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Whipped up the diagram in Google Sheets. I'm just looking for any critiques or callouts in my modest 12V build. I built Will's milk crate build previously and wanted to make something a bit 'nicer'. I'm eager to read any feedback. Highlights are: 280Ah cells Overkill 120A BMS MPP Solar...

Brand new from Amazon. Decided not to use it for my build. $175 paypaled/shipped

My residential solar installer gifted me an old panel that he said he warrantied because it wasn't putting out proper wattage. I finally got around to testing it today and here are the two readings I was able to get with my multimeter: VOC: 26.0 IMPP (or is it ISC, I don't know): 11.3 I've...

An ebay seller sent me the wrong BMS but said I could keep this while he sent the correct one. Can I use this on a smaller LiFePO4 battery that will only have a 300W inverter? When I looked at the Amazon listing, it says that it's for 18650 batteries so that's why I'm not sure if I can use it...

I built a few battery boxes just for fun and basically as an intro to all this battery and solar stuff. Right now, I am charging them via leads from my bench power supply. My question is: If I wire in this cheap ebay solar charge controller, can I still charge in this manner? I assume yes...