How can I turn my battery charger off?

Discussion in 'Motorhome Chat' started by Buffy, Jul 6, 2016.

  1. Buffy

    Buffy Read Only Funster

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    I've just added a 165w PV panel to the roof of my 2011 Elddis Autoquest, which is keeping the battery topped up nicely, which in turn runs a 1500w inverter to provide mains power as if I was connected to EHU. When I do connect to EHU the inverter is turned off, of course. My dilemma, is that the Charge Controller tops up the battery, so I don't need the built in charger to be charging as well - I'm not even sure that it's a good idea to have two methods of charging running together - Any ideas?
    The other issue is that I cannot find a way to turn off the built in charger, If I isolate it at the consumer unit, I also knock out the fridge, which I want the inverter to power. I can't even find a fuse to remove to stop it working. I've run out of ideas how to disable it and I can't find any similar forum threads. All ideas gratefully received.....
     
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  2. pappajohn

    pappajohn Funster Life Member

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    Are you sure there isn't a switch, usually a rocker switch, somewhere on the charger....unusual if there isn't.

    If not it's easy enough to fit a switch in the supply line but would need turning on when on hook up.

    No problem at all having two separate charge supplies except of course your inverter is charging the battery via the charger which isn't good....inverter is taking more out of the battery running the charger than the charger can supply.

    Also, when on inverter run the fridge on gas.
     
    Last edited: Jul 6, 2016
  3. DanielFord

    DanielFord Funster

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    What van do you have, or more helpfully, what control unit do you have? I imagine a Sargent, but the model number will help.
     
  4. Buffy

    Buffy Read Only Funster

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    PappaJohn - I'm pretty clued up on electrics and have to agree that it's unusual not to have a separate switch, on this occasion there isn't one. You mention running the fridge on gas when using the inverter, why is that? If I run the fridge on gas it eliminates all my problems, but was one of the reasons for adding the PV - apart from 'er indoors missing Corrie!

    Daniel, no markings on the unit to give it away, it's a 2011 Elddis Autoquest 130.
     
  5. DanielFord

    DanielFord Funster

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    Take a photo of it and post, by control unit, I am referring to the unit that will be in a cupboard somewhere. It has all the RCD's and fuses in it, and not the panel over the door.
     
  6. John Laidler

    John Laidler Funster

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    My system has both mains charger and EHU charger running at the same time as do almost every other MH I think. It isn't a problem.

    But running your fridge from the inverter is a non-starter I think. It will take more power than you will get from your panel but check the wattage first if you want but remember you won't get anything from your panel at night and precious little in the morning and evening. If you want to run a fridge off solar and batteries you need a compressor type. From memory a typical three way fridge will take around 150W or a bit more. You won't get this from your 165W panel except if you are really lucky for a few hours a day when parked somewhere well south.
     
  7. Steve

    Steve Funster Life Member

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    the fridge could well be pulling 10amps and 12v day and night. It wont take to long to end up with a flat battery. so unless you have lots of battery use gas
     
  8. John Laidler

    John Laidler Funster

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    Just correcting my idiot mistake!
     
  9. RichardB

    RichardB Funster

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    Ive had a 2012 Autoquest 100 and now have a 2013 Autoquest 115. Been fitting batteries and solar panels and wanted to turn off the charger but I couldn't work out how to do it - the mains panel/fuses seem to turn of everything apart from the charger....
     
  10. Buffy

    Buffy Read Only Funster

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    Ah, see what you mean. We're off to the south of France for August so the Fridge was going to be run during the day, gas by night. I'm hoping for a lot of sun!
    This is the unit:
    box.JPG
     
  11. DanielFord

    DanielFord Funster

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    I am not familiar with that unit, but I would suggest that judging by the left hand switch, your charger is already off!
     
  12. Buffy

    Buffy Read Only Funster

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    I've just turned the charger off, it'll be back on soon as we head off somewhere.

    DBK - is your Charge Controller supplying a charge to the battery AND your mains charger? I take it you've not had any problems. My charge controller will cut out at 13.8 battery volts.

    RichardB - Thanks for the comment, Looks like it's an AutoQuest thing! I may just see what happens when that cover comes off.....
     
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