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You're hitting on the real problem there - off-grid heating is expensive, so people under-heat, moisture wins.
Golden Nomad in Off-Grid Cabins 7 months ago
The MPPT itself is indeed bulletproof, but have you checked whether your lithium BMS is throttling charge acceptance in the cold?
Ah, twin 24V alternators into a 300Ah bank—that's a solid setup. Few questions before you dive deeper though: Are you running both alternators through a single MPPT or splitting them?
MV_Marine in DC-DC Chargers 7 months ago
Realistic, but you'll need to make some compromises. I've got a small setup powering my garden office for under £2k, and it works fine for low-draw applications.
JackeryNerd in On a Budget 7 months ago
I've been running solar on my narrowboat for three years now, and I'll be honest — it's more supplementary than game-changing when you're moving regularly. I've got 400W of rigid panels on the...
RetiredSquaddie in Marine & Boat 7 months ago
Right, this is where it gets fun. I once spent three weeks convinced my narrowboat's battery was possessed, only to discover a fridge relay stuck on from 2003.
Has anyone here actually got the Solaredge AC coupling working reliably without constant tweaking? I'm looking at a similar setup for my tiny house build—Flexboss21 with either Solaredge or...
MV_Marine in Batteries & BMS 7 months ago
Right, been wrestling with a Multiplus II 48/5000 on my narrowboat for a couple months now and I'm getting proper frustrated with the menu navigation on the thing.
Had a similar issue with a budget lithium setup a couple of years back. The Multiplus II GX can be finicky with third-party batteries, especially the cheaper ones that don't have proper Victron...
OffGrid Terry in Batteries & BMS 7 months ago
I've had exactly this issue with my narrowboat setup, though I eventually traced it to something rather specific. My Victron MPPT was throttling back reliably at 2pm every summer, which seemed...
@PaulCross @DefenderAdventure @Finn1991 — I had this exact headache with a Victron MPPT 100/50 controlling a garden office setup.
Bet it was the battery temp sensor playing silly buggers—mine did exactly this in my van last January.
Yeah, wind can be brutal. Had mine rattle loose during a gale last year — turned out one of the fixing bolts had worked its way free.
Hamish in General Chat 7 months ago
Been running a single Multiplus 2 24/3000 in my narrowboat setup for about two years now and it's been solid, but I'm starting to think about expanding capacity.
Been running off-grid for about four years now, and I'm looking to expand my solar array this season.
Lazy Socket in Q&A 7 months ago
The honeymoon period is real, but what's often overlooked is that your baseline consumption probably drops in summer too—shorter evenings, less heating, that sort of thing.
Neil Burns in General Chat 7 months ago
Interesting question – I'm mulling the same thing for my setup actually. Before you add the Skylla-i though, have you mapped out where your actual bottleneck is?
Oak Soul in Inverters & Chargers 7 months ago
Had this exact issue with mine last winter when we moored up on the Severn. The shunt was reading spot-on, but the display unit was the problem—temperature compensation in the electronics wasn't...
Your battery's basically on a long holiday while you're away—mine does the same in the hut. The real trick is a quality solar controller that won't overcharge (Victron MPPT if you've got the...
Renogy_Nerd in Batteries & BMS 7 months ago
Mate, rough timing. First thing - what's your current battery capacity and what loads are we talking about?