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@LH_Marine nice one — ESPNow for the inter-board comms is a smart call on a boat, keeps it off the main network and latency is tiny. One thing worth flagging with the Multiplus II + custom BMS...
@PanelKate tail current is interesting — what value did you land on for your battery bank? I'm running a Fogstar 100Ah lithium in my static caravan off a similar Orion setup and I've never been...
Had this exact same gremlin with my garden office setup last year. Turned out my battery voltage sense wires had a dodgy crimp — Multiplus was reading voltage at the inverter terminals rather than...
Wired my van MPPT straight to the battery terminals after a frustrating afternoon reading contradictory threads elsewhere.
Had almost identical grief with my old Kipor 3kVA last winter — generator would chug along fine for twenty minutes then just die, sometimes with the lights flickering dramatically before it gave...
Been meaning to post about this for a while, actually. Running a Victron ESS setup on my static caravan plot — three Multiplus-II 48/5000s in a three-phase config, backed by a modest bank of...
Derek Dixon in Batteries & BMS 2 months ago
@Bomber78 nothing says "relaxing weekend on the water" like rewiring your entire bilge in 48V because Victron made it look easy on YouTube 🚤🔋
What @LesWood78 and @PeakVanLifer have covered on fusing and voltage drop is solid — the piece I'd add specifically for EV charging applications is inverter efficiency loss. Your 2,000W inverter...
Been down this rabbit hole with a similar setup a while back so might be able to help, though not with that exact Must battery. From what I recall, the Growatt SPF LVM-ES series is a bit fussy...
Lucky Skipper in Batteries & BMS 2 months ago
@BatteryGill three months of dust is practically a Victron rite of passage at this point. Running a similar Fogstar-banked setup in the shepherd's hut and the Buck-Boost invisibility on Venus OS...
Got a bit of a specific situation here and wondered if anyone had real-world experience rather than just spreadsheet maths. I'm setting up a small garden office with a 200Ah LiFePO4 (Fogstar Drift...
Dai Lewis in Q&A 2 months ago
Reply from JackieCrane: @WattLiz one thing worth looking at that nobody's touched on yet — have you set the "tail current" parameter in VEConfigure?
Been mulling this one over myself recently, so good timing on the thread. When I set up my tiny house system I had a similar situation — Multiplus II feeding directly to a Fogstar Drift battery,...
Moor Hermit in Batteries & BMS 2 months ago
@LochLinda that cell count is where it gets interesting from a BMS perspective — the Overkill 100A unit is solid for a single pack but at that capacity you're almost certainly looking at parallel...
@GrumpyBuilder is right on the core point, but worth clarifying why for anyone landing on this thread later. The Multiplus's assistant framework (things like ESS, generator start/stop logic,...
Cerbo_Geek in Batteries & BMS 2 months ago
Had this exact issue last summer with my 100/20. Drove me mad for weeks. Turned out my battery voltage sensing was the culprit — I had quite a long cable run between the MPPT and the battery bank,...
@ForestDweller that's something I've been trying to work out for my own build actually. From what I've gathered doing research before committing to my Fogstar 200Ah LiFePO4, most people seem to...
Running a similar headless setup here — Victron MultiPlus-II with Fogstar Drift cells and absolutely zero comms between the BMS and the Cerbo GX, because apparently I enjoy making life difficult...
Dales OffGrid in Batteries & BMS 2 months ago
Did the same dilemma on a stone bothy in Perthshire a few years back before I converted my van full-time.
@CharlieCampbell66 oh mate, I feel this in my soul. Had the exact same saga on the boat last winter — short pootle up the canal, alternator barely gets into its stride before you're tying up...
Kingy in Motorhome & Campervan 2 months ago