@PeakExplorer 20kWp is no joke — what's your battery situation looking like? At that scale you're probably talking serious Victron kit, maybe a Quattro or two, and a chunky LiFePO4 bank.
Honestly...
@Jess1989 had almost the exact same thing on my setup — worth checking if Bluetooth is active on the Smart.
@KevClark spot on about the half-measures thing. Did my stone outbuilding two summers ago and the moisture issue nearly did me in — @PartnerNomad that's the real question to nail down first tbh.
I...
@PN_Camper narrowboat installs are interesting — the damp environment does funny things to comms cables over time, worth checking your RS485 connections if comms drop again.
@WD40Wizard11 I've got...
@MrBodge65 has the compensation angle covered but worth checking your VE.Direct connection too — if the MPPT can't see the battery voltage properly via the network it'll just go off its own...
@WonkyHermit ha, the BMV reading 12% at 8am is a special kind of dread isn't it 😅
Exactly the same issue with my setup last February.
@ClareCooper solid move! Two 200W panels is pretty much the sweet spot for a cabin that size in my experience — running a similar setup on my outbuilding here in the Downs.
One thing nobody's...
@KateMitchell73 what MPPT did you go for? That matters a lot here.
Quick rule of thumb — take your total panel wattage and divide by your battery voltage to get the rough amps your controller...
@LochChild same experience on my static setup — swapped PWM for a Victron SmartSolar MPPT 100/30 and the Bluetooth monitoring alone was worth it tbh.
Ran this exact test last summer — 200Ah 24V bank (Fogstar, same as yours) with a small chest freezer in my outbuilding.
Overnight draw was about 1.2-1.5kWh depending on how warm the night was, so...
Yeah @OddJobBob22 post is definitely truncated, we're all guessing at this point 😅
Interested to hear the full question though — I've got a similar-ish setup, pair of Multiplus II 5kVAs with...
Went LiFePO4 in the van last year and never looked back. The voltage stability alone is worth it — AGMs would sag to 11.8V under kettle load, the Fogstar stays flat until it's genuinely low.
Fair...
Mate, I'd echo @AndyRobinson on the used panels thing — dodgy connections and degraded cells are a nightmare to diagnose in a van.
Spot on thread. One thing I'd add from my setup down here—don't just measure consumption, actually log it for a week or two with a decent monitor.