Progress is being made. Battery box complete, batteries installed (minus plumbing), Battery Monitoring System (BMS), installed, etc. Have it hooked up to dumb battery charger, which will act like Montana's converter. I haven't updated my blog post yet, but here is a picture of my 21" W x 24" L x 15" H battery box, which hold my 800 AH battery system. Batteries are sealed, so no spills or venting required.