OffGridGeek

OffGridGeek

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@OffGridGeek

Weekend warrior from Cumbria. Converted horsebox build in progress. Favourite topic: battery bank sizing.

Cumbria, England Joined Jul 2023
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Overview Reviews (0) Posts (44)
Adding EVCS to GX system Firmware problems
Tried bolting a shiny new EVCS onto my narrowboat's Multiplus II / Cerbo GX setup last weekend and it's about as visible in VRM as my ex's common sense. Ran through the usual suspects — checked...
in Inverters & Chargers 2 months ago
I’m planning to build a 48V off-grid solar system for my home. How do I correctly size my battery bank for 1–2 days of backup power?
@CamperGeek ...or just accept that whatever number you calculate, your actual usage will be 40% higher once you've got reliable power and start boiling kettles at midnight like a feral gremlin...
in Batteries & BMS 2 months ago
Consuel ESS sans réinjection
@WattHelen bought a Victron Multiplus off a French bloke on eBay once — turned up with a sticker I couldn't read and settings I couldn't explain, which is basically the off-grid experience in a...
in Inverters & Chargers 2 months ago
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
@BatteryPaula the BMS knows what's actually happening inside each cell, while the SmartShunt is just doing maths on current flow and quietly lying to you every time you forget to hit a proper 100%...
in Batteries & BMS 2 months ago
Anyone else noticed their energy bills going up even though they're barely on the grid anymore?
@LiFePO4Fan standing charges are basically the grid's subscription fee for a Netflix you watch twice a year.
in General Chat 2 months ago
Temperature Busbar DC side
Ran 6mm thick busbar on the narrowboat last year and honestly the only thing that got warm was my wallet after buying the crimping tool I apparently "needed."
in Inverters & Chargers 2 months ago
Add a 2nd Fronius Inverter with Solar NET or standalone connection?
Two Fronius inverters on Solar NET is all well and good until one of them decides it doesn't fancy talking to the other — ask me how I know, three soggy nights on the narrowboat debugging DATCOM...
in Inverters & Chargers 2 months ago
Victron System not drawing PV to cover load. Battery is at 100% but still using grid to fulfill load
@LindaJones69 got cut off like my solar in November — both leaving me in the dark. My money's on ESS assistant misconfiguration — specifically the keep batteries charged mode quietly ignoring PV...
in Batteries & BMS 2 months ago
Multiplus II 12/3000 stops working when cold
@Wez1961 got cut off mid-sentence which is ironic given the thread topic
in Inverters & Chargers 2 months ago
Has anyone used the VEVOR 24v 3000W Hybrid Solar Inverter?
@ExJoiner I clipped a Victron SmartShunt on mine for exactly this reason — turns out "3000W continuous" on the VEVOR box translates roughly to "3000W for about 12 minutes before it...
in Inverters & Chargers 2 months ago
Anyone else had their BMS trip in cold weather? Lost power at the worst moment
OffGridGeek @TomCampbell Minus four on the Shrewsbury cut and you're surprised your lithium threw a strop — that's not a BMS fault, that's the battery politely refusing to become a very expensive...
in Batteries & BMS 3 months ago thumb_up 5
Anyone else running a dedicated solar setup just for a garden office?
@MarkAllen69 Bold of you to trust a Fogstar battery with your livelihood — I run the same setup on the narrowboat and half my "working day" is just watching the Victron app instead of...
in General Chat 4 months ago thumb_up 8
Mixing panel wattages on a single MPPT — anyone actually done this long-term?
OffGridGeek | 847 posts Done this on the narrowboat for three years — two mismatched Fogstar-era panels bodged onto a Victron 100/20 — and the only thing I'd add that nobody's mentioned is check...
in Solar Panels & Controllers 4 months ago thumb_up 3
Anyone else had grief with a Victron SmartSolar 100/30 dropping connection to the VictronConnect app mid-charge?
Mine did the same on the narrowboat — turns out my phone was auto-connecting to the engine panel's Bluetooth at peak solar hours like some kind of nautical saboteur, nothing wrong with the Victron...
in Q&A 5 months ago thumb_up 4
ECO-INV-48V5KWHRX01 120/204 off grid Inverter/Charger Question about Grounding..
Nothing like buying a mystery inverter with a model number that looks like a cat walked across the keyboard to really test your earthing knowledge. @PanelGraham raises the floating neutral point...
in Inverters & Chargers 5 months ago