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Thread: DC LED Lighting

  1. #1
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    Default DC LED Lighting

    I am new to solar. I am considering using solar panel to charge battery which would then drive DC LED lighting in evening. I would like to avoid any DC->AC inverters or transformers.

  2. #2
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    Then use 12 volt LED's
    MSEE, PE

  3. #3
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    There are many 12V "camper, marine, automotive and RV" LED & Flourscent lighting systems.

    Just be sure you don't dont leave a light on while charging, Solar charging voltages can read 16V, and will fry LED's designed for 14V automotive use. After the sun goes down, and the solar is not charging , the battery is a normal voltage, and lights are fine.


    You WILL need a 12V charge controller. You can get cheap piece-o-c&%# controllers on ebay, or real ones from RE vendors, such as our boards host http://www.solartown.com
    Since the dawn of time it has been mankind's dream to blot out the sun.
    Montgomery Burns

    "Always listen to experts. They'll tell you what can't be done and why. Then do it."

    spreadsheet based voltage drop calculator:
    http://www.solar-guppy.com/download/...calculator.zip
    http://www.solarpaneltalk.com/showth...oss-calculator

    http://www.mike-burgess.org/PVinfo_2.html

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,
    battery lugs http://tinyurl.com/LMR-BigLug
    Setting up batteries http://tinyurl.com/LMR-NiFe

    gear :
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV || || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

  4. #4
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    Where would you buy you lighting? The local RV place has some items but their pricey. Any favorite on-line sellers?

  5. #5
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    Default 12VDC 5W LED bulbs

    Hello, I made myself the 5W 12 Vdc LEd bulbs that I show in the photos, If you dont find anything that fit your needs I can help they cost me $18 USD each. Regards
    Attached Images Attached Images

  6. #6
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    You have to tell me more than that, toget my intrest, Lumens, Color, Power .....

  7. #7
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    After the sun goes down, and the solar is not charging.
    Last edited by russ; 12-27-2012 at 03:38 AM. Reason: removed link

  8. #8
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    Quote Originally Posted by TadSibrel View Post
    After the sun goes down, and the solar is not charging.
    Energy can be stored

  9. #9
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    Quote Originally Posted by Xinthia View Post
    Energy can be stored
    Get Lost
    Spammer
    MSEE, PE

  10. #10
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    Default

    Quote Originally Posted by allenkrell View Post
    I am new to solar. I am considering using solar panel to charge battery which would then drive DC LED lighting in evening. I would like to avoid any DC->AC inverters or transformers.
    Look around on some RV forums as MANY have replaced the old 12vdc single bulb light in their trailer, with the new very low consumption LED replacements. I did it on all my dome lights on my 27 foot trailer, and it made a huge difference in battery consumption. I run my Honda generator quite often with the led lights on, and it has not seemed to hurt them any. Even with the generator,,, running the on board battery charger on the trailer, so I am sure those LED's are getting the 15 -16vdc charging voltage as the trailer has a "bulk charger" that charges 2 batteries pretty fast! Oh,, buy the LED's from ebay as they are ever so much cheaper. Yes,, when you buy lots of 10 for under $20 you might get a bad one in the batch from China. But hey, at those prices, who cares! Mine have lasted a Long time so far too!

    Here is a link to one site talking about LED's in it it has links to ebay listings for 10 pack LED's. Mine look very much like those, and they are so much brighter than the stock bulb, and use about 1/3 the power!

    http://www.keystonerv.org/forums/sho...t+replacements

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