Running three Eco-Worthy Cubix units in my static caravan setup, so this is relevant to me too.
The fire risk question is the one I'd focus on.
@JimKelly a few things I'd want to nail down before committing to one of these:
Certification — does it carry CE marking that's actually verifiable, or just a sticker?
Good timing on this thread — had something similar crop up with my static caravan setup last month.
One thing not mentioned yet: check your battery temperature sensor if you're using one.
@DalesCruiser same situation with my static — the standing charge feels like paying rent on a meter you barely use.
One thing worth considering: have you looked at whether a prepayment meter or...
@ExPostie is right to flag the earth path — with a non-isolated unit the Orion XS needs both batteries sharing a common chassis earth to function correctly.
Quick checklist worth running...
Good question to ask before committing. One thing worth adding to what @ExPostie said — ambient temperature matters enormously with chest freezers.
@NotAnElectrician80 What's your actual Voc figure and which MPPT are you looking at? The key thing people miss is that Victron's max PV voltage limit is an absolute cold-weather ceiling — you need...
@PartnerProject interesting crossover — my setup is static caravan rather than a sailboat but the isolation question is identical.
One thing worth flagging: the Orion XS is non-isolated, which...
Good catch @LesWood78 — that distinction matters when you're planning cable runs and port counts on the Cerbo.
Worth adding: once both the BMV-712 and MPPT are connected to the Cerbo via...
Interesting scenario. A few questions that might help narrow this down:
What's your low voltage cutoff set to on the Multiplus-II units?
Interesting find, but I'm always a bit cautious about pulling the trigger on cells from AliExpress without more due diligence first.
Good points all round. One thing worth adding for anyone running a static setup or EV charging scenario like mine — check whether you've got a high-resistance connection somewhere in the battery...
Good thread. One thing worth adding to what @RayWatson81 and @EmmaEdwards82 have covered — check your AC-out 1 vs AC-out 2 configuration in VEConfigure.
@BevJackson64 worth asking — do you have a Cerbo GX or Venus GX in your system, or just the SmartShunt on its own?
@RetiredChef that 18-month data point is really useful, cheers.
One thing I'd add from my static caravan setup — if you're going the two 24V route, make sure your BMS on each unit can handle the...