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  1. #1
    RC poster
    Join Date
    Jun 2013
    Posts
    17

    Spartan forum people r the best

    I want to thank all that r responsible for the traxxas Spartan forum. THANK YOU !!!! You r the best. I am a newbie and even after reading , I am still learning from all of you Spartan owners. I already did my first mess up.. I ordered 2 4S batteries thinking they were parallel , call me stupid, didn't I read on there advertisement some where it says there in series ??? Too anxious I guess.. I will hope to some day be able to help some one new as you have done for me...

  2. #2
    RC Champion
    Join Date
    Mar 2010
    Location
    Ontario, Canada
    Posts
    1,249
    Battery basics. A single lipo battery cell is 3.7volts and = 1s

    Batteries are either wired and packaged together or wired together by you.

    lipo cells are combined and configured in many ways, to achieve voltage, and the size of the cell will give mah.

    for calculations lets use cell voltage 3.7, mah 3000

    2s1p = 2 cells wired in series to give 7.4v, 3000mah
    2s2p = 2 cells wired in series and 2 cells wired in parallel, give 7.4v, 6000mah

    4s1p = 4cells in series, 14.8v, 3000mah
    5s1p = 5 cells in series, 18.5v, 3000mah
    so if you wire your 2x 4s batteries you will run 4s voltage and double the battery mah, the added weight of 4s batteries auctually makes the stock boat more stable and only 1-3 mph slower,

    mah increases you run time
    MMM/2650, E-maxx Body=FUN !
    3 Slash 4x4
    Pede 4x4

  3. #3
    RC Qualifier
    Join Date
    Jun 2011
    Posts
    844
    It is easy to re-wire the ESC parallel and run those 4S batteries.
    Doubles your capacity for extra run time.
    hog

  4. #4
    RC poster
    Join Date
    Jun 2013
    Posts
    17
    Thank you for the schooling now I understand !! Very Helpful
    Quote Originally Posted by akesj1 View Post
    Battery basics. A single lipo battery cell is 3.7volts and = 1s

    Batteries are either wired and packaged together or wired together by you.

    lipo cells are combined and configured in many ways, to achieve voltage, and the size of the cell will give mah.

    for calculations lets use cell voltage 3.7, mah 3000

    2s1p = 2 cells wired in series to give 7.4v, 3000mah
    2s2p = 2 cells wired in series and 2 cells wired in parallel, give 7.4v, 6000mah

    4s1p = 4cells in series, 14.8v, 3000mah
    5s1p = 5 cells in series, 18.5v, 3000mah
    so if you wire your 2x 4s batteries you will run 4s voltage and double the battery mah, the added weight of 4s batteries auctually makes the stock boat more stable and only 1-3 mph slower,

    mah increases you run time

  5. #5
    RC poster
    Join Date
    Jun 2013
    Posts
    17
    Thanks Hog , I thought I screwed up at first but now fell I did right and I'll run them in parallel. I will be running this in upstate NY on the Hudson river so it will need to take on some rough water. I used to run a prather 30in. with .21 K+B and it was fine so I'll see. I also play with a 54 In. weed eater boat.

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