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HollyGraham87 | 📍 Welsh Borders | ⚡ 4.8kWh LiFePO4 + 800W solar @CrispyRoamer I ran almost identical numbers last winter when we had a 22-hour outage here.
Holly Graham in Off-Grid Cabins 3 months ago thumb_up 3
@Russ1992 replied: @KangooBuild Nice one getting 3.5kW out of it, but I'd be keeping a very close eye on your Multiplus's sustained output rating versus actual bank voltage under that kind of...
Russ in Off-Grid Cabins 3 months ago thumb_up 9
@BatteryBarry makes a good point about the 12V strain — have you considered just stepping up to a 24V bank if you're going to do this regularly?
Lisa Stewart in General Chat 3 months ago thumb_up 6
@JubileeClipHero5 Rough napkin maths: your 400W array in the UK averages maybe 2-3 peak sun hours daily, so ~1kWh on a decent day — that's approximately 1/24th of a 24kWh Leaf pack, meaning you'd...
Battery Alan in Motorhome & Campervan 3 months ago thumb_up 2
@GlenDixon great timing on this thread — been watching the Fogstar Drift get popular on here lately. @WD40Wizard23 raises a really important point actually.
Boxer Life in Motorhome & Campervan 3 months ago thumb_up 2
@SunnyViking nailed the winter angle, so I'll add the bit that actually caught me out when I moved my tiny house setup off-grid — vampire loads from office equipment. My laptop charger, monitor...
ZI_Sparks in Garden Offices 3 months ago thumb_up 6
@Cleggy51 just to add something nobody's mentioned yet — the JK app (or PC software if you're using that) has a separate low temperature charge protection threshold distinct from the discharge...
Tracy Robinson in Batteries & BMS 3 months ago thumb_up 5
Finally pulling the trigger on a DC-DC charger for the van. Running a 200Ah Fogstar Drift LiFePO4 as my leisure bank, charged from the alternator via a 30A B2B.
Burn Ben in DC-DC Chargers 3 months ago thumb_up 3
@PanelDai my Giandel sits outside the Victron ecosystem like that one sheep who refuses to come in at night — I just wired a Victron Energy Meter on the AC output side and now VRM at least knows...
Battery Paula in Monitoring & System Design 3 months ago thumb_up 9
@HollyGraham83 curious what tilt angle your panels are sitting at? Fixed flat mounts are fine in summer but you can lose a surprising amount in winter when the sun barely gets above 20° elevation.
Stu Knight in Solar Panels & Controllers 3 months ago thumb_up 9
@GlenDixon curious whether you had to swap out your existing charger too, or did it work with what you already had?
WD40Wizard23 in Motorhome & Campervan 3 months ago thumb_up 2
@BatterySam the Rover's SOC reading is essentially useless in my experience — it's just doing a rough voltage-based calculation with no temperature compensation worth speaking of.
Steve White in Solar Panels & Controllers 3 months ago thumb_up 7
Fitted a Multiplus 12/3000/120 in the motorhome back in March. 200Ah of Fogstar Drift LiFePO4, Victron SmartShunt, and a 4m cable run from the battery to the inverter using 70mm² welding cable.
Curly in Inverters & Chargers 3 months ago thumb_up 5
Had this exact scenario in my shepherd's hut setup – alternator on the tow vehicle was throwing out some nasty voltage spikes on a long run.
Fiona in DC-DC Chargers 3 months ago thumb_up 6
Hey @BarryCrane, classic cold weather headache this one. Worth checking your absorption voltage threshold - LiFePO4 cells have a lower internal resistance when cold, so the controller can see...
Chunk in Q&A 3 months ago thumb_up 5
I've got a Victron setup — Cerbo GX, SmartSolar MPPT 150/35, and a SmartShunt — all talking nicely to each other over VE.Direct and showing up perfectly in VRM.
Panel Dai in Monitoring & System Design 3 months ago thumb_up 3
BoatMark | 847 posts @RetiredChef2 Living proof this works — swapped my 28ft out of AGMs into two Fogstar Drift 200Ah LiFePO4s last spring and the weight saving alone stopped my stern sitting like...
Boat Mark in Motorhome & Campervan 3 months ago thumb_up 2
@Gazza22 One thing nobody's mentioned yet — check whether your specific B2B charger has a built-in load disconnect or low-voltage protection on the input side.
Tracy Robinson in Motorhome & Campervan 3 months ago thumb_up 9
CoastalBoater | 📍 South Coast | ⚡ 400Ah LiFePO4 aboard @LDVNomad the core issue is that without a BMV (or similar shunt), your Cerbo has no actual current measurement to work from — it's...
Coastal Boater in Monitoring & System Design 3 months ago thumb_up 9
Not a narrowboat person myself — I run Victron across a van conversion and a static emergency backup setup — but the pattern holds regardless of platform.
GafferTapeKing in Marine & Boat 3 months ago thumb_up 6