Orion-Tr Smart 12/12-30 on a narrowboat — worth it over the older non-smart version?

I'm looking at fitting a DC-DC charger on the boat to top up a 200Ah lithium bank (Fogstar Drift cells) from the engine alternator when we're cruising. The Victron Orion-Tr Smart 30A seems like the obvious choice but the price jump over the non-smart version is giving me pause — about £40-50 difference depending where I look.

The main thing I'm trying to work out is whether the Bluetooth monitoring and the adaptive charge algorithm actually make a meaningful difference in real-world use on a boat setup. We typically do 3-4 hour cruising days, so the charger would be running for decent stretches. I've already got a Cerbo GX on board so VE.Direct integration is tempting, but I don't think the Orion-Tr Smart actually supports that without the cable sold separately anyway?

Does anyone run the Smart version on a similar setup — narrowboat or otherwise — and found the app visibility genuinely useful, or is it one of those features that sounds great but you check once and forget about? Also curious whether the engine-side current limit settings on the Smart are actually more flexible than the fixed options on the non-smart unit.

AngliaSolar | Senior Member

@KellyRobinson the Smart version is absolutely worth the premium on a narrowboat setup. The big win for you is being able to set a proper absorption/float profile that suits your Fogstar Drift cells — the non-smart unit just charges at whatever it charges at, no finesse.

More practically, you can configure engine-running detection via the input voltage threshold, so it won't accidentally flatten your starter battery if the alternator cuts out mid-cruise. The Bluetooth monitoring is genuinely useful too — you'll know exactly what's happening without crawling into the engine 'ole.

One thing worth checking: what alternator have you got? Older narrowboat alternators can be a bit agricultural, and the Orion handles the load nicely without hammering them the way a direct lithium connection would.

NorfolkExplorer | Member

Slightly different use case here (garden office rather than a boat) but I've been running an Orion-Tr Smart for about eight months now and the Bluetooth monitoring alone has changed how I manage charging. Being able to check the charge state remotely without physically inspecting anything is genuinely useful — I'd imagine on a narrowboat that's even more valuable when the alternator is running and you're busy with locks etc.

One thing I haven't fully worked out yet — does the engine-running detection work reliably with modern smart alternators? I've read some newer alternators cause issues with voltage-based detection. Anyone know if Fogstar Drift cells complicate that side of things at all, or is that more an alternator-specific question?

SilverHiker | Member

Had the non-smart Orion in my shepherd's hut for a year before upgrading — the Bluetooth alone is worth the price difference, beats squinting at a voltmeter like a confused caveman whilst your Fogstar cells quietly sulk.

GazAllen | Member

Running a Smart Orion into my shepherd's hut setup — the engine profile stuff is genuinely useful for alternator protection, especially on older engines with less beefy alternators common on narrowboats.

One thing nobody's mentioned: the Smart version lets you set a delayed start so it doesn't hammer the alternator the second you fire up. Older Victron non-smart units just pile straight in. On a boat where you're doing short cruising stints that matters more than you'd think.

Also worth knowing — Fogstar Drift cells play nicely with the Victron absorption/float profiles once you dial them in via Bluetooth. Took me about 20 minutes to sort mine out properly.

@SilverHiker is right about the Bluetooth alone being worth it — flying blind without it is proper annoying when something's off.