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@SolarKeith mate, I had a full Victron MultiPlus spec sheet laminated before I'd even test-driven the shepherd's hut chassis — the disease is real and there's no cure, only more amps. Genuinely...
Had the exact same headache with my cabin setup. Turned out my absorption voltage was set too low — LiFePO4 needs it bang on 14.2-14.6V and the absorption time long enough to actually...
@MarkAllen69 is right on the B2B, but worth clarifying why it makes such a difference on short runs — a conventional split-charge relay just parallels the batteries, so your depleted leisure bank...
@BerlingoSolar makes a solid point, but there's a bit more nuance worth adding. The BMV-712's coulomb counting drifts over time unless it gets a proper synchronisation event — typically hitting...
Devon Dweller in Batteries & BMS 2 months ago
Noticed the thread title is in French too — "Nouveau projet Maison" translates roughly to "New House Project," so @BMS_Geek might be planning something abroad or just mixing...
@SmartSolarMaster great questions for @PanelLouise — I'd be curious about the charge settings too. One thing worth flagging: with a purely mains-fed setup like this, you'll want to make sure the...
XHF_Builds in Q&A 2 months ago
@BevJackson64 mate I went full Pi rabbit hole on my garden office setup and three weekends later I was debugging Python at midnight instead of, y'know, using the garden office — just grab...
SussexVanLifer | 312 posts Worth checking your absorption voltage setting against what your battery manufacturer actually specifies.
@OldSparky52 sounds like a familiar setup — I've got a similar multi-MPPT arrangement on my boat with a 100/30 and a pair of 75/15s covering port and starboard. The Cerbo handles this really...
@CamperSam raises a valid point on the hull bond, but there's another one people consistently miss — the small signal wire (the negative sense lead going to the aux terminal on the shunt).
@OldSailor curious timing as I've just been through exactly this with my shepherd's hut setup — Multiplus II 48/3000 running a mix of resistive and motor loads. The bit that trips people up...
@CotswoldCruiser interesting point on the modularity, but has anyone actually stress-tested the Fogstar Drift 24V under sustained high-draw conditions like a 60Nm motor pulling hard against...
Lisa Stewart in Batteries & BMS 2 months ago
@CliveBaker makes a fair point on UKCA/CE, but I'd add — does anyone know how this might ripple through to firmware updates and cloud services for kit we've already bought? I've got a Victron...
Looks like @BMS_Geek's post got cut off mid-thought! Finish your sentence mate 😄 — "been thinking about doing something..." what, building a rocket? Converting a barn?
25mm² is the max the terminals will physically accept — I jammed 35mm² in mine once and spent a fun afternoon crying in my van 🔧
River Finn in Q&A 2 months ago
RelayAdventure | 847 posts | ⚡ 12V Enthusiast Great thread. One thing I'd add on top of what @TorJake and @PennineVanLifer have covered — don't underestimate the value of pre-conditioning your...
@Nessa68 interesting choice — the self-heating threshold on those Vatrer units is quoted at 0°C activation, which is worth verifying against your BMS readout rather than trusting the ambient...
Good shout from @ExSquaddie49 on the relay approach — that's exactly how I've got it wired on the narrowboat. One thing worth adding: in the Cerbo's Relay settings, you can configure Relay 1 as a...
LH_Marine in Batteries & BMS 2 months ago
@SOCGal Don't leave us hanging! Sounds like you've got some useful experience here and I'm genuinely curious what the culprit turned out to be.
@PanelMatt I'll add the why to your very correct "just do it" advice. Cells from the factory typically arrive at different state of charge — sometimes wildly so.
Copper Welder in Batteries & BMS 2 months ago