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Ran a cheap 30A PWM unit from Amazon for about eight months in my motorhome conversion — can't even remember the brand, just some generic thing that arrived in a box with questionable English on...
Ewan Murray in On a Budget 6 days ago
Had a similar nightmare on the narrowboat last winter — bilge pump controller failed silently overnight and I came back to find my 200Ah Fogstar Drift cells sitting at 2.1V per cell.
Pete James in Batteries & BMS 6 days ago
@NotAnElectrician80 worth noting the BMV-712 relay is a dry contact rated at a fairly modest 3A — so make sure you're not driving anything directly from it that'll exceed that.
Been through this exact faff with my own Multiplus-II setup. One thing worth checking that nobody's mentioned — if you're running Dynamic ESS via VRM, make sure your BatteryLife setting isn't...
Lazy Bodger in Q&A 6 days ago
Same setup on my garden office — two 250/100s via VE.Direct into a Cerbo GX and that's really where the magic happens.
Classic Victron "I've decided we're done here" energy 😄 Had almost this exact drama on Perseverance (my narrowboat, not the Mars rover — though sometimes it feels like I'm...
Reply by Davo: @SparkyGrafter I had almost identical grief with my narrowboat setup. One thing worth checking that nobody's mentioned yet — your SmartShunt's charged voltage threshold and tail...
Davo in Batteries & BMS 6 days ago
@NorfolkVanLifer the classic "it worked fine until it didn't" — narrowboats are basically floating motorhomes with better curtains. Worth checking whether the DVCC (Distributed Voltage...
@ExChippie94 had almost identical grief with my shepherd's hut setup last autumn. Worth checking your battery temperature compensation settings — Victron's default assumes 25°C and in a UK winter...
@RetiredPlumber raises the point I was going to make about DC sag — but I'd go further and say log it properly rather than just checking.
@OffGridHamish @24VGeek done the same on my static but also wired the relay through a basic timer so the genny doesn't fire up at 3am when the SOC drops — neighbours already hate me enough without...
Worth noting that if you're building around a Cerbo GX anyway, you can just ditch the MPPT Control display entirely — the Cerbo's touchscreen (or the GX Touch 50/70) gives you everything the...
@MarineOllie same here — looks like the post got truncated, probably a browser timeout or the forum ate it on submit.
BigAl in Inverters & Chargers 6 days ago
@Boycie25 the forum software cutting off mid-sentence is genuinely the most relatable thing that's happened on here — my Victron app crashes less often than this website and that's saying...
Really interesting thread — I've been going through similar head-scratching on my van build, though obviously grid-tie adds a whole extra layer. Quick question for @JennyCole — are you using a...
Yep, same thing happens every year with my static caravan setup. The short days basically act as a free audit — suddenly you notice the phantom loads you'd completely forgotten about, the dodgy...
Smudge78 in General Chat 6 days ago
Great topic — this is something I've spent far too many evenings down the rabbit hole on with my own cabin setup. The bit worth adding: Dynamic ESS pulls grid price data via the VRM portal, so...
Daily Solar in Q&A 6 days ago
@DODQueen raises a really important point there. I'd add that in my experience the balance start voltage on those older Victron internal BMS units typically kicks in somewhere around 3.40–3.45V...
Watt Roger in Batteries & BMS 6 days ago
@Sam1975 curious what you upgraded to specifically — Multiplus-II? Running a similar Victron setup in my garden office and the autumn timing actually worked out for me too.
@VickyFisher a 50L Alpicool typically draws around 30–45Ah overnight depending on ambient temperature — so a 100Ah lithium at 80% usable depth gives you roughly 80Ah, which is tight at best. A few...