Battery switch advice.

Discussion in 'Motorhome Chat' started by PaulyP, Jun 20, 2012.

  1. PaulyP

    PaulyP Funster

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    Not sure about the battery switch at the front which puts the 12v on.
    I have this on when driving and it runs the fridge, when on EHU the fridge is switched over to mains.
    My question is should the switch still be in the on posiiton when on EHU, does it make any difference, when i switched it off everything still seemed to work ok.
    Sometimes electrics seem to make sense then other times:Doh::Doh:
     
  2. pappajohn

    pappajohn Funster Life Member

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    the 12v master switch has nothing to do with the fridge when driving...the engine battery (or more properly, the alternator) runs the fridge in that instance.

    the 12v fridge relay switch's off when you stop the engine so leaving the fridge's 12v switch turned on when on hookup wont do any harm.

     
  3. PaulyP

    PaulyP Funster

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    So on that basis the 12v master switch does nothing when on EHU. Only in use when say wildcamping.
     
  4. pappajohn

    pappajohn Funster Life Member

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    usually the on-board battery charger will act as a power supply on hookup so the battery is redundant unless more power is needed than the charger can supply (maybe 15amps) then the battery will supply what extra is needed, and then recharge when the excess load is removed.

    turn the master switch on, or possibly the battery wont receive a charge if turned off.

    again, leaving the 12v fridge switch on wont hurt anything or flatten the battery.
     
  5. PaulyP

    PaulyP Funster

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    Thanks for that Pappajohn it's made things a bit clearer.:BigGrin:
    Still in a big learning curve.:Eek!::Eek!:
     
  6. John & Joan

    John & Joan Funster

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    The red key switch stays on 24/7 on our S700. If you turn it off is disconnects the internal electics and step from the battery. If off on EHU you are not charging your leisure battery.

    John
     
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