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Old 08-31-2016, 08:04 PM   #11
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Originally Posted by International View Post
Reading what I was told on Bob's site, you should never have charge controller and batteries in same box together because of heat.
I believe the bigger issue is corrosive (and explosive) gasses leaving the battery while charging, not so much heat. But yes separate compartments for sure. Best of luck!
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Old 08-31-2016, 09:53 PM   #12
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Originally Posted by TAOLIK View Post
I believe the bigger issue is corrosive (and explosive) gasses leaving the battery while charging, not so much heat. But yes separate compartments for sure. Best of luck!
Yup. Sulfuric acid fumes will eat your electronics in a hurry.
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Old 09-01-2016, 12:18 PM   #13
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Originally Posted by Iceni John View Post
Yup, eight Sharp 255W panels in two separate tiltable arrays, each array feeding its own Morningstar TS-MPPT-60 charge controller that will charge its own bank of four golfcart batteries. Essentially it's two separate systems running in parallel, with their outputs combined through two 250A Schottky diodes to a common 12V load center.

John
Any idea what the bias voltage /fwd voltage drop is on those Schottkys? Do they conduct at .7V fwd? And, are they gonna get hot while passing a kilowatt through them?

Sorry for geeking out; I return the horizontal and vertical controls.
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Old 09-01-2016, 12:36 PM   #14
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Originally Posted by Iceni John View Post
Yup, eight Sharp 255W panels in two separate tiltable arrays, each array feeding its own Morningstar TS-MPPT-60 charge controller that will charge its own bank of four golfcart batteries. Essentially it's two separate systems running in parallel, with their outputs combined through two 250A Schottky diodes to a common 12V load center.

John
That sounds amazing to me .Super Power.lol I will be small powered compared to you.
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Old 09-01-2016, 12:38 PM   #15
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Originally Posted by TAOLIK View Post
I believe the bigger issue is corrosive (and explosive) gasses leaving the battery while charging, not so much heat. But yes separate compartments for sure. Best of luck!
Thanks and I agree totally .
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Old 09-01-2016, 03:34 PM   #16
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We watched these two kids or young people do their RV, very interesting.

Gone With The Wynns, NOT Gone With The Wind,. Cute tilte,imo.

We learned alot from them and HandyBob and a few others on youtube and of course last but not least 'Skoolie.Net'.
. Wife of International[ what a long name,huh?].



https://youtu.be/Nq5Wz57zdeI
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Old 09-01-2016, 04:00 PM   #17
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Originally Posted by dan-fox View Post
Any idea what the bias voltage /fwd voltage drop is on those Schottkys? Do they conduct at .7V fwd? And, are they gonna get hot while passing a kilowatt through them?

Sorry for geeking out; I return the horizontal and vertical controls.
The diodes are Cole-Hersee brand, designed for use in ambulances and emergency vehicles. Their heatsinks are smaller than those in typical 250A silicon diodes, so I assume they are more efficient and produce less heat. Even when running my 120V air compressor off the Magnum inverter, I could not feel any appreciable warmth on their fins. I was told that Schottky diodes have only about a quarter-volt loss, compared with several times more for regular diodes - does that sound right? In practice their voltage loss really doesn't matter because I'm only using them as check valves to prevent one battery bank back-feeding into the other, not as part of a charging system where voltage loss is more critical. If they knock a small amount of voltage off my DC load center's voltage, it may actually prolong the life of lamps etc that run off that power!

John
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Old 09-02-2016, 01:42 PM   #18
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Still deciding on battery boxes and how to set them up.
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Old 09-06-2016, 11:05 PM   #19
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Is four batteries the correct amount for so many solar panels???
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Old 09-07-2016, 02:49 AM   #20
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That's gonna be one bad mammajamma of a solar power setup. All roof mounted? Does anybody use a setup that is removable? I like to park in the shade, for example and it could be nice to have a "remote" bank of panels that could be positioned for the best sun without having to park in it..:
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