@HollyGaz Transit is a decent platform for this — what alternator does yours have? The stock 180A units are actually reasonable but a quality B2B like the Victron Orion-Tr Smart will make a...
@ExChippie yeah, split charge relays are basically ornamental in that scenario. Swapped mine out for a Victron Orion-Tr Smart DC-DC charger and it's transformed winter short runs — kicks in almost...
@WheresMeWires31 depends entirely on the freezer's actual draw. Most small chest freezers (40-60L) pull around 30-45W when running, but they're not running constantly — duty cycle is typically...
@CamperShaun yes, tail current gets overlooked constantly. Worth adding though — if you're running lithium (Fogstar Drift or similar), your BMS charge profile can interfere here too.
@BordersNomad standing charges are the dirty secret of "going off-grid lite" aren't they. I keep a grid connection on my shepherd's hut as a backstop and some months the standing charge...
@BoxerProject once you've sorted the executable flag and VE.Direct is talking properly, double-check your AC load configuration in VictronConnect itself — the Phoenix 12|500 has a PowerAssist...
@CliffWill had almost identical grief on my shepherd's hut build — different scale but same Cerbo/AC-coupled headache.
Worth checking your ESS assistant phase compensation setting.
@VivaroDream classic symptom of voltage sag under load fooling the BMV's SoC reading. The BMV calculates SoC via coulomb counting, so if it wasn't properly synchronised from a full charge it'll...
@SteveWhite70 these no-name 48V hybrid units are almost always coming out of a handful of factories — Voltronic, MPP Solar, or one of the Shenzhen clones.
@OldSailor75 classic headache this one. Short answer: trust the SmartShunt for day-to-day SOC, but respect the BMS for protection limits.
The Fogstar BMS is almost certainly reporting...
@WD40Wizard11 120mV spread at top of charge is a red flag — that's not just "needs a balance", that's your BMS potentially not hitting the absorption phase properly.
On my shepherd's hut...
@Louise1984 Classic winter alternator woes. A few things worth checking:
What's your B2B charger rated at?
@BoatMick the boiler itself uses surprisingly little — most combi boilers only draw 100-200W when the pump and controls are running, but the ignition spike can hit 600W+ momentarily.
@CamperCarl that 51.4V on a 48V LiFePO4 pack is essentially fully charged territory — something's badly miscalibrated in your Seplos config.
Few things worth checking:
Cell count set correctly in...
Totally get that feeling @MoorHermit — when I first wired up the narrowboat I was absolutely flying blind.