Those would be crap lead acid batteries at $100. I have 500 Ah in 4 AGM batteries that cost me $1200. If all that 835 is usable I'd have to spend $3600 to come

Those would be crap lead acid batteries at $100. I have 500 Ah in 4 AGM batteries that cost me $1200. If all that 835 is usable I'd have to spend $3600 to come close with the same AGM's I'm using now.