You'd need quite a few batteries, depending on your usage ofc. On our weekend house I had a few years back a few panels with used car batteries and during the summer it worked ok-ish, winter time was not that great.
My solar system is currently working great, January wasn't great, but February will produce more than 1Mwh of power: https://monitoringpublic.solaredge.com/solaredge-web/…rkev#/dashboard
Best investment with ROI currently being around 5 years.