Lipo questions

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  • C-Mac
    Member
    • Apr 2010
    • 39
    #1

    Lipo questions



    hello all,

    I am setting up my EKOS with 2 -120A esc's, 2- Feigao 10XL motors and will run 4S. My question is if a 4000mAh ( 40C ) lipo draw's 160A [ correct me if I am wrong but I am useing this equation C x mAh / 1000] will this set -up handle it? I am kinda new to lipos and tried to do some research before posting. When choosing a Lipo does C rating make a huge difference? I would like to use 4000- 5000 mAh 30-40C rated lipos but the noob in me is a little worried now and confused.

    Thanks in advance for the help,
    C-mac
    Tags: None
    • mappo
      Senior Member
      • Feb 2010
      • 488
      #2
      Originally posted by C-Mac


      hello all,

      I am setting up my EKOS with 2 -120A esc's, 2- Feigao 10XL motors and will run 4S. My question is if a 4000mAh ( 40C ) lipo draw's 160A [ correct me if I am wrong but I am useing this equation C x mAh / 1000] will this set -up handle it? I am kinda new to lipos and tried to do some research before posting. When choosing a Lipo does C rating make a huge difference? I would like to use 4000- 5000 mAh 30-40C rated lipos but the noob in me is a little worried now and confused.
      Thanks in advance for the help,C-mac
      see what your highest watts your motor can handle.
      4000x40c=160ampsx14.8=2365 watts.. your motor should not exceed this wattage
      5000x40c=200ampsx14.8=2960 watts " " " " "
      A higher c rating is always better due to the fact that the cell will handle higher wattage with less heat
      Last edited by mappo; 05-14-2010, 02:51 AM.
      Do you know what the biggest problem with the world is?
      That the Smartest people are full of doubts while the stupid ones are full of confidence.::tt2

        Comment

        • C-Mac
          Member
          • Apr 2010
          • 39
          #3
          I'm using 2 Feigao 10XL's with 120A esc's in my EKOS. They are 440 watts max with proper cooling if I am correct. Is there a mAh and C rating I should not exceed?

            Comment

            • mappo
              Senior Member
              • Feb 2010
              • 488
              #4
              Your motors should not exceed the maximum discharge rate of your pack, so if your motor is pulling 440 watts, then you will be ok with your 4000 0r 5000mah cells
              Remember c rating is how many amps your cell can discharge eg. a 5000mah pack with 40c rating means it can be discharged at at rate of 200 amps per cell, so if you have a 4 cell pack 14.8v that pack will produce. 14.8v x200 amps=2960 watts. the higher the voltage the higher the wattage
              Last edited by mappo; 05-14-2010, 03:05 AM.
              Do you know what the biggest problem with the world is?
              That the Smartest people are full of doubts while the stupid ones are full of confidence.::tt2

                Comment

                • C-Mac
                  Member
                  • Apr 2010
                  • 39
                  #5
                  Mappo I can't thank you enough for the information! Thank you very much.

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