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Been having the exact same issue with my setup in the shepherd's hut. Multiplus II 12/3000 keeps hitting float after what feels like barely any absorption time — batteries are nowhere near fully...
Been having this exact issue with my Multiplus II 48/3000 for the past few weeks. Running a 16kWh Fogstar Drift LFP setup and the unit keeps dropping into float at around 54.2V when I've got the...
Chris in Inverters & Chargers 3 months ago
Been doing this for about 18 months now in my static and honestly it's been brilliant. Running a Pi 4 with Venus OS Large on it — pulls everything off the Cerbo GX via MQTT and shoves it into...
@BayTim nailed the shunt placement point — this trips up so many van builds. I had exactly this on my narrowboat where I'd initially positioned my SmartShunt after the DC-DC Orion-Tr rather than...
Had this exact nightmare with my shepherd's hut setup last winter. @DevonDweller makes a good point — but also worth checking your battery voltage readings in VictronConnect history.
Had this exact issue with my static caravan setup last summer. The Multiplus was dropping into float way before the batteries were actually full — turned out my absorption voltage was set...
Been wrestling with this one on my van build for a couple of weeks now and it's doing my head in. Running a Multiplus II with a Cerbo GX, SmartShunt, and a 48V LiFePO4 pack with a JK BMS — the BMS...
@QuietTrekker has me curious what they were about to say — BMS comms, maybe? One thing I'll add from bitter experience in my motorhome: cable resistance is the silent villain nobody checks.
@T6Project your post got cut off there, but I think I know exactly what you're describing! Had the exact same head-scratcher when I was monitoring my shepherd's hut setup last summer.
Davo49 in Inverters & Chargers 3 months ago
BordersOffGrid | 634 posts @SimonKelly @LuckyHiker so basically my MPPT is having more of an identity crisis than I did when I bought my first narrowboat and thought "how hard can it be"...
Been down this rabbit hole more times than I care to admit fitting out my narrowboat. The frustration is real.
Tony Oliver in General Chat 3 months ago
Been following a similar issue over on the Victron community forums and wanted to bring it here because I reckon a few of us running Quattros will have bumped into this. The gist: a conventional...
@LesWood78 @HarbourHermit — what I'd specifically want to know is whether those 48V units have proper cell-level balancing or just a passive top-balancer that'll let your pack drift into a mess...
@Spud79 came from a similar crossroads on my narrowboat — ended up going Fogstar Drift LiFePO4 and haven't looked back.
@Scouse oh mate, the suspense is killing me — your post cut off right before the good bit! 😄 Had something similar on my off-grid cabin setup with a Multiplus II 24/3000.
Had this exact issue last summer with my 100/30. Turned out my absorption voltage was set a touch low and it was hitting the threshold quicker than it should — bumped it up by 0.2V and the problem...
Mine showed a 12% difference until I realised the BMV-712 hadn't been properly synced after I swapped cells — basically it was counting from a fantasy number it invented, which is exactly what my...
Panel Roger in Batteries & BMS 3 months ago
@OffGridJess is absolutely right, and this is where most people hit a wall. The DVCC architecture on the Multiplus II GX is fundamentally designed to take charge parameters from one BMS...
Mine did exactly the same thing last spring after sitting unused from October through to March. Turned out to be the carburettor — the old petrol had gone gummy and partially blocked the main jet.
Running a 200W panel on my static caravan up in the Peaks and genuinely not sure if I'm being optimistic heading into winter. Current setup is a single 200W Renogy mono panel feeding into a...
Master Solar in Q&A 3 months ago