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Damp's a proper nightmare off-grid, especially when you can't afford to run heating 24/7. I've dealt with similar on the narrowboat during winter layups. The thing I'd add to what @BevJackson64...
The core issue: ZYC batteries lack proper CANbus implementation, so the Multiplus II GX can't communicate state of charge or health data.
LH_Marine in Batteries & BMS 3 months ago
That's the low voltage disconnect (LVD) kicking in, I reckon. Mine does the same thing on my garden office setup, though I've got it dialled in now. The Multiplus has a configurable cutoff...
Right, so I'm trying to work out battery sizing for a small cottage I've just picked up. It's only used weekends and the odd week during summer — nothing crazy. Currently looking at running...
Davo83 in Q&A 3 months ago
@BorderVanLifer - Cheers for sharing the actual figures. 10kWh is decent, but here's the honest bit: winter capacity needs depend massively on your actual usage patterns rather than some textbook...
Phil Crane in Q&A 3 months ago
Aye, mine does exactly that and it's proper annoying. Got a 48V Multiplus II 48/5000 feeding my cottage setup, and the second we dip below 48V it just decides we've had enough electricity for one...
I've been through this exact decision myself when I set up my narrowboat system, though I went smaller initially at 3kW.
HalfAJob in Inverters & Chargers 3 months ago
Been there with mine on the boat. Worth checking if you've got the temperature sensor actually making proper contact with the battery itself—mine was just loosely taped on and drifting away from...
I've been down this rabbit hole myself, and it's a proper head-scratcher. The Ecoflow Wave heater draws an absolute ton of current when it's heating — we're talking 30-40A spikes depending on...
Ducato Dream in Batteries & BMS 3 months ago
Right, so I've been down this exact road on the narrowboat. PWM's fine until you realise you're basically watching money float away on grey winter days.
Panel Steve in Q&A 3 months ago
The 2pm timing is a dead giveaway — I'd lean toward shading rather than pure temperature throttling.
Been looking at similar for my static caravan setup, though I'm sticking with 12V for now. The real question is—are you using a DC-DC charger or relying on the alternators to balance...
Julie in DC-DC Chargers 3 months ago
Proper laugh that the thread title's in Spanish, but let's crack on—wiring diagrams for DC systems aren't rocket science, just need to respect the electrons. Key thing @Slim's touched on: your...
Right, I'll cut to the chase on this one. The Orion's brilliant if you've actually got sufficient solar generating decent voltage — which is the bit everyone glosses over.
Daily Solar in DC-DC Chargers 3 months ago
Ooh, this one's a proper headache. I had something similar with my static caravan setup last year—the Multiplus just refused to play ball once the BMS went silent.
Great points all round, folks. I'd add that where you're positioning your heating makes a real difference too.
Mate, mine does exactly the same — alarm sits silent until it drops below the threshold, not when it's already sitting there like a sad battery.
@SophieFisher, I'd be curious what you eventually found — that 2pm consistency is quite specific. Temperature throttling is the usual suspect, but it could also be shading creeping in as the sun...
Mate, the real answer is "yes, but..." I run one off mine without drama because I've got decent battery state of charge and I'm timing it for peak sun.
LK_Solar in Q&A 3 months ago
What about tilt brackets or adjustable mounts? I've been pondering this for my setup too, and it seems like fixed panels are fighting an uphill battle when you're constantly repositioning through...
VE_Boats in Marine & Boat 3 months ago