13 watt ebay solar panel

Discussion in 'Motorhome Chat' started by lou020, Jan 27, 2014.

  1. lou020

    lou020 Funster

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  2. Techno

    Techno Funster Life Member

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    Put simply NO
     
  3. Vlad The Impaler

    Vlad The Impaler Funster

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    By the time you drive to where your going,your starter battery should be sufficiently charged to re-start the engine and get you home again!
    Or am I missing something?



    Vlad
     
  4. camcondor

    camcondor Read Only Funster

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    Don't bother with one of these they are a waste of time and money. Rather wait till you can have a decent installation done - I would say upwards of 80w.
     
  5. pappajohn

    pappajohn Funster Life Member

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    save your money......

    13watts is a theoretical figure and will never be realised.....especialy from an amorphous panel, very inefficient except very bright sunlight.

    13watts is a little over 1amp but in reality in the uk summertime you will get maybe 0.6amps (600milliamps) per sunshine hour.
    A lot of that 600ma will be used by parasitic loads.......alarm, radio memory etc.

    A usable figure may be as low as 300ma and with 10 hours of bright sunshine it will still only total 3amps....and your batteries natural discharge rate could take a chunk of that.

    It may get as low 1amp per day actually going into your battery if you are lucky.....and the sun doesnt shine every day.

    In my opinion the minimum panel size is around 50watts to maintain your battery taking into account sunless/rainy days


    Ps: my engine battery will last upwards of 8 weeks in a winter layup and still start my 6.8 ltr 10 cylinder petrol engine.....and it only a large car battery

    If you only expect 2 or 3 days before its too flat to start the engine you need a new battery, not a solar panel.
     
    Last edited: Jan 27, 2014
  6. lou020

    lou020 Funster

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  7. lou020

    lou020 Funster

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    Forget leaving the kids at home option, i'll need them and the wife to push & bumpstart the MH.
    I'll wait till we change MH and get a proper solar panel fitted.
    Thanks for the advice.:thumb:
     
  8. Allanm

    Allanm Funster

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    That would be ok to keep a spare unconnected battery topped up while in storage, you wouldn't get any benefit from it doing anything else.
    Allan
     
  9. hilldweller

    hilldweller Funster Life Member

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    That is a fortune. For double that you get a full size 100/125W panel.

    Don't you have 12V sockets on the leisure batteries ?
     
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  10. lou020

    lou020 Funster

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    The battery is 2 1/2 years old, and will usually last in winter maybe 5 days before she wont start.
    i have a ctek intel charger on it whilst it is parked up.
     
  11. pappajohn

    pappajohn Funster Life Member

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    'ow much !!!!!!! .....£60....are they kidding ? :Eeek:
     
  12. lou020

    lou020 Funster

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    yes i'll have to educate the kids into using them
     
  13. pappajohn

    pappajohn Funster Life Member

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    spend the £60 on a new battery or a decent set of jump leads until you get a new van...should last a lot longer than 5 days even in winter.

    I have a new (18 months old but unused) car battery stood on my bench.....last fully charged beginning of november........still showing 12.5v now.....thats 10 weeks.
     
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  14. hilldweller

    hilldweller Funster Life Member

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    I've never seen a Maplin price where I said "that's cheap".

    They do convenience, not cheap.
     
  15. pappajohn

    pappajohn Funster Life Member

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    I ordered a 60 watt panel from maplin a couple of years ago for that price.....then i realised it was an amorphous panel and cancelled the order.
     
  16. lou020

    lou020 Funster

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    Ok,,, thats a big no for the ebay solar panel.
    i'll unwatch it then.
    Thanks for all the info,, i think i was getting watts mixed up with amps.
    And i'll get the battery checked out and check for any power drain and also try and get a bigger AH battery.
     
  17. Techno

    Techno Funster Life Member

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    For a while I thought you didn't believe me :Laughing:
     
  18. lou020

    lou020 Funster

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    I think you've enough solar power for all those caravans around you in your picture:Laughing:
    you could bottle and sell it.
    is that why we've had no sun,,, you have it all
     
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  19. wivvy's dad

    wivvy's dad Read Only Funster

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    If you want one of those suitcase solar panels, I have one that I no longer use, you can have it for £20.

    I'm in Salford - the posh part..!!
     
  20. Trikeman

    Trikeman Read Only Funster

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    Hi all,
    not that I'm up for getting embroiled in the pros and cons of the OP item request, but I have one of these (or at least its the same) and cost £16 when I got it.
    http://www.ebay.co.uk/itm/12v-Volt-...11265436819?pt=UK_Gadgets&hash=item19e7efd493
    I don't (or haven't) used it on the MoHo, however I use it to recharge an old (though it was the best of a pair) leisure battery I have in the garage. It's in a window in the garage and has charged up this battery a few times (use the battery on a lead lamp) and is connected all the time when not in use.
    I don't know what type it is but it seems to work well for the size of it.

    Just my t'penneth.

    Trikeman. :Wink:
     
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