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solar panel help

Discussion in 'General Discussion' started by moon man, 23 Apr 2010.

  1. moon man

    Mobster

    Joined: 17 Nov 2003

    Posts: 3,636

    Location: St Breward Cornwall

    we have a modest caravan in Cornwall on the coast that we pay £600 a year for unlimited use(unneccessary infomation ) but there is an added price of £3 a night for a hook up ,as im always looking for a way to save money ,could i use my el cheapo solar panal instead.
    cooking is on the gas botttle,the fridge is on gas so ive just got the freeveiw tv at 5o watts plus the lighting maybe an extra 10 to 20 watts both for maybe 3 hours a day (walking and surfing the rest of the day)
    would you say my panel that only kicks out 4 amps would top up a 100 amp hour battery in the daylight hours enough to do the job ?
     
  2. PermaBanned

    Capodecina

    Joined: 7 Jul 2009

    Posts: 16,239

    Location: Newcastle/Aberdeen

    It depends how large the battery is... will need to be quite big to run 50W's which means it would be harder to charge.
     
  3. PhillyDee

    Capodecina

    Joined: 12 Feb 2007

    Posts: 14,169

    Location: South Shields

    Are these all going through an inverter?

    You would save more power by using 12V LED lighting from the battery direct, using case cathodes as these can aso use quite low poer and are 12V.

    I have no idea what sort of efficiency you get with solar chargers.

    Oh, and 100Ah battery is quite a beast.

    Do you already have the solar panel? If so, give it a go, and see!
     
  4. moon man

    Mobster

    Joined: 17 Nov 2003

    Posts: 3,636

    Location: St Breward Cornwall

    yes i would need an inverter as the tv is 240v ,the lighting is 12v and yes i have a 4 amp solar charger ,im thinking maybe the battery would lose power over time but id maybe get a week out of it or something ,but yes i may be going down this weekend but for sure the week b4 spring bank ,dont have a battery yet as it died last month ,so thats on my to do list
     
  5. PhillyDee

    Capodecina

    Joined: 12 Feb 2007

    Posts: 14,169

    Location: South Shields

    A 100Ah lesuire batteries keep their charge well, I use lead acid ones myself, and they can last months with a full charge.