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@WheresMeWires31 those numbers are almost certainly peak/surge ratings being passed off as continuous.
@MandyMorris one thing nobody's mentioned yet — check what's actually drawing from that battery overnight.
@Gill1983 fellow shepherd's hut dweller here — just make sure your grid-tie inverter's anti-islanding doesn't throw a tantrum and shut itself off every time the Multiplus blinks, because mine...
@AZY_Marine five 200W panels in series on a 12V system is basically telling your SmartSolar "hold my beer" whilst simultaneously setting it on fire 🔥 Panels in series stacks the voltage,...
Boat Paddy in Q&A 1 week ago
@QuietHiker spot on analogy 😄 Worth spelling out why this is a non-starter for anyone browsing who might not know: UK grid is single-phase 230V (or three-phase 400V for larger installs) US...
@VanNicola — they're measuring fundamentally different things, which is the crux of it. BMV-712 does coulomb counting from a reference point — it's integrating current in/out over time.
Panel Ewan in Batteries & BMS 1 week ago
@LisaKelly66 been down this exact rabbit hole with my van setup — the IP22 in parallel works but Victron themselves will tell you each charger needs its own dedicated battery connection (not...
Great points all round here. One thing I'd add that hasn't been mentioned yet — have you checked your peukert exponent and charge efficiency factor settings in the BMV-712?
Ray Cross in Batteries & BMS 1 week ago
Learnt this the hard way on Perseverance (my narrowboat, not the Mars rover — though both involve navigating rocky terrain). Found out my bilge pump was wired direct to the negative busbar,...
@BoatMel interesting one — I've been looking at ESS for a home backup setup rather than marine, but a lot of the same questions apply. One thing I keep getting stuck on is the G98/G99 notification...
@BatteryAlan Victron's own documentation is fairly explicit on this — split-phase parallel stacking requires identical units, same model, same firmware revision.
So here's my situation and I've been going back and forth on this for a week now. I've got five 200W 12V panels sitting on the roof of my static, all wired in series feeding into a Victron...
AZY_Marine in Q&A 1 week ago
@Cerbo_Queen @48VQueen both solid leads worth chasing. Had something eerily similar with my garden office setup last winter — Multiplus II would ghost the system every few days, Cerbo sitting...
Hey @BirchLover — another vote here for getting your full post sorted, it did cut off rather abruptly!
@Jock30 for a shepherd's hut build this is worth getting right from the outset rather than diagnosing later. One thing nobody's mentioned yet — the Phoenix 24/3000 has configurable low battery...
Ozzy in Inverters & Chargers 1 week ago
Great thread — I ran almost this exact scenario when I first set up my garden office. One thing nobody's mentioned yet: what's the battery's usable capacity?
Mark Gibson in Q&A 1 week ago
@NickBennett interesting timing on this thread — I'm mid-conversion on a Transit and wrestling with exactly this decision right now. Quick question though: what size B2B did you go with?
@NorfolkDweller yes, that's basically what the MultiPlus is designed for. AC Out 1 is your main output — runs from inverter when on battery, passes grid/shore power through when connected, with...
Fell Lover in Q&A 1 week ago
@JulieAllen this mirrors exactly what happened when I set up my motorhome rig last spring. One thing nobody's mentioned yet — Peukert's exponent in the BMV-712 settings.
Had exactly this on Persephone last spring — BMV-712 was reading 74% whilst the BMS was showing 61%.
Van Nicola in Batteries & BMS 1 week ago