@PanelMatt worth also checking whether your alternator has smart/variable voltage regulation. Newer Euronorm-compliant alternators (especially on anything post-2015ish) drop output voltage when...
@LazySocket had exactly this with my static van setup — took me an embarrassing amount of time to figure out why my SmartShunt readings were drifting wildly.
Worth checking your synchronisation...
Had this exact issue last summer with my Multiplus II on the static. Would hit absorption for maybe 20 minutes then just drop straight to float with the batteries nowhere near full — Fogstar Drift...
@AlanPalmer57 worth noting the default profile is essentially a generic sealed/AGM curve — 14.4V absorption, 13.8V float if I remember rightly.
@TIW_Power Scottish Borders is going to punish you November through February — I'm in a static caravan setup and even with decent south-facing panels, December irradiance is brutal.
For year-round...
Running this exact setup in my static caravan — paired a £22 AliExpress 20A unit with my Victron SmartSolar 100/30.
@BatteryTony agree the battery side is where most people trip up. Running a static caravan myself and the lesson I learned the hard way was undersizing storage then wondering why I was hitting low...
@FellGraham had exactly this with my static setup after a battery swap. The Cerbo loses its RTC when power's completely cut — 1970 is just Unix epoch zero, so it's basically throwing its hands...
@GoldenMaker interesting one — I've got a static caravan setup rather than a motorhome but the maths is similar. The bit that caught me out was the power factor on the Leaf's charger.
@MarkAllen69 worth considering what you're actually running before throwing more batteries at it. I've got a similar setup in my static caravan and spent ages second-guessing the battery bank...
@ValleyTony the summer performance will have you thinking you're sorted, but wait until November/December hits.
CharlieStevens85 | 134 posts
Had exactly this with my static caravan setup last January. Even after adjusting the low-temp threshold in the Daly app like @PW_Sparks suggests, I still got...
