Just picked up a second Victron Orion-TR Smart 12/12-30 to run alongside my existing one, thinking 60A combined ought to keep my 200Ah Fogstar Drift LiFePO4 happy on long drives. Took about an hour of cursing at the VE.Direct cables before I got them talking to each other properly through the app.
The synchronised charging profiles are almost magical — both units ramp up and down together, no weird voltage fighting. That said, I'm seeing the pair occasionally drop to about 45A combined rather than the full 60A, and I can't work out if that's the van's alternator throttling back or the Orions being precious.
Running off a stock 110A alternator in a 2019 Transit, so I'm not expecting miracles, but the maths should be closer than this. Anyone tuned their absorption voltage down slightly to squeeze more consistent amps out of a parallel pair?