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  1. #1
    RC Enthusiast
    Join Date
    May 2009
    Location
    Phoenix AZ.
    Posts
    29

    Advice for A123 cells

    Hey guys looking for more advice
    I know that some of you use A123 cells
    and build them your self and that's my plan too
    I tried soldering some last night but I have
    trouble soldering the aluminum side
    what flux should I get or what method?
    I am planing to use them on my Slash any changes
    I should make on my truck also like gearing?
    Brushless Velineon Slash


    [IMG][/IMG]

  2. #2
    RC Champion
    Join Date
    Dec 2008
    Location
    STL. MO
    Posts
    1,559
    you need aluminum soldering flux, or zinc paste. not sold at radio shack. You can also buy a lipo sized a123 pack for like $30 from hobby city
    HB Ve8 w/ tekin (AWESOME)
    E-Slayer w/MMM
    SC10

  3. #3
    RC Competitor
    Join Date
    Jan 2009
    Posts
    93
    for the velenion this battery is great http://www.*********.com/*********/s...C_LiFePo4_Pack

    i'm using one right now and it work like a charm. 9.9 volt as heavy like a 8 cell hump nimh but with better discharge rate.
    these vid may help you with the soldering
    http://www.youtube.com/watch?v=vkDgo...eature=related

    the first time I tried soldering I use this as a guide to get my cells from the dewalt packs
    http://www.slkelectronics.com/DeWalt/packs.htm

    this I used to build my fisrt pack http://www.slkelectronics.com/DeWalt/hints.htm
    but now as the cells are avilable with tabs i prefer using those and avoid the mess.
    And as Moose say you will need aluminiun specific solder and flux... and get a heavier iron . soldering without tabs can be done but can damage the cells if you are not carefull .( i destroyed a few cells myself) .

    final link i used http://www.rcgroups.com/forums/showthread.php?t=599316

    hope it help

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