solar

Discussion in 'Tech/Mech General' started by Wildbill, Nov 24, 2013.

  1. Wildbill

    Wildbill Funster

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    solar panel putting out 13.84 v but after regulator 1.38 amps is the regulator us?
     
  2. Wildman

    Wildman Read Only Funster

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    you are mixing your units Bill, volts measure the state of charge of your battery, the amps is the RATE of charge or discharge, if you are reading 1.38V you have a pretend battery or a flat AAA, hee hee.
    double check your readings with a separate meter. 13.8 is a fully charged battery and the regulator will stop it charging further so amps will be virtually zero. Even a low battery will not receive much of a charge at this time of the year a fraction of an amp would be normal apart from midday with the sun full out.
     
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  3. Wildbill

    Wildbill Funster

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    thanks' roger that is now as clear as mud now to me :Eeek:
    but I still thing regulator is us
    how can I find out
     
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  4. gwyntaxi

    gwyntaxi Funster

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    solar output

    Hi there,
    you dont say what size panel you've got,e.g.70watt or what but on a cloudy-ish day like today i'd say that 1.38 amps is about right,you could put a multi-
    meter across the plus&minus terminals on the output side of the regulator
    with the solar panel covered over with a sheet of cardboard or towel and you
    should have a reading of 0 amps then remove towel/cardboard and you should have a reading of 1.38amps or higher if bright and sunny just a basic test really.hope this helps you:thumb::thumb:
     
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  5. cmcardle75

    cmcardle75 Read Only Funster

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    Probably not. That is just under 20W. Not that bad for late November. A fancy MPPT controller might squeeze a bit more out in such marginal conditions. The controller will also drop the amps if it thinks the battery is full to prevent over charging, so you should only really check the ampage when you know the battery is at least 20% discharged.
     
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  6. Techno

    Techno Funster Life Member

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    A multimeter set to the amps scale must be connected in series with the positive to obtain a current reading
    Connecting across the +ve -ve will not read amps
     
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  7. Wildbill

    Wildbill Funster

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    reding 1.38 uncovered reding covered 0 thanks simple solution that works cheers bill :BigGrin:
     
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  8. cmcardle75

    cmcardle75 Read Only Funster

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    Indeed. It will read large sparks and new multimeter. As a general rule, never use the amps setting on a meter unless you know what you are doing!
     
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  9. pappajohn

    pappajohn Funster Life Member

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    but it will fry your meter. :Doh:
     
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