Multicopter Battery Disconnect versus Switch

Hi

Disconnecting the battery seems to be the most common way of switching the electronics off on a multicopter.  So here is my stupid question:

Why can't we use a switch as a temporary means, e.g.  turn it off quickly to adjust/fasten something?

Is it because

  1. it's unreliable
  2. or are switches to handle that current over priced.
  3. or do they add another point of failure.
  4. or just adds weight.
  5. or regulation?

I was just wondering as some Dean connectors are really stiff.

Thanks

Anton

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Replies

  • You may be able to fabricate a version like the purchased item I used but.. be careful any rings that are metal that may come in contact with the shorting element.

    -=Doug

  • Yes, Deans, XT60s, EC3s, EC5s, etc are a horrible method of disconnecting power to any vehicle.

    That is why I employ an arming plug. See it in my blog post HERE.

    All actual switches will have to operate at the maximum rated current of the battery (assuming the wiring is sized properly).

    High current switches are not cheap (as you have noted in your initial observation).

    The arming plug is always mounted high and accessible on my multirotors.

    This makes removal of battery power easy except when, of course, they crash upside down.

    -=Doug

    • Thanks Doug

      Your arming plug is so simplistic, yet functional. 

      Thank you.  I'll probably add a keyring to the plug for easier use.

      Anton

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