diy solar

diy solar

My first build

Suthrn1

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Feb 9, 2020
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Hi everyone, working on my first solar project. It's a big one and it has taken some time from start to where I'm at. I can't say start to finish as I know there will always be updates, new technology's etc...20200105_103446.jpg20200105_103446.jpg20200202_161001.jpg20200201_191059.jpg602548658.jpg
 

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Hey Jason, they are Deka 1 200AH AGM batteries. Not perfect for solar but a steal so couldn't pass them up. They run 600 plus each and I have 80 of these things.
 

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Hey Jason, they are Deka 1 200AH AGM batteries. Not perfect for solar but a steal so couldn't pass them up. They run 600 plus each and I have 80 of these things.
Neato!

Have ya seen the BYD packs yet? 24V 200ish AH used packs in the $450 price range, LiFePO4 chemistry. (I have 8 of them) We have quite a few people on here getting them going, about 4 kWh each.

Your system looks very well designed. Is that about 24 kW of inverters?
 
I believe these are the ones david has on YouTube. They are 24v modules and need a rewire for the BMS? I have been looking at them, wondering if 8 would handle my needs
 
I don't see why you can't have 12 or 16 or 24 for that matter.

I made a very easy bms adapter for mine.

 
I know nothing about BMS currently, wont have a choice but to learn soon...
 
I know nothing about BMS currently, wont have a choice but to learn soon...
I am pretty sure you do not need a BMS on agm. But it is really rather easy to install and use. It gives you an eye on each of your batteries and let's you know if you have bad one really soon.

Agm much easier and more forgiving if you abuse a little. Lithium iron phosphate if abused, can't be fixed, only replaced. So the bms just keeps the bumper rails tighter.
 
Roger that, I'm thinking on moving to the LiPo4 modules in the near future and will need a BMS at that time...
 

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Hi everyone, working on my first solar project. It's a big one and it has taken some time from start to where I'm at. I can't say start to finish as I know there will always be updates, new technology's etc...View attachment 7030View attachment 7030View attachment 7035View attachment 7037View attachment 7039

HOLY SMOKES!!
72 panels! What is the KW on that PV array? I just wish I had that kind of space! Wow.
Just... wow.

interesting combiner boxes. Care to explain in detail what you have here?

I am guessing this is COMPLETELY off grid...

hell, you could likely power a grid! That's nice!

I hope those are at least 250watt panels! Even at 100, that’s a LOT of watts. If 350W, they can output 25,200 watts, or around over 151KWh on an average 6sun hour day... holy that’s a lot.
 
Supervstech, I share your excitement.....these are REC 260 watt panels, I am running 3 strings of 6 per combiner on 15 amp midnite solar double fuses to handle the volts. One rack will have two combiner boxes feeding two midnite solar classic 250's which in turn will charge a pair of 4S,4P Deka Unigy 1 12 volt 200AH battery banks paralleled, 32 total per side, wired to a bus bar ending in two SMA 6048US10 inverters split phase 220 volt. Now multiply that by two for a complete setup. I have 9 more panels I will setup to another controller to charge the remaining 16 batteries, 80 total, will add another inverter at a later date, until then, they will just float. Don't plan on these lasting but 4 to 5 years, if that and am looking at the Lipo4 modules.
 
So, 18,720 watts worth of panels... those batteries will simply be for surge demand, and night/cloudy day use... they should sit full all day with the sun powering most demands easily. 390AMPS of PV feeding the sunny boys, and leftover going to the batteries. In this usage, the LA batteries will be happy happy happy... you may even get 10 years out of them.

NICE!
 
Thanks, I would hope I can get that kind of life out of these LA Batteries.....lol
 
Yesterday was a overcast day and I pulled In 8kwh In just over 2 hours according to the charge controller's
 
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