I found this battery but have no idea what it is for:
24V 3200mAh rechargeable Lead Acid Closed type battery
it is cheap and maybe too good to be true. sorry for my ignorance, I know nothing about batteries.
this is the best I can get here: https://oknow.gr/online-store/fotovoltaika/mpataries-fotovoltaikon/%CE%BA%CE%B1%CF%84%CE%AC,%CF%84%CE%B9%CE%BC%CE%AE/results,1-120.html?keyword=
we have 350-360 sunny days per year. I am thinking to get 9-10 385W solar panels (24V system), inverter 4kW and probably 12 batteries 2V/500 Ah. I also have a 6 KV petrol generator.
I wanted a wind turbine as well (with less solar panels) but the guy who sells them advised me against. he...