Page 1 of 2 12 LastLast
Results 1 to 10 of 12

Thread: Cheap Solar Charger

  1. #1
    Newbie
    Join Date
    Jun 2007
    Posts
    6

    Cheap Solar Charger

    Im about to start a project with a laptop and fj cruiser. I was searching around these forums and other places. I found this 15 watt solar panel http://www.bargainoutfitters.com/cb/...9&kwtid=209379. It is quite small for its wattage,voltage,amperage and I wanted to make sure that im not going to get ripped off if i buy it. I plan to make a release for the panel so I could remove it from the rack, but while its there it would keep the dedicated battery(not the car battery or the laptop battery, instead a seperate one just for the system) topped off. Any suggestions or comments?

    Thanks

    Adam
    .dok

  2. #2
    Self proclaimed spoon feeder TruckinMP3's Avatar
    Join Date
    Jun 2002
    Location
    Colorado
    Posts
    2,742
    Why do you think that is a better solution than running a carPC off of the regular vehicle battery?
    TruckinMP3
    D201GLY2, DC-DC power, 3.5 inch SATA

    Yes, you should search... and Yes, It has been covered before!

    Read the FAQ!

  3. #3
    _
    Join Date
    Mar 2004
    Location
    Little Elm, Texas
    Posts
    13,500


    And if you're going to use it to charge your battery, I would think again.

    7 amps isn't a whole lot of a charge. In order for something like this to work, it has to be able to put out more amperage than what's going to be demanded from the battery by your system.

    Just wire your second battery up in your car to be charged off of the alternator as well. It will look much better than carrying around a large solar pannel anyways.
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  4. #4
    Self proclaimed spoon feeder TruckinMP3's Avatar
    Join Date
    Jun 2002
    Location
    Colorado
    Posts
    2,742
    You may not need a second battery at all.

    Many systems function just fine with one battery.
    TruckinMP3
    D201GLY2, DC-DC power, 3.5 inch SATA

    Yes, you should search... and Yes, It has been covered before!

    Read the FAQ!

  5. #5
    _
    Join Date
    Mar 2004
    Location
    Little Elm, Texas
    Posts
    13,500
    also depends on if this "system" he is referring to is just the computer or if it includes the audio system as well.. and if so, how big of an audio system.
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  6. #6
    Self proclaimed spoon feeder TruckinMP3's Avatar
    Join Date
    Jun 2002
    Location
    Colorado
    Posts
    2,742
    Quote Originally Posted by RedGTiVR6 View Post
    also depends on if this "system" he is referring to is just the computer or if it includes the audio system as well.. and if so, how big of an audio system.

    True, maybe he will post the specs of the proposed set up
    TruckinMP3
    D201GLY2, DC-DC power, 3.5 inch SATA

    Yes, you should search... and Yes, It has been covered before!

    Read the FAQ!

  7. #7
    Newbie
    Join Date
    Jun 2007
    Posts
    6
    Thanks again for the help.

    The laptop will still have its regular battery, and here is the rest of the proposed plan.

    bluetooth
    gps
    wifi
    xm or sirius
    touchscreen (still dont know which one)


    the plan so far is to keep the stock audio and stereo for now but have the audio out of the pc to go to the audio in on the stereo (fj's come with that already) Im not much of a big music listener so this works well for me. The carputer will have other interfaces such as relays and such to controll different things. Things that i still dont have figured out because im in the design stages. I want the carputer to be able to run most all the time no matter weather the vehicle is on or off. Only the pc and wireless stuff (gps, wifi, bluetooth, possibble sat. radio?) will be on when the vehicle is off, the monitor and stereo and everything will still go off. I want to connect to the vehicle from work or home depending on which it and i am at. So the thought with the solar panel was to have it take some of the stress off of the dedicated battery durring daylight hours, it doesnt nessecarily have to charge it but that would be nice. The laptop would run on the dedicated battery untill it gets to like 10-20 % left, then it would rely on its built-in battery untill it gets to like 15% then go into standby then at like 8% go into hibernation. When the vehicle is running it will first charge the car battery and then the carputer battery( the carputer battery could probably even be like an atv battery or something, im open to suggestions). The option of shutting the carputer down with the car will be available or have it stay on.
    If the exact charger doesnt exist, im open to basic-ish circuit designs.
    .dok

  8. #8
    Newbie
    Join Date
    Jun 2007
    Posts
    6
    Would the solar panel even make a dent in battery usage?
    .dok

  9. #9
    Self proclaimed spoon feeder TruckinMP3's Avatar
    Join Date
    Jun 2002
    Location
    Colorado
    Posts
    2,742
    Quote Originally Posted by DokumentAMarble View Post
    Would the solar panel even make a dent in battery usage?

    They are intended for (very) small consumption or maintaining in storage. I think it would not keep up with very small PCs power needs.
    TruckinMP3
    D201GLY2, DC-DC power, 3.5 inch SATA

    Yes, you should search... and Yes, It has been covered before!

    Read the FAQ!

  10. #10
    Newbie
    Join Date
    Jun 2007
    Posts
    6
    well is there any other method to allow it to run throughout the day, but not kill the battery. it isnt that long of a drive from my home to work. I suppose i could add a hidden connector to connect to with a batter charger durring the night. so the carputer battery would stay topped off. That presents other questions. Is it bad to charge a battery and use it at the same time? should i get a deep cycle battery? Thanks for the help

    adam
    .dok

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •