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Xmas Lights

Discussion in 'General Discussion Forum' started by clontaago, Dec 10, 2006.

  1. clontaago

    clontaago Well-Known Member

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    Fluffy you may be able to answer this one. I am going camping for new years and want to put some xmas lights up around the tent and tarp etc however there will be no power. Can I use a spare car battery that I have? How can I do it?
     
  2. Fluffy

    Fluffy Well-Known Member

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    If they run on 12 volt then yes (note you will drain the battery obviously) Otherwise its a generator.

    i think from memory most fairy lights have a transformer in them to take the current from 240 to 12 volt so you would need to remove this (ie cut the wires and directly wire them to the battery). However you would get better advice from a sparky, im not all that clued up on electrical stuff
     
  3. clontaago

    clontaago Well-Known Member

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    Thanks Fluffy!!

    Any sparkies out there that can assist? How long would I get out of a car battery?
     
  4. Dan

    Dan Administrator Staff Member Administrator 2016 Tipping Competitor

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    I will have a chat to my friend Mason. Though I think I can find some details for you anyway
     
  5. Dan

    Dan Administrator Staff Member Administrator 2016 Tipping Competitor

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    http://michaelbluejay.com/electricity/dc-christmas-lights.html

    try that!
     
  6. clontaago

    clontaago Well-Known Member

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  7. Dan

    Dan Administrator Staff Member Administrator 2016 Tipping Competitor

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    Oh and dick smith is your friend :)
     
  8. clontaago

    clontaago Well-Known Member

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    Yeah there is a powerhouse just down the road from work so might head there at lunchtime.
     
  9. Dan

    Dan Administrator Staff Member Administrator 2016 Tipping Competitor

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    Ic an probably help you rig up a few when you come up over xmas
     
  10. clontaago

    clontaago Well-Known Member

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    Ok I have purchased a 12v 7.2 a/h battery pack from jaycar for $20!!!

    I have been getting varying information on how long that will power the lights I have in mind. They are a strand of 100 LED lights using about 7 watts.

    Now the calculation I have used is V x A = W

    Therefore 12V multilpied by 7.2Ah = 86.4 Wh

    86.4 divided by 7 = about 12 hours

    Howvere on another web page I looked at it told me only about 6 hours.

    Any ideas?
     
  11. Dan

    Dan Administrator Staff Member Administrator 2016 Tipping Competitor

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    i would split it in half mate say about 8 hours

    Just take a few batteries is the winnder
     
  12. Fluffy

    Fluffy Well-Known Member

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    take the lower estimate and you should be pleasantly suprised. as the battery fades so will the lights
     
  13. earl

    earl Active Member

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    Thats pretty good time. I mean you wont have them on all night, plus daylight saving , they should last most of the time your away. great idea aswell. We are going to have fireworks while out camping on new years but chrissy lights would top it all off.
     
  14. clontaago

    clontaago Well-Known Member

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    Make sure they are LED xmas lights earl. They use about 80-90% less electricity.
     
  15. earl

    earl Active Member

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    Cheers mate
     

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