It's a good topic, actually the best solution I've seen is "compressed air energy storage system":
https://news.cgtn.com/news/2021-10-22/China-s-first-compressed-air-energy-storage-system-connected-to-grid--14zydqC3KRG/index.html
Not sure if anything is available on the consumer market, but it's something worth making yourself, maybe.
I expect it to take a lot of space and be pretty loud....
https://news.cgtn.com/news/2021-10-22/China-s-first-compressed-air-energy-storage-system-connected-to-grid--14zydqC3KRG/index.html
Not sure if anything is available on the consumer market, but it's something worth making yourself, maybe.
I expect it to take a lot of space and be pretty loud....
nice if you could scale it.
at op telsa system is costly and glass mat batteries are very heavy
Some where in these threads is some info on a guy that purchased used golf cart batteries and refurbished them on the cheap.
heavy and take up room but he did it pretty cheaply.
maybe loyce could find the thread it is old pre 2018