26 Oct 2009 @ 3:07 PM 
 

What size solar panel should I use to continuously charge my 12v battery that powers lights fans etc?

 
dayfee12 asked:


I need to know what kind, size of solar panel i should use to keep a charge on my 12v battery that supplies power to my box stand. I am running a cpl of lights and a heater. possibly a few other items. Any suggestions on a setup?

Make Solar Panels
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Categories: Engineering
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Last Edit: 26 Oct 2009 @ 03 07 PM

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Responses to this post » (2 Total)

 
  1. jeebus22 said...
    12:27 am - October 28th, 2009

    How to Make Home Solar Power

    You need to do research. First find out how much power your items are going to be drawing. Next, you have to research a bit on solar cells. What you are mostly interested in is efficiency and the surface area you are going to be able to cover with them. You will use this information in conjunction with the amount of time you believe your solar cells with be exposed to the sun and the amount of energy the sun will provide to that surface area to determine the efficiency of the solar panel you need. There’s more to it, but since you are asking for help on yahoo, that should do.

  2. Blue Sky said...
    8:29 am - October 29th, 2009

    How to Make Solar Power

    You need to know what wattage you need.
    Lets say you have a 100 watt light bulb.

    volts X amps = watts

    12v X amps = 100 watts

    amps = 100/12 = 8.3 amps

    you would need a solar panel that can handle this output.

    see

    you are looking at a few hundred dollars just for a light bulb.

 

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