test

    Luckily I only payed $7 NZ for the 4 battery's and in hindsight I should of done my research first

    Great test thanks for the good info

Posting Permissions

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