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I just bought a few packs Battery Hookup's 60280 cells. (cylindrical 60mm x 280mm) I cannot find bus bars for these, the seemingly only option is to make my own. I was wondering if it is reasonable to join these end to end with a taller nut (since both ends are threaded). Or is that a bad...

Thanks! Doing a quick browse, it looks like most solutions use a clear panel to trap the heat. I was thinking of just siding my office with black metal siding and spraying a matte finish on the south face. The cost will be negligible to orient my strapping/rainscreen + sealant to direct air...

I'd save the 400$ and get a cheaper unit like a Midea or Pioneer and spend it on an extra ~3kwH of battery. Not a fan of going down the non-standard route, especially if it will just complicate things.

I have an off grid office that I'd like to augment some solar heating. Currently just using a propane tank. I have looked into the solar air heaters that use black metal flashing, screens, cans, etc with vents at top and bottom. I was wondering if it's possible to just build it into the...

The reason I said extra 3kWh of battery is because you can get that much battery for $400 ;)

I didn't read all the replies, but I'd start with passive house spec insulation - ~R40+ walls and R60+ roof, air seal to < 0.6 ACH50 . Then the smallest HVAC possible - I like mini splits + ERV/HRV + dehumidifier (if necessary).

I have a AIO system with a Battleborn 12v 100ah battery. It's been running for a few months with no issues. I'd like to add capacity with a DIY LiPoFe battery. Can I just wire it in parallel, or are best practices to add the same battery (another Battleborn with the same specs)? If I can't...