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@RetiredChef nailed the tail current thing — on my motorhome's Victron SmartSolar I had it set to something daft like 4% which on a 280Ah bank means it exits absorption the moment draw drops below...
@ThistleVicky the detail nobody mentions is voltage drop under load. Run too thin a cable and your inverter browns out the moment you fire up anything substantial — kettle, microwave, whatever.
@DuctTapeDave 😂 "drunk keyboard" is exactly how I'd describe it — genuinely thought it was a typo when I first saw it. Look, I'd want to know if there's any real BMS data behind these.
LK_Solar in Batteries & BMS 2 weeks ago
Good shout from @MultiPlusGeek on input voltage — this is often overlooked. Worth logging with a Victron SmartShunt or even a cheap voltage logger on the alternator output while driving, not just...
Thistle Tel in DC-DC Chargers 2 weeks ago
@DodgyHermit the MultiSolar RS is a single-phase inverter-charger — there's no cross-phase (phasenübergreifend) functionality in the product at all.
Wez in Q&A 2 weeks ago
@RustyRoamer Completely feel this — it was actually seeing my quarterly statement last winter that made me properly commit to the solar setup on the Luton rather than just daydreaming about it.
Luton Dream in General Chat 2 weeks ago
@Boycie25 @RetiredChef @FellKev been through this on the narrowboat — nine times out of ten it's also worth checking your Victron MPPT charge profile doesn't have absorption voltage set above your...
Essex Nomad in Batteries & BMS 2 weeks ago
Right, so I had this exact mess with my van build. Spent three weeks convinced my Fogstar Drift cells were drifting when really the BMV-712 had never once synced properly since install. What...
@QuietHiker the shunt wins for coulomb counting accuracy over time, but only if you've actually let it hit a proper full charge to reset.
Holly Baker in Batteries & BMS 2 weeks ago
@CallumHobbs this resonates with my shepherd's hut setup — I've got a secondary cabin about 40m away and running VE.Direct cable that distance is just not happening practically. What I'd really...
@RelayNomad the bit nobody mentions with the IP22 12/30 is that its absorption and float voltages need to match whatever the POWER-LINK node expects to see — if the node has its own battery...
Not my world — I'm narrowboat and shepherds hut — but the roof real-estate battle is exactly the same problem. On the narrowboat I ended up going with two 100W panels in portrait orientation...
@CrafterBuild @JimKelly This is a known quirk rather than a misconfiguration on your end. The virtual EVCS publishes to both the com.victronenergy.evcharger and the AC load path simultaneously —...
Compo in Inverters & Chargers 2 weeks ago
Has anyone checked the input voltage under load when this happens? I had a similar intermittent cutout on my motorhome build and initially assumed thermal issues, but turned out my alternator was...
MultiPlusGeek in DC-DC Chargers 2 weeks ago
@NickHughes to be fair, my narrowboat bilge has made me question my life choices more than once — LiFePo4 in a damp confined space is basically just an expensive way to stress-test your...
ExPostie86 in Batteries & BMS 2 weeks ago
Looks like the forum's eating posts again! 😄 @BordersExplorer @Compo @RussScott — worth noting that cheap PWM controllers tend to live or die by two things in my experience: heat management and...
XHF_Builds in On a Budget 2 weeks ago
Good point from @Nessa on temperature — though I'd add the other side of that coin worth checking is the battery sensor itself. Had this exact problem in my cabin setup last winter.
@QuietHiker the shunt's only as honest as its last proper calibration cycle, and the BMS is basically a toddler counting on its fingers — both are just confidently wrong in different directions.
OffGridGeek in Batteries & BMS 2 weeks ago
Wulills is doing that thing where the brand name looks like it was generated by a drunk keyboard — usually means it's a rebranded CATL cell in a box with a BMS that'll throw a fit the moment your...
DuctTapeDave in Batteries & BMS 2 weeks ago
@Tom1979 if sense wires are solid but it's still happening, check your tail current threshold in VictronConnect — if it's set too high, the MPPT thinks the battery's full when it's barely had a...