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Right, here's what actually works based on living off-grid for the past three years. Step 1: Calculate your daily usage Track everything for a week. Fridge, lights, laptop, kettle — the lot.
Peak VanLifer in Batteries & BMS 2 years ago thumb_up 3
@CotswoldNomad lovely setup mate. The usable capacity question is crucial — I learned this the hard way in my narrowboat days. Most people spec a 200Ah battery bank and assume they've got 200Ah to...
Forest Jenny in Show Your Setup 2 years ago thumb_up 3
The difference between stationary and marine setups is really about your charge sources becoming unreliable.
Forest Boater in Marine & Boat 2 years ago thumb_up 1
Narrowboat tax is real — you're basically paying premium prices for everything that fits in a shoebox.
Essex Nomad in General Chat 2 years ago thumb_up 5
Mate, voltage drop is the real killer here. If you're going 12V from battery to inverter, even a short run can lose you critical amps with undersized cable. What's your battery bank voltage and...
Anglia OffGrid in Q&A 2 years ago thumb_up 3
Secondhand panels are basically the off-grid equivalent of charity shop furniture — sometimes you find a gem, sometimes you get woodworm.
BitsAndBobs in On a Budget 2 years ago thumb_up 1
I've gone down this rabbit hole twice with my van conversion setup. First time, picked up a batch of 250W Siemens panels from a caravan dismantler for £60 each — bit dodgy looking, one had a...
DriftWizard in On a Budget 2 years ago thumb_up 1
Grabbed some ancient 100W Kyoceras off a dismantled farm setup for next to nothing — still absolute workhorses on the motorhome after five years, degradation's barely noticeable.
RetiredNurse49 in On a Budget 2 years ago thumb_up 1
Been running secondhand panels for about three years now and honestly, mixed bag. Got a set of 300W Canadians for £80 each off eBay — proper bargain compared to new.
Cotswold Nomad in On a Budget 2 years ago thumb_up 5
Right, so the lads have nailed the basics — it's just your battery's fuel gauge. But here's the bit that'll save you money: most lithium batteries hate living at 100% SOC (degrades them faster...
RetiredChef in Q&A 2 years ago thumb_up 2
The real issue with MSW on a narrowboat comes down to your specific kit. I've got a Victron Multiplus 3000VA pure sine on mine, and it was absolutely worth the extra outlay once I started running...
Defender Adventure in Inverters & Chargers 2 years ago thumb_up 2
MSW works fine for basics — lights, kettles, that sort of thing. Where you'll notice the difference is with anything that's got a motor or sensitive electronics.
Marine Gaz in Inverters & Chargers 2 years ago thumb_up 1
You've nailed the technical bit, @FenlandSolar. From my motorhome experience, I'd add the practical side: MSW inverters are cheaper and draw less battery power, which sounds brilliant until you...
LiFePO4Nerd in Inverters & Chargers 2 years ago thumb_up 2
Right, I've been running both at different points in my setup, so I can speak from experience here. Modified sine wave (MSW) is essentially a stepped approximation of a true sine wave — think of...
Fenland Solar in Inverters & Chargers 2 years ago thumb_up 1
The gatekeeping culture around "proper" off-grid living is tedious. What matters is understanding your actual load and matching it to your generation—whether that's 400W or 4kW. On my...
Defender Adventure in General Chat 2 years ago thumb_up 3
Usable capacity's the thing nobody talks about until they're six months in and wondering why the system cuts out at 20% SOC.
Heath Gazer in Show Your Setup 2 years ago thumb_up 2
The pop-top constraint is real, but there's a layout trick worth considering—I've got 600W split across my T5 roof and found that staggering panels actually helps more than you'd think.
Downs Camper in Motorhome & Campervan 2 years ago thumb_up 1
You've got the right chemistry with LiFePO4, but have you considered your actual daily consumption pattern whilst cruising?
Battery Paddy in Marine & Boat 2 years ago thumb_up 5
Spot on about the gatekeeping. I've got a shepherds hut setup with 2.4kW solar and a Fogstar battery bank, and I'm honestly just as "off-grid" as someone running full autonomy on a...
Marsh Lover in General Chat 2 years ago thumb_up 1
@WezFisher and @DalesCruiser are spot on about testing in the van first — that's genuinely the smart move.
SmartSolarNerd in Emergency & Backup Power 2 years ago thumb_up 4