I'm still quite confused about how the electrical system in my 2011 SMB Sprinter 2500 works. It was made at the Austin factory in 2012 and has only been slightly modified since (as far as I can tell). The solar panels, Zamp controller, and Tripp-Lite Inverter are all original.
I replaced the two old 65 Ah AGM house batteries with two new high-end Duracell Ultra Platinum AGM Deep Cycle Batteries, 105 Ah, Group 31M, wired in Parallel as the old batteries were. I had my auto-electrics guy (who doesn't know RV systems) install the shunt and head unit / remote of the Victron 712 Battery Monitor system, and that **seems** to be working as configured.
I set the Victron 712 to give a high voltage alarm at 14.3v, and it sent that alarm to me yesterday when the van was on shore power. The Zamp solar charger only gives me the option to have 14.4 or 14.7v as the max voltage, and even the lower rate (which I've selected) is higher than what most AGM batteries are supposed to be charged at when nearly full.
But I don't have any idea as to the basic path that the electricity takes, either from the two (presumably 100w) solar panels or the shore power plug. And I'm not sure what else might need to be replaced to keep from overcharging the new house batteries, and to give me a better picture of what voltage / amperage is going where.
I can try guessing, but really don't know how all this is supposed to work. Can anyone help?
Some guesses...
Layout 1 -
Shore Power goes into the Tripp-Lite Inverter, which then charges the house batteries.
Solar Power goes into the Zamp Solar Controller, which then charges the house batteries.
Layout 2 -
Shore Power AND Solar Power goes into the Zamp Solar Controller, which then charges the house batteries.
Layout 3 -
Shore Power directly charges the house batteries, and possibly Chassis battery.
Solar Power goes into the Zamp Solar Controller, which then charges the house batteries.