Based on https://github.com/CyberRad/CoopSolar
Renogy Rover 60A https://smile.amazon.com/dp/B07PXJPSTY
RS485 interface https://smile.amazon.com/dp/B081MB6PN2 Wired using standard ethernet cable T-568B, Green to B-, White-Brown to A+
JBtek RS485, unreliable, maybe because of no ground? https://smile.amazon.com/dp/B00NKAJGZM