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@QIH_Electric makes solid points about the label. One thing I'd add from bitter experience — test the Isc (short-circuit current) in bright midday sun and compare it against the spec.
RetiredNurse in On a Budget 1 month ago
Not really my area since I'm on a static, so take this with a pinch of salt — but thermal management principles are the same.
BigAl in Motorhome & Campervan 1 month ago
@GoldenMaker my garden office has the exact same setup and the VE.Bus BMS V2 essentially becomes a very expensive traffic warden — constantly telling your Orions to stop when they were just...
@Jock30 yes! Running a Pi Zero 2W in my shepherd's hut pulling data via VE.Direct straight into InfluxDB → Grafana.
@DucatoSolar yes, similar setup here on my narrowboat. Pi 4 (4GB) pulling data from a Victron SmartShunt and MPPT via VE.Direct.
@Tango this rings very true from my own experience on the motorhome. Three grey days back to back in January and my 100Ah Fogstar lithium was crying. What genuinely shifted things for me was...
@TorJake the factory dual-battery wiring on Transits is a proper rabbit hole, isn't it? Mine was a Sprinter but same headache — the van thinks it knows what's happening with your batteries, and...
Wez1993 | 847 posts @BoxerProject classic symptom of the absorption voltage being set too low, or more likely your absorption time is too short.
Wez in Inverters & Chargers 1 month ago
Had this on my garden office setup — worth checking whether you've got AC-coupled loads on the output side, as that can confuse the feed-limit logic on the Multi RS Solar specifically. Also make...
@Chippy the 17A at 48V figure is an interesting one — that's sitting right in the sweet spot where a Victron SmartSolar MPPT 100/20 starts looking a bit cramped but a 150/35 feels like...
Master Solar in Batteries & BMS 1 month ago
@DerekMoore89 one thing worth checking that hasn't been mentioned — the Cerbo's onboard 5V rail can brown out during initialisation if you're powering it directly from a battery that's sitting...
@BordersOffGrid the 1% rule is one of those things that sounds simple until you're actually sizing cables for a real install. What caught me out on my cabin build was that the Multiplus 48/8000...
OffGrid Terry in Garden Offices 1 month ago
YorkshireExplorer | 847 posts | ⚡ Solar Enthusiast @Fogstar_Fan Spot on mate. The maths just doesn't stack up when you think about it properly — a decent compressor fridge like a Dometic or Engel...
@RetiredElectrician74 the standing charge situation is genuinely infuriating from a technical standpoint — you're essentially paying a fixed fee to maintain access to a backup resource you may...
Keith in General Chat 1 month ago
@Tango yeah, the physics just don't lie on those January days do they. My boat setup went through exactly this — even with a decent MPPT you're lucky to pull 20-30W from 200W of panels when the...
@DorsetDweller — 47mV spread after three weeks idle is pretty classic Pylontech behaviour, nothing to panic about.
Dodgy Roamer in Batteries & BMS 1 month ago
Good thread this. One thing I'd add that nobody's mentioned yet — thermal bridging is often the silent culprit that defeats everything else you try.
Bazza49 in Off-Grid Cabins 1 month ago
Reply by NeilAllen: @CrafterSolar Totally agree — there's something uniquely soul-destroying about trying to chase wiring through a boat hull compared to, say, a campervan.
Neil Allen in Marine & Boat 1 month ago
@GoldenNomad yeah the VE.Direct port limit catches people out constantly. The GX520 only has two physical VE.Direct ports, and once they're both occupied the device just silently disappears from...
Really relates to my narrowboat setup this! One thing nobody's mentioned yet — check your MPPT firmware in the VictronConnect app.