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Old 14-07-2012, 08:41   #46
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Since PV panels are primarily current sources almost any panel with a sufficient voltage can be connected to a 12 v battery even high voltage ones. It's just that for high voltage ones the 12v operating point is very inefficient ( or more inefficient ). Hence if you loose your mppt controller you can still use the PV panel.

Dave
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Old 14-07-2012, 09:14   #47
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Re: Best Low-Cost Charge Controller?

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Since PV panels are primarily current sources almost any panel with a sufficient voltage can be connected to a 12 v battery even high voltage ones. It's just that for high voltage ones the 12v operating point is very inefficient ( or more inefficient ). Hence if you loose your mppt controller you can still use the PV panel.

Dave
Small pirating here to say hello to a friend--

Hi Dave-- how have you been? I still struggle with time that has prevented me from assembling the watermaker. All---make that most--of the software is completed and tested with the exception of the motor. Have all piece parts including the pressure vessels except for the actual filters. I intend to use a step motor, first with up/down manual controls and later with feedback to track the water temperature. Just need to start assembling the thing ASAP. MOre later--

Foggy
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Old 14-07-2012, 10:41   #48
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Re: Best Low-Cost Charge Controller?

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Small pirating here to say hello to a friend--

Hi Dave-- how have you been? I still struggle with time that has prevented me from assembling the watermaker. All---make that most--of the software is completed and tested with the exception of the motor. Have all piece parts including the pressure vessels except for the actual filters. I intend to use a step motor, first with up/down manual controls and later with feedback to track the water temperature. Just need to start assembling the thing ASAP. MOre later--

Foggy
hopefully - pictures or it aint happening


keep going Foggy, Im up to my neck in micro controllers as I started a new business, keeps me away from too much sailing now ,,,,waaahhh

Dave
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Old 14-07-2012, 12:57   #49
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Re: Best Low-Cost Charge Controller?

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hopefully - pictures or it aint happening


keep going Foggy, Im up to my neck in micro controllers as I started a new business, keeps me away from too much sailing now ,,,,waaahhh

Dave
Next week when I get home I will send some pictures of my displayed data and if you're bored, a copy of 1000 lines of source code

Foggy
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Old 14-07-2012, 15:00   #50
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Re: Best Low-Cost Charge Controller?

I was just looking at the Morningstar sunsaver for my application. Warning! It has an automatic equalization in flooded mode. I have AGM batteries which like to have the 14.4V setting of a flooded battery, but don't like to be equalized. I'd have to put it on Gel mode which only has 14.1V. Not the best controller for my application.
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Old 14-07-2012, 15:10   #51
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Re: Best Low-Cost Charge Controller?

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Next week when I get home I will send some pictures of my displayed data and if you're bored, a copy of 1000 lines of source code

Foggy

great PM me when you get a chance, id like to see the components

where did you get the pressure vessels?

dave
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Old 14-07-2012, 15:24   #52
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Re: Best Low-Cost Charge Controller?

Dave--

I will get back to you, I hijacked this thread so I am pushing my luck--

Foggy
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