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Thread: Best or Better 21700 Battery?

  1. #1

    Default Best or Better 21700 Battery?

    I'm new to the world of 21700 batteries. Which batteries are the best in terms of performance and which are best in terms of 'value' (cost for performance)?

    Are the ones with built in USB-C charging as powerful and reliable as stand alone batteries that need an external charger? Which batteries and charger is best if you don't use the built in charger 21700's?


    p.s. Yes, I did search and found a lot of flashlight threads but, not really anything regarding the batteries themselves except for people pro/con with Tesla or wanting something smaller. Cost and form factor seems to make the 21700 a great option for normal flashlights but, I'm really new to the batteries.

  2. #2
    *Flashaholic* Burgess's Avatar
    Join Date
    Apr 2006

    Default Re: Best or Better 21700 Battery?

    One factor --

    WHICH flashlight are you planning
    to USE them in ? ? ?

    Need to know the Maximum Current
    your needs require.

  3. #3

    Default Re: Best or Better 21700 Battery?

    Fenix E35 V3.0

  4. #4
    Flashaholic* RobertMM's Avatar
    Join Date
    Jan 2014
    Las Pińas, Philippines

    Default Re: Best or Better 21700 Battery?

    Look for something based on the Samsung 50E cell, as the cell Fenix includes or recommends seems to based on that base cell.

    I personally have two of those, awesome capacity and decent current capacity.
    "Tint is within the eye of the beholder." - WoodsWalker

  5. #5

    Default Re: Best or Better 21700 Battery?

    Nitecore makes a 15 amp rated 5000 mAh 21700 cell that has usb-c charging.

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