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Solar panel

  • 21-04-2020 11:18am
    #1
    daveville30
    Registered Users Posts: 220 ✭✭


    What would be a small enough solar panel to keep 2 12v batterys in series charged up I've just ordered a 24v charge controller box thing I'm not sure what solar panel to buy to go with it.cheers


Comments

  • #2
    fergal.b
    Moderators, Motoring & Transport Moderators, Sports Moderators Posts: 6,320 Mod ✭✭✭✭fergal.b


    I fitted two 175w victron monocrystalline solar panels that should keep me off the grid running the diesel night heater and charging the 3 110 amp batteries where ever we go, these panels are made for our weather and work well on a dull day. You will have to work out what amp hour batteries you have and what you use when you know this give these guy's a call and they will sort you out. https://euromotive.ie/




    .


  • #3
    daveville30
    Registered Users Posts: 220 ✭✭daveville30


    Cheers fergal I've 2 110ah batterys it's more to keep them charged then run things.i want something not to big if I can


  • #4
    spaceHopper
    Registered Users Posts: 3,958 ✭✭✭spaceHopper


    Measure the system voltage, if they are in parallel the voltage will be 12V not 24


  • #5
    daveville30
    Registered Users Posts: 220 ✭✭daveville30


    spaceHopper wrote: »
    Measure the system voltage, if they are in parallel the voltage will be 12V not 24

    In series daisy chained to give 24v to the starter


  • #6
    daveville30
    Registered Users Posts: 220 ✭✭daveville30


    Should these be run in series or parallel to give me 24v I've attached a picture


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  • #7
    simbav
    Registered Users Posts: 11 ✭simbav


    what controller do you have?


  • #8
    daveville30
    Registered Users Posts: 220 ✭✭daveville30


    Got it of e bay looks more decent then the one that came with the kit


  • #9
    daveville30
    Registered Users Posts: 220 ✭✭daveville30


    Here's a pic


  • #10
    fergal.b
    Moderators, Motoring & Transport Moderators, Sports Moderators Posts: 6,320 Mod ✭✭✭✭fergal.b


    Depends on what gear you have, in a series you add the voltage together and in parallel you add the amperages together. Have a read of this https://www.explorist.life/solar-panels-series-vs-parallel/





    .


  • #11
    simbav
    Registered Users Posts: 11 ✭simbav


    daveville30 wrote: »
    Here's a pic

    - Maximum voltage input: 36V
    Only in parallel with this controller. For the Irish weather I recommend MPPT charger controller.


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  • #12
    daveville30
    Registered Users Posts: 220 ✭✭daveville30


    I've 2 panels and a charge controller it's only to keep the batterys topped up


  • #13
    daveville30
    Registered Users Posts: 220 ✭✭daveville30


    Parallel is + to minus then to charge controller?


  • #14
    Ubbquittious
    Registered Users Posts: 6,177 ✭✭✭Ubbquittious


    daveville30 wrote: »
    Parallel is + to minus then to charge controller?


    No, all the +'s and all the -'s on the charge controller


  • #15
    daveville30
    Registered Users Posts: 220 ✭✭daveville30


    I've 2 other charge controllers would any of these work


  • #16
    simbav
    Registered Users Posts: 11 ✭simbav


    Fake description for the left controller. Both controller's must be working.


  • #17
    daveville30
    Registered Users Posts: 220 ✭✭daveville30


    Both are brand new in the box why is it a fake description?


  • #18
    simbav
    Registered Users Posts: 11 ✭simbav


    It's too small controller. Never seen PWR controller 100A. Only MPPT controller 100A, but it's cost about 500E.


  • #19
    daveville30
    Registered Users Posts: 220 ✭✭daveville30


    I've no doubt one of these is suitable thanks for your advise


  • #20
    Ubbquittious
    Registered Users Posts: 6,177 ✭✭✭Ubbquittious


    I'd stand well back before putting 100 amps through one of those yokes


  • #21
    daveville30
    Registered Users Posts: 220 ✭✭daveville30


    60 watt solar panel.


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