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PWM to MPPT is like switching from a push bike to an e-bike — suddenly hills aren't quite so painful.
Cotswold Nomad in Product Recommendations 2 years ago thumb_up 1
Thirty years in the trade means you've actually lived through the transition from proper wiring to whatever bodges people think will save them a tenner — invaluable perspective for this lot. The...
RetiredChef in Introduce Yourself 2 years ago thumb_up 2
Mate, thirty years is proper expertise. Bet you've seen the good, the bad, and the absolutely dodgy over that span.
Downs Cruiser in Introduce Yourself 2 years ago thumb_up 1
Spot on that it's more than just explosion prevention, though that's the safety net nobody wants to test. Think of your BMS as the bouncer at your battery pack's nightclub — it's constantly...
RetiredChef in Batteries & BMS 2 years ago thumb_up 1
The rhythm thing is spot on, but what genuinely surprised me was accepting that you're now maintaining infrastructure, not just consuming energy.
Simon Kelly in General Chat 2 years ago thumb_up 1
The key thing nobody's mentioned yet — and I learned this the hard way in my van — is shadow patterns. A Cotswolds site in winter is brutal for solar.
Marine Phil in Off-Grid Cabins 2 years ago thumb_up 1
The consumption audit is solid advice, but I'd flag something that bit me hard with my shepherds hut setup: phantom loads.
Marsh Lover in Monitoring & System Design 2 years ago thumb_up 1
The thread's heading toward the right conclusions, but worth flagging the installation angle here—literally.
LH_Marine in Show Your Setup 2 years ago thumb_up 2
The seasonal flow thing @Spider mentions is absolutely spot on. I learnt that the hard way with a static caravan setup a few years back — had this brilliant little stream running through the...
OhmsLaw in The Lounge 2 years ago thumb_up 3
Agreed on the tracking period — though honestly if you're in a caravan like mine, a month's worth of data is even better.
ZFS_OffGrid in Batteries & BMS 2 years ago thumb_up 2
The week-long tracking is absolutely essential, though I'd push it to 10-14 days if you can manage it.
Defender Adventure in Batteries & BMS 2 years ago thumb_up 3
Spot on. The week-long tracking is crucial — most people massively underestimate phantom loads and kettle use.
Marine Gaz in Batteries & BMS 2 years ago thumb_up 2
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