Flat Top Battery Polarity
Results 1 to 7 of 7
Like Tree1Likes
  • 1 Post By Amirite

Thread: Flat Top Battery Polarity

  1. #1
    Super Member Verified Member
    ECF Veteran
    Supporting Member
    Amirite's Avatar
    Join Date
    Feb 2013
    Location
    New York, NY
    Posts
    499

    Default Flat Top Battery Polarity

    Which end of the flat top battery is positive? I have the Trustfire TR-001 and I'm not sure if this charger is just not capable of charging this type of battery (Samsung ICR18650 - 26FU) or if I caused some damage by reversing polarity.

  2. #2
    Ultra Member Verified Member
    ECF Veteran
    Supporting Member
    Jacoji's Avatar
    Join Date
    Jan 2013
    Location
    Portland, OR
    Posts
    1,368
    Blog Entries
    7

    Default

    Apologies - it looks like I directed you to a ghost town over here.

    I can answer the first part of you question. The battery will have some sort of marker as to positive and negative and the ends will look different. The + will look like a smashed button and the bottom have a truly flat surface.

    My 14650 battery:



  3. #3
    Super Member Verified Member
    ECF Veteran
    Supporting Member
    Amirite's Avatar
    Join Date
    Feb 2013
    Location
    New York, NY
    Posts
    499

    Default

    Okay, So I didn't reverse the polarity. I guess the Trustfire TR-001 dual bay is not capable of charging flat top batteries.

    Thanks for clearing that up.

  4. #4
    Ultra Member Verified Member
    ECF Veteran
    Supporting Member
    mostlyclassics's Avatar
    Join Date
    Feb 2011
    Location
    Evanston, IL
    Posts
    1,309

    Default

    My Trustfire TR-001 has no problem with flat top 18650 batteries. It shouldn't have any problem charging your Samsungs.
    ~ been vaping since February 25, 2011 ~


  5. #5
    Ultra Member Verified Member
    ECF Veteran
    Supporting Member
    Jacoji's Avatar
    Join Date
    Jan 2013
    Location
    Portland, OR
    Posts
    1,368
    Blog Entries
    7

    Default

    Troubleshooting:
    • Was this a new battery or had it been used and in need of a charge?
    • Do you have a multi-meter or check battery function on any of your mods to read the current charge level?
    • Does it make any difference to give the battery a half-turn spin once inserted in the charger? You'd still have to wait for the full charge indicator on your charger to know if this makes a difference.
    Last edited by Jacoji; 02-17-2013 at 03:17 PM.

  6. #6
    Super Member Verified Member
    ECF Veteran
    Supporting Member
    Amirite's Avatar
    Join Date
    Feb 2013
    Location
    New York, NY
    Posts
    499

    Default

    Quote Originally Posted by mostlyclassics View Post
    My Trustfire TR-001 has no problem with flat top 18650 batteries. It shouldn't have any problem charging your Samsungs.
    It worked this time! Must have inserted poorly on my previous attempt.
    Last edited by Amirite; 02-17-2013 at 05:11 PM.
    Jacoji likes this.

  7. #7
    PV Master ECF Veteran WillyB's Avatar
    Join Date
    Oct 2009
    Location
    USA
    Posts
    3,712

    Default

    Quote Originally Posted by Amirite View Post
    It worked this time! Must have inserted poorly on my previous attempt.
    They do have a bit of a problem sometimes due to the almost flush positive terminal on the charger. Most newer chargers have a more prominent, protruding terminal.
    "The farther backward you can look, the farther forward you are likely to see"

    Try searching...

Bookmarks