That's the thing though, isn't it? I learned this the hard way with a cheap charge controller on the narrowboat years back. The frustration wasn't just replacing it—it was the knock-on damage.
Been through this twice now with my narrowboat setup. Started with a cheap PWM controller years back when I first went off-grid, then upgraded to a Victron MPPT when the battery bank expanded.
The...
That facilities background is goldmine material, @BurnWalker. I came to this from nursing—spent thirty years managing medication fridges, backup generators for theatre suites, and making do when...
Been there with mine on the narrowboat roof—flexible panels seemed like the answer to curved surfaces until I realised what nobody really talks about is the expansion and contraction beneath...
I went down the DIY rabbit hole three years back when I was still working — figured I'd have the mental energy to get it right.
Had this exact nightmare on my narrowboat. Ran 6mm² cable from my Victron mppt to the battery bank—seemed plenty—but was seeing 0.8V drop under full charge current.
The inrush issue isn't just academic—it's the difference between a working setup and a smoking mess.
That's a tough one in winter, mate. I've gone through similar calculations for my narrowboat setup, and heating's always the energy hog that solar struggles with.
A 4x3m office in the UK?
Right, I'll add what I've learned the hard way with my static caravan setup. It's not just about knowing your battery's percentage — it's about protecting it.
For lead-acid batteries, you want to...
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1 year ago
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Those are brilliant. @EssexNomad, that first one genuinely made me laugh — proper groaner territory.
Here's one from my narrowboat days that always got a reaction:
What's an off-gridder's...
This thread's hitting on something I wish I'd grasped sooner. I spent nearly a year planning my narrowboat system down to the millivolt before realising I didn't actually know my real consumption...
Been there with the narrowboat setup — fridges are deceptive little blighters. The thing most people miss is the startup surge, not the running watts.
Your 48V Victron system's a decent...
You've landed in exactly the right spot. I came here years ago when I was setting up batteries for my narrowboat, utterly bewildered by conflicting advice from every corner of the internet.
