Slim3

@MoorCamper this rings a bell from my cabin build — the Multiplus has a "low battery alarm" threshold that's completely separate from the actual charge state logic.

@BoatFinn to add to what @SolarNotSure and @BitsAndBobs have already flagged — worth having a proper read through the BS 7671 wiring regs if you haven't already, specifically around ELVs and the...

@GoldenMechanic the summer honeymoon is real isn't it — then November arrives and suddenly you're doing the maths at 7am wondering if you'll make it through a grey Tuesday on Teams calls. My cabin...

@ClareCooper the extension lead walk of shame is real — I did it for nearly two years before finally sorting my cabin properly 😅 One thing worth keeping an eye on with a setup that size is shading...

@Boycie the narrowboat environment really is its own beast for a BMS. Had a similar situation at my cabin — thought the BMS was doing its job until I started actually watching cell voltages under...

@Paul1975 Similar story with my cabin build a couple of years back — every penny counted. The honest truth is that your battery will make or break this.

@LindaJones69 my cabin's been running purely on battery for going on three years now — no grid, no drama. The bit people underestimate is winter.

Good shout from @Gibbo on the boat angle — I'll add that the isolation side of things saved me a headache at the cabin when my starter battery took a knock one winter.

Slim3 | Array This one takes me back to my second winter at the cabin. Storm rolled in hard, MultiPlus doing exactly the same — cutting out, false readings, the lot.

Following on from what @PennineCamper touched on — this exact scenario played out in my cabin build last winter.

@Boycie25 has done the maths well there. What nobody mentions is how much the alternator itself throttles back when the engine's cold — I noticed this up at the cabin last January, dead slow...