Charge controller

Discussion in 'Solar Power' started by misskiwi, Jan 12, 2016.

  1. misskiwi

    misskiwi Funster

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    How near to the battery dose the charge controller need to be?
     
  2. pappajohn

    pappajohn Funster Life Member

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    If you mean solar controller it doesnt really matter.
    If it must be closer to one or the other due to accessability or room then closer to battery rather than panel.
     
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  3. Zigisla

    Zigisla Funster

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    I am sure there will be folks joining in soon that will tell you about distance and voltage drop. From what I gather reading the other threads on this topic is that the controller should be close to the batteries as you can afford more voltage drop from the panel to the controller than you can the controller to the batteries.
     
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  4. misskiwi

    misskiwi Funster

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    Yes a solar charger, if I put it on the wall of the camper van it would be 1.40 from the battery, is that ok or has it got to better closer.
     
  5. pappajohn

    pappajohn Funster Life Member

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    Sounds fine to me.
    As Zigisla said its to do with distance and volt drop due to cable size and length.

    The wires from the panel to controller usually carry around 17volts so a greater distance may reduce that to 16v....an acceptable voltage.
    To lose anywhere near that on the controller to battery which may only be 13v would be too much.

    In reality the distanced for it to have any real effect would be far greater than that in a motorhome if the correct sized wire is used.
    4 to 6mmsq is the usual acceptable size.
     
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  6. Lenny HB

    Lenny HB Funster

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    As pappajohn says not critical providing the cables are large enough, don't need to go overboard on the cables as the largest volt drop will be in the summer when you have most output available & least need.
     
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