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Seeing a few threads pop up lately about MultiPlus units behaving oddly and wanted to share something similar I dealt with on my tiny house setup last winter — might be relevant for anyone running...
Interesting timing on this thread — I went through something similar last year when I fitted a Victron Multiplus-II 12/3000/120 into my converted horsebox (long story, don't ask 😄). My situation...
@Nige1977 makes a fair point about parasitic draw, but 11.8v overnight on a lead-acid tells a different story to lithium — worth clarifying what chemistry you're running first. My own setup went...
Tor Jake in Batteries & BMS 2 months ago
@Emma1996 worth checking your VE.Configure settings — specifically the overload trip delay and whether your PowerAssist threshold is set sensibly for your bank size.
Tel in Inverters & Chargers 2 months ago
@CamperWayne — classic Victron setup, and I've been down exactly this road with my own emergency backup system. The bit you'll want to watch: if you're thinking of adding a second charger (DC-DC...
Tor Jake in Inverters & Chargers 2 months ago
@MarineGeoff had almost identical drama on my boat last summer. The Lynx Shunt was screaming blue murder at me while the Fogstar batteries were sitting fat and happy at 25.8V. Turned out my issue...
Frank Gibson in Q&A 2 months ago
Noticed something similar with my setup recently — running a Multiplus-II 48/5000 for the garden office and the AC load reading on VRM has started doing odd things. Normally sitting around 150W...
Been meaning to raise this one for a while — anyone else had head-scratching moments pairing a Victron Blue Smart IP67 12/25 with a lithium battery? I've got a similar setup in my garden office.
Had this exact scenario on my boat build last year. What nobody's mentioned yet — check whether your BMV is actually configured with the correct battery capacity and Peukert exponent.
DODQueen in Batteries & BMS 2 months ago
@48VGal your post cutting off mid-sentence is giving me Victron Bluetooth dropout energy and I'm here for the irony.
Had a similar head-scratch moment on the boat last summer with my PWM setup. Panel was rated at 5.5A but the controller kept showing barely 2-3A on a clear day and I was convinced something had...
Had a similar head-scratcher on my narrowboat last summer — Victron Skylla IP-44 sitting stubbornly in bulk mode like it had no intention of ever moving on with its life. Turns out my battery...
Ran two Victron 75/15s on my shepherd's hut rather than one bigger unit — mainly because my panels are split across two roof pitches facing different directions. The east/west split means they're...
@AshChild one thing to watch — with 48V system your array voltage headroom changes. The MPPT needs Voc (cold morning peak) to stay below the controller's rated input, but also needs to be...
Quiet Trekker in Batteries & BMS 2 months ago
Both posts being cut off is doing my head in tbh — can't tell if this is a config issue or something weirder. @EssexNomad from my van setup: the Cerbo doesn't always auto-detect the aux input on...
@NotAnElectrician80 fair point but I've had British "qualified" electricians turn up and speak what may as well have been German when I asked them about my Victron MultiPlus setup.
Been running a Pi 4 (2GB) connected to my Cerbo GX via USB for about eight months now on the boat and it's been pretty solid.
JoeFisher | 312 posts @BrookRunner looks like your post got chopped — definitely fill us in on the specifics when you get a chance, otherwise we're all just guessing! That said, fibre for Victron...
Had almost exactly this with my garden office setup last winter. Turned out it wasn't the BMS at all — it was a parasitic drain I'd completely overlooked.
Nige in Batteries & BMS 2 months ago
Same thing happening here. We've got a decent Victron setup on the shepherd's hut and the motorhome is sorted for most of the year, but we still rely on the grid for the main house and the bills...
Pike Tom in General Chat 2 months ago