TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

best place for cheap 18650 cells that wont blow up on me :)

Discussion in 'Battery Discussion' started by blakegallagher, Jun 20, 2014.

  1. blakegallagher

    Joined:
    Jul 21, 2012
    Messages:
    935
    Location:
    South Texas
    This may be wrong thread but I am looking for some replacement 18650's for my power drill and figured there would not be a better place to ask where I should get them. I know there are many experts here and would love your suggestions. My limitations are I only need a few cells. I am thinking less than 20 and would love a low price but I have heard some of the cheap ones are very unstable so I would love any suggestions.

    Thanks a lot
    Blake
     
  2. stopcrazypp

    stopcrazypp Well-Known Member

    Joined:
    Dec 8, 2007
    Messages:
    7,057
    The best place to ask this is probably candlepowerforums.com as they focus heavily on buying 18650s in low/moderate volume for their flashlights.

    Just from some browsing of that site, if you are looking for protected cells, Orbtronic has a good reputation (although more expensive):
    http://www.orbtronic.com/18650-batteries

    People have also bought from fasttech (with better prices for raw cells):
    http://www.fasttech.com/category/1420/batteries

    However, avoid the cells with "Fire" in the brand name. They tend to be the cheap cells you are trying to avoid.

    If you are buying a raw cell (without additional protection), look for the brand names: Panasonic, Samsung, LG, Sony, Sanyo.

    Also, make sure the size is a good fit (some cells are taller esp. the "protected" ones, some are shorter), and that the charge/discharge current ratings are compatible with what you are replacing (you may have to look for datasheets on other websites). Some (like the Samsung ICR18650-30B) also have a higher 4.35V charging voltage and would have significantly lower capacity if charged to the standard 4.2V.

    The best prices are typically on alibaba (sometimes ebay), but given the high probability of fakes there, you may not want to try that option unless you do a lot of research on the sellers.
     
  3. blakegallagher

    Joined:
    Jul 21, 2012
    Messages:
    935
    Location:
    South Texas
    Thank you for the very informative post !

    Blake
     

Share This Page