Lipo Connection Sparking

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  • john722010
    Member
    • Feb 2012
    • 41

    #1

    Lipo Connection Sparking

    I am running 2 X 2S Hyperion 5000mAp batteries with 5.5mm Bullet connectors with a Seaking 180 and stock Mystic Cat 1800kv motor.

    Every time I hook up the batteries I get a spark on the final connection.

    Conenct Battery "A" + term to ESC + lead, Connect Battery "B" - to ESC -, then when I connect battery "A" - to Battery "B" + I get a spark.
    I purchased a kinetic Spark arrestor and still I get a spark. With the arrestor, after connecting Batts to ESC I have the small gage wire on the arrestor connected and then I connect Battery "A" - to one side of the Arrestor bullet connectors and batt "B" + to the other side of arrestor bullet and then I connect the arrestor bullets together and I get a spark.

    These are my first Lipo's and brushless setup, I must be doing something wrong, getting a spark everytime I connect the Batts can't be normal.

    Can anyone help me out or enlighten me? I figure I must be doing something wrong in the connections? But I get a spark on the final connection every time no matter what order I connect.
    Thanks
    John722010
  • Fluid
    Fast and Furious
    • Apr 2007
    • 8011

    #2
    You are doing nothing wrong, getting the spark is a good thing. It is telling you that the capacitors on your ESC are working. If you ever connect the packs and don't get a spark, your caps may be bad. Then the next thing to happen will be a burned-up ESC.


    .
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    • john722010
      Member
      • Feb 2012
      • 41

      #3
      Thanks,
      I would have been chasing this as a problem forever. Learn something everyday.

      Comment

      • Make-a-Wake
        FE Rules!
        • Nov 2009
        • 5557

        #4
        You should see what i get when i plug in 10s Lipo!!!!
        NEED PARALLEL CONNECTORS?? QUALITY 5.5MM, 8MM, 8 AND 10 AWG, GET THEM HERE: http://forums.offshoreelectrics.com/...est!&highlight=

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        • john722010
          Member
          • Feb 2012
          • 41

          #5
          I hope you wear rubber gloves when you connect.

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          • LiPo Power
            DJI Drone Advanced Pilot
            • May 2009
            • 3186

            #6
            Check this:

            DJI Drone Advanced Pilot
            Canada

            Comment

            • BHChieftain
              Fast Electric Addict
              • Nov 2009
              • 1969

              #7
              If you do some searching you can find some threads for a spark arrestor which basically uses a resistor for the initial connection, allowing the caps to charge up slowly without a spark then you connect the mains. I run 4s and get a smaller spark so this arrestor is not needed but with higher voltages it could come in handy since the arcing does kinda burn the connectors. Alternatively, you could install an on- off switch. The proboat escs have a switch and there is no spark when connecting the lipos with the switch "off".

              Chief

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