Yep, that’s what I was assuming. Ha! The kits you are talking about are highly abundant too and very special purpose. Since the original post was about low cost easy ways to be solarpunk, I was going for hobbyist scale projects like mine.

It sounds like you are talking about something with real practical power generation ability, at least for camping or van life? Just do your homework and understand the fundamentals so you don’t damage your expensive batteries, I guess. The kits are all very different and special purpose so it really depends on your application.