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(Typed all this up and lost it. So here's to round two!) Back in 2019 I had a 15kw system installed atop our riding arena. This included all permits, net metering agreements, parts, labor, installation, et al. Was really happy with the final product. That system has 44 Longi panels...

Hey y'all. I've jumped into this DIY solar thing quite quickly (although I did have a 17kwh grid-tie system installed on top our riding arena four years ago and have been happy overall) but have a question about building my own battery. For sake of completeness and future posts/queries, here's...

I can get 255w Trina Solar panels from a local reseller/scraper for $90. Spec sheet is here, but I think the import piece is IMPP of 8.36A and ISC of 8.92A https://www.ecodirect.com/Trina-Solar-TSM-255PA05-255W-30V-PV-Panel-p/trina-tsm-255pa05.htm My charge controller is an EPEver Tracer4210AN...