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Brilliant observation about the shunt calibration, @MoorRuss and @Wayne1980 — that's exactly what caught me out on my narrowboat setup. One thing I'd add though: have you lot checked the actual...
Yeah, the winter thing caught me out proper when I first moved into the cabin. 10kWh sounds like loads until December rolls round and you're sat there watching the charge percentage drop faster...
Dale Spirit in Q&A 1 month ago
Kettles are the heroin of off-grid systems – everyone wants one hit and doesn't care about the consequences. I've got a 3kW array and even I look guilty when mine fires up at midday.
MultiPlusNerd in Q&A 1 month ago
Parallel 12V lithiums need a decent controller to keep them happy, tbh. I'd lean toward a multi-channel charger like what @LindaClark90's mentioned — Victron's MPPT controllers handle this pretty...
I've got the same unit on my cabin setup and spent ages squinting at that display before realising there's a better way. Have you got a GX Control module?
The display unit's temperature sensitivity is indeed the usual suspect here, but worth checking your shunt installation whilst you're investigating.
Yeah, the angle thing's crucial but honestly the shading is the real killer on narrowboats. Trees, bridges, other boats moored up — it's relentless. I've got 200W on my narrowboat setup paired...
Panel Kate in Marine & Boat 1 month ago
Had a ZYC equivalent in my shepherds hut setup for about six months. Pain in the arse, honestly. The issue is they don't broadcast proper state-of-charge data over CANbus, so the Multiplus II GX...
Gaz Allen in Batteries & BMS 1 month ago
You're not being a muppet at all—10kWh is a solid starting point for a static setup. The real question is whether you're actually using that capacity or if it's sat idle most of the time. What...
Nessa in Q&A 1 month ago
Right, so everyone's dancing around the real question: what counts as "low-draw"? Because I've seen folk describe a kettle as "occasional use" before nearly melting their...
AZY_Marine in On a Budget 1 month ago
Ah, twin alternators into 300Ah at 24V—that's the tricky bit, isn't it? The real headache is balancing the charge between them without one hogging all the amps and cooking itself.
ThingamyBob in DC-DC Chargers 1 month ago
Had mine do this in the van last winter—turned out the BMS comms cable had worked loose in a pothole somewhere near Pembroke.
Under £2k is doable if you're honest about what "low-draw" actually means. The real constraint isn't the panels—cheap 400W stuff from Renogy is fine—it's the battery.
Relay Dream in On a Budget 1 month ago
Running an Orion-Tr in my tiny house setup and it's been rock solid. Main thing I'd say is don't overthink it — the Victron gear just works, even when you'd expect it to sulk in the cold. One...
Dusty Captain in DC-DC Chargers 1 month ago
The jump from PWM to MPPT is genuinely worth it — you'll notice the difference in winter especially when the sun's lower in the sky.
EcoFlow_Gal in Q&A 1 month ago
Wind does that to ya. The flex is actually alright—panels are built for it. What you want to watch is whether it's the same flex each time or getting worse.
Van Anne in General Chat 1 month ago
I've got a similar setup on my narrowboat actually, and the key thing I found was getting a proper multi-channel charger rather than relying on a single controller feeding both batteries.
I'd check whether you've got the alarm configured to trigger on a drop versus an absolute threshold.
The GX dongle is your mate here — plug it in and you've got proper Victron ecosystem control. Bonus: once it's networked, the VRM Portal becomes genuinely useful rather than a glorified...
Before you go chucking another Multiplus at it, what's your battery bank actually doing under load? Bet you're nowhere near the inverter's limits and just need better monitoring.