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Thread: Living with off grid solar.

  1. #11
    Mors Kochanski
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    Quote Originally Posted by vanNek View Post
    Hey guys,

    My partner and I are looking at renting a house with off grid solar.

    My question is how do you ho about running constant current devices like modems etc, if the inverter is only switched on as needed?


    Cheers Luke
    I am not completely sure that I understand your question. We have 240 volt solar power on the main house & 12 volt solar power on the cottage. The power is turned on all the time. If nothing is being used, then no electricity is being used. We have a fridge/freezer that is permanently running 24/7. Our modem is left on 24/7 also.
    Much depends on your voltage, how many batteries you have, how many solar panels you have. Our power is supplied by 4 large 6 volt batteries making 24 volts DC which is then converted to 240 volts AC.
    Keith.
    "Two roads diverged in a wood, and I,
    I took the one less travelled by,
    And that has made all the difference".
    Robert Frost

    http://woodsrunnersdiary.blogspot.com/

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  3. #12
    Les Stroud

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    How often do the batteries need replacing?

  4. #13
    Mors Kochanski
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    I can't say Luke, we have had ours for about 12 years now without any trouble.
    Keith.
    "Two roads diverged in a wood, and I,
    I took the one less travelled by,
    And that has made all the difference".
    Robert Frost

    http://woodsrunnersdiary.blogspot.com/

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  6. #14
    Richard Proenneke
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    Quote Originally Posted by Luke777 View Post
    How often do the batteries need replacing?
    A friend of mine who is an electrician is starting to set up battery packs for his solar using recycled battery packs from laptops. He is currently running about 200 x 18650 li ion battery cells. The cells fit into little specially made plastic holders and have a buss bar running along the top. Being li ion they last a very long time and when performance degrades the whole thing can be stripped apart to remove the bad cells and replace them.


    Sent from my iPhone using Tapatalk

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  8. #15
    Mors Kochanski
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    Solar Panels 2 REDUCED.jpg
    Our power shed with solar panels on the roof.
    Gel Solar Batteries 1.jpg
    These are our new gel batteries. Since I last commented on this thread we had a battery with a dead cell. The power was still holding well but we decided to replace the batteries anyway. With these new gel batteries there is no checking of acid levels or specific density. I just check the power level on the power board which has an LCD screen.
    Keith.
    "Two roads diverged in a wood, and I,
    I took the one less travelled by,
    And that has made all the difference".
    Robert Frost

    http://woodsrunnersdiary.blogspot.com/

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  10. #16
    Malcolm Douglas

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    Le Loup , I have always been told that it is bad to mount batteries directly onto a concrete floor , looks like yours are .
    If so you may want to check it out .

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    Le Loup (26-10-17)

  12. #17
    Mors Kochanski
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    Quote Originally Posted by dero View Post
    Le Loup , I have always been told that it is bad to mount batteries directly onto a concrete floor , looks like yours are .
    If so you may want to check it out .
    Thanks dero. I did know that, & our other batteries I did put on wooden blocks. I did not bother this time with the new gel batteries.
    When batteries get cold, they don't charge as well as when warm. Conversely solar panels work better when cold. I think this is the reason they advise not to place batteries directly on a cement floor. We had no problems this past winter.
    Keith.
    "Two roads diverged in a wood, and I,
    I took the one less travelled by,
    And that has made all the difference".
    Robert Frost

    http://woodsrunnersdiary.blogspot.com/

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  14. #18
    Lofty Wiseman

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    I read albeit on the internet the older style batteries leaked their voltage that way easier.
    I am stuck in that habit of keeping batteries off of concrete still.
    As I read it these new ones are different. I am in no way an expert on it.

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    Le Loup (28-10-17)

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