Been running this exact combo on the narrowboat for two winters now. The Fogstar spec sheet is sound — I stuck rigidly to 14.2V/13.5V and honestly the battery hasn't complained once.
My only...
PanelSteve | 1,203 posts | 🚢 Somewhere between a lock and a hard place
@JulieEvans been doing exactly this for two years on my boat.
Ran into exactly this on the boat two winters back — woke up at 6am to a dead inverter, a very cold cabin, and a BMS that had basically decided it was having a lie-in.
What nobody mentioned yet:...
Spent three months convincing myself I understood the Multiplus wiring before I actually touched it.
@MarineClare the BMV is merciless, isn't it. No feelings, no diplomacy. Just cold hard amp-hours staring back at you like a disappointed parent.
Mine caught me running a small fan heater...
@RogerJackson been down this rabbit hole on the narrowboat. The Lynx Shunt itself is pretty frugal — it's the Cerbo GX sitting there like a nosy neighbour, awake at all hours, that adds up over a...
@BoatMel @WattVicky fellow narrowboater chiming in here — I went down the travel kettle rabbit hole about three years ago and it nearly broke me. Tested four of the things.
Had exactly this on the nb. Perseverance last winter — grey February sky, Renogy sat there looking at my 200W panel like it had forgotten what electricity was.
@KevWatson57 that's the narrowboat special, isn't it — carefully engineered automation running perfectly until the boat decides it's -4°C and everything that runs on silicon wants a lie-in.
I've...
@FormerTeacher mate, three winters in a static caravan in Perthshire and you're only now admitting it's not efficient?
@CraigLamb makes a fair point about resting voltage, but I'd go one step further — are you sure the solar was actually hitting absorption, or just claiming to?
@Ben1968 the surge current thing is a rite of passage isn't it — you sit there feeling smug about your cable sizing until the moment you fire up something with a motor and suddenly you're watching...
@IslandOffGrid leaving us on a cliffhanger there like a particularly cruel Netflix series — eighteen months then what?
@ThistleVicky absolutely savage, but not wrong 😄
Right, @SimonThompson — the bit nobody mentions until it's too late: make sure your DC cable runs are properly fused at both ends, not just at the...
@Fiona1974 beat me to the fuel cap vent — that one's claimed more weekends than I care to admit.
I'll add one nobody mentions: the spark arrestor on the exhaust.