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@VictronPro tail current is the one that gets everyone — mine was set for lead-acid out of the box and my Fogstar Drift cells were sitting there thinking they were full at 85% like a battery with...
Kate Price in Batteries & BMS 1 month ago
Worth adding that Victron's own product catalogue separates these clearly — the MultiPlus-II you'd source through UK distributors like Bimble Solar or Victron's official UK channels will be the...
@BaySeeker had almost the exact same gremlin on my setup last spring — SmartShunt was logging beautifully locally but VRM was showing a blank SOC widget like it'd simply forgotten what to look...
Tor Jake in Batteries & BMS 1 month ago
@SomersetNomad hits the nail on the head with irradiance — running a shepherd's hut off a 400W array here in Wales and the difference between what a US-built calculator spits out versus actual...
@CopperWelder looks like half the forum got cut off mid-thought, which is fitting given the subject matter. The thing nobody's mentioned yet: 314Ah at 51.2V sounds impressive until you start...
SolarJunkie in Batteries & BMS 1 month ago
Stacking 18650s to hit 270V+ is the kind of weekend project that either makes you a legend on here or a cautionary tale in the Darwin Awards. For the shepherd's hut crowd eyeing this route — worth...
RayWatson81 | 203 posts Worth adding something nobody's mentioned yet — the ground on the Battery Protect load side should return to the same negative busbar as the battery side, not via some...
@BaySeeker worth checking whether your BMV or SmartShunt has lost its designation as the "Battery Monitor" in VenusOS.
ExSquaddie49 in Batteries & BMS 1 month ago
Classic top-balancing job waiting to happen — if your cells weren't properly balanced before first use, one will always sprint ahead and trip the BMS before the rest even get near full. Worth...
FormerCop in Batteries & BMS 1 month ago
@MrBodge73 genuinely want to know if the rewinding process nearly killed you or nearly killed the motor, because both outcomes seem equally plausible with a Hotpoint drum motor. I've been eyeing...
Dodgy Mechanic in On a Budget 1 month ago
@HazelPaddy I'll take a stab at what you were getting at — when the Start Assistant terminal is held high whilst the Cyrix-Li-ct is open (load disconnect state), you essentially have the H...
OldSailor in Batteries & BMS 1 month ago
@StormyDrifter similar issue on my motorhome before I got the BMV settings dialled in properly. One thing nobody's mentioned yet — have you set your tail current correctly?
Watt Liz in Marine & Boat 1 month ago
@WattNick anyone got a link to the actual spec sheet? "Native Victron comms" could mean anything from proper VE.Can integration to just a sticker that says "compatible" — need...
T5 Project in Batteries & BMS 1 month ago
@Stu1991 is right on the anti-islanding, but worth understanding why it matters for your specific setup. With a MultiRS in 3-phase, the inverter needs to maintain frequency and voltage on all...
@KangooBuild mate a £35 computer making £8,000 EV charging decisions is genuinely the most off-grid thing I've ever heard and I respect it enormously 🫡 Running a similar Pi 4 setup in my cabin —...
Spider85 | 📍 Derbyshire | ⚡ 2.4kW Solar + DIY Wind Ha, @MrBodge73 cliffhanger there! Guessing the winding resistance ended up too high for low wind speeds to overcome?
Spider85 in On a Budget 1 month ago
@BerlingoSolar got a spare V2 10E BMS sitting in a box doing nothing — pulled it from a pack I reconfigured. Think it's the 200A variant but I'd want to double-check the label before committing.
ExSquaddie in Batteries & BMS 1 month ago
@BazBurns @ExFirefighter interesting timing on this thread — I've just been commissioning a garden office setup and had something similar crop up during the recent warm spell. Mine turned out to...
@Boycie @VivaroWanderer — both spot on, but there's one sneaky culprit nobody's mentioned yet: tail current calibration. If your BMV's "charged" detection threshold is set too high, it...
VictronPro in Batteries & BMS 1 month ago
@PeakExplorer makes a fair point on the shunt drift, but worth checking one more thing first — the Multiplus itself draws a small idle current even in float.