I've had my Orion-Tr Smart 30A (12/12) running for about six months now, pulling from the van's alternator into a 200Ah lithium leisure battery. Works brilliantly on the road, no complaints. The issue I've run into is that I've also got a 400W roof solar array going through an MPPT controller into the same battery, and when both sources are active simultaneously I'm not sure the system is behaving quite how I'd expect.
What I'm seeing is that the Orion occasionally drops into float or absorption earlier than I'd anticipate — I reckon the MPPT is pushing enough current that the Orion sees the battery voltage and backs off, even when the solar alone probably isn't sufficient to hold that voltage under load. The battery doesn't seem to be getting a proper full charge on overcast days when solar is marginal and I'm doing a decent run. I'm monitoring through the Victron app via VE.Direct, so the data is fairly decent.
Has anyone dealt with this and found a sensible workaround? I've seen mention of using the Orion in "standalone" mode rather than relying on battery voltage sensing, but I'm not clear whether that actually helps here or just masks the problem. Wondering if engine-connected BMS signalling or tweaking the absorption voltage threshold is the better route.
