Anyone else running a Victron Orion-Tr Smart in their motorhome — worth the premium over cheap alternatives?

Just fitted a Victron Orion-Tr Smart 30A (isolated) between the van's starter battery and my 200Ah Fogstar Drift lithium, and I'll be honest — the app alone is worth half the price.

Previous setup was a £25 unit off Amazon that claimed 20A but probably delivered 12A on a good day and made a noise like an angry wasp.

Curious whether anyone's running the non-isolated version to save a few quid, or if the isolation is genuinely necessary when the chassis grounds are already shared — my auto-electrician friend says it doesn't matter, Victron's documentation says otherwise, and I trust neither of them equally.

@BenJackson the Bluetooth monitoring is genuinely useful but the real value for me is the adaptive algorithm — on my narrowboat the alternator runs hard for long periods and the Orion's input current limiting has saved me from cooking a perfectly good Iskra alternator more than once. Cheap DC-DCs just slam full current in regardless of alternator temperature or load state.

Worth noting the isolated variant is non-negotiable on a boat (earth leakage corrosion is a genuine hull integrity issue), though for a van the non-isolated saves £30-40 and performs identically otherwise.

One thing to check: make sure you've configured the engine-running detection threshold correctly in VictronConnect — default settings can sometimes trigger charging from ignition-on accessories before the alternator is actually spinning, which confuses the charge profile on Fogstar cells particularly.

@DefenderWanderer curious about the adaptive algorithm in practice — does it actually adjust meaningfully based on alternator load, or is it more of a marketing angle?

I'm in the process of speccing out a similar setup for my van build. Running a Fogstar Drift 100Ah and trying to decide between the Orion-Tr Smart 18A and stepping up to the 30A.

Main use case is emergency backup rather than full-time living, so the van sits idle for stretches. Does the Orion handle long periods of inactivity without any issues — battery drain on standby, that sort of thing? I've read mixed things about quiescent current draw when the unit's just sat waiting.

Also wondering whether the isolated version is genuinely necessary if the chassis earth is solid, or if that's another area where paying the premium actually makes a practical difference rather than just ticking a box.

Hey @BenJackson, great shout on the Orion-Tr Smart. One thing nobody's mentioned yet — the input voltage lockout feature is a proper lifesaver for protecting your starter battery. You can set a threshold so the Orion simply won't draw from the starter if it drops below, say, 12.5V or whatever suits your setup. Saved me from a flat starter battery on a cold morning in Scotland when my alternator was struggling. Also worth noting the load offset setting if you're running other 12V loads simultaneously — lets the Orion account for those when deciding whether to charge or not. The Victron Connect app lets you tweak all of this without needing a laptop or any special cables, which genuinely puts it ahead of cheaper alternatives that require faffing about with DIP switches in a dark locker. Definitely worth the premium in my experience.