14.8V 5000 MAH 40C Lipo issue ?

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  • Andris Golts
    Senior Member
    • Jan 2011
    • 504

    #1

    14.8V 5000 MAH 40C Lipo issue ?

    Hi all out tonight running my P tunnel noticed after 45 seconds boat slowed to less than half speed brought it in checked voltage each of the 4 cells was aprox 3.99 v put it back on charger took 700 mah to re charge .To make sure this was a lipo issue put another pack in and ran for 3 minutes AT FULL SPEED with no issues. What can be going on with this lipo ? Regards Andris Golts.
  • Doby
    KANADA RULES!
    • Apr 2007
    • 7280

    #2
    Bad cell?? Do you have one of these?

    http://www.offshoreelectrics.com/pro...emp-eossentry2
    Grand River Marine Modellers
    https://www.facebook.com/search/top/...ne%20modellers

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    • Chilli
      Fast Electric Addict!
      • Jan 2008
      • 3070

      #3
      What brand pack and how hold is it?? Are the two packs the same??
      Mike Chirillo
      www.capitolrcmodelboats.com

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      • don ferrette
        Fast Electric Addict!
        • Aug 2010
        • 1093

        #4
        Sounds like that questionable pack is due to head for a salt water bath..........
        - IMPBA Hall of Fame -
        - IMPBA Hydro Technical Director -

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        • tlandauer
          Fast Electric Addict!
          • Apr 2011
          • 5666

          #5
          Originally posted by don ferrette
          Sounds like that questionable pack is due to head for a salt water bath..........
          Yup, did that to 6 batteries last week, nice to watch the little bubbles and finally the corrosion takes place.
          Too many boats, not enough time...

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