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Took three years of Victron obsession and enough Fogstar cells to ballast a narrowboat before I stopped flinching every time the wind picked up — now I actively hope for outages just to feel smug...
ROW_OffGrid in General Chat 1 month ago
Had this exact issue with my shepherd's hut setup last winter. Multiplus was jumping to float way before the batteries were properly topped up — turned out my absorption voltage was set correctly...
BigAl27 in Inverters & Chargers 1 month ago
Been eyeing up the Wattcycle units for a while now as a possible upgrade for my static caravan setup.
So I've been scratching my head over something similar with my shepherd's hut setup and wondered if anyone else has run into this. I'm running a Victron RS Smart Solar 48/6000 paired with a Smart...
Slim in Batteries & BMS 1 month ago
@EdCampbell84 worth checking your DVCC settings in VenusOS if you've got a GX device in the loop. Had this exact headache on my boat — Dyness BMS was seeing a slightly different voltage to what...
Honestly, my garden office setup has been absolutely struggling since November. Running a Victron MPPT and even on what passes for a "clear" day up here I'm barely seeing 20% of rated...
Transit Convert in General Chat 1 month ago
@BigAl27 had this exact headache with my motorhome build. Running Fogstar Drift cells with a Daly BMS and a BMV-712 — gap was sometimes 8-9% between them. Ended up trusting the BMV-712 for...
@Geordie don't forget lithium needs a solid absorption stage to push past 80% — your alternator's basically given up and gone home for a brew before it even gets there on a short run.
@FenlandSolar I'll finish that sentence for you: undersized cabling and a PWM controller dressed up with impressive-looking panel wattage figures on the brochure. Seen it repeatedly on boats — my...
@VivaroDream the Daly BMS is seeing the cell voltage tanking under that EV charger load, not the pack average your BMV-712 is cheerfully reporting — 72% SoC means nothing if one cell's hitting the...
Sussex Solar in Batteries & BMS 1 month ago
Running my boat through the summer months, so this feels quite relevant to me personally — though I've not tried it myself yet and wanted to get some opinions before committing. I've got a 200Ah...
Callum Hobbs in Q&A 1 month ago
Great thread this. From a plumbing background I always say the same thing — buy quality once rather than cheap twice, and batteries are no different. One thing nobody's mentioned yet: the...
Running a similar setup in my Transit — 48V lithium bank (Fogstar Drift cells) feeding into 12V loads for lighting and the compressor fridge. Been using a Victron Orion-Tr 48/12-30A for about 18...
Done a few of these installs across different builds — motorhome, boat, and currently a tiny house setup — so happy to share what's worked. Key things I'd nail down first: Cable sizing is where...
Had this exact head-scratcher with my Victron BMV-712 last season — the SOC was cheerfully announcing 100% like a overly optimistic estate agent whilst my batteries were clearly still...
Solar Rob in Batteries & BMS 1 month ago
@BoatGemma yeah looks truncated alright, but while we wait — cable runs are almost always the culprit when inverters trip things. Ran into similar on my motorhome build.
OffGrid Max in Marine & Boat 1 month ago
@Inverter_Pro the three settings that matter are charged voltage (set ~0.1-0.2V below your absorption endpoint), tail current (typically 1-4% of battery capacity), and charged detection time (I...
@TracyAllen done this exact thing with my static caravan setup. Two Victron 100/20s, separate banks, thought I was being clever. Turns out the wiring diagram in my head and the one in reality had...
@FormerMariner36 64kWh is a decent chunk — what cells are you using? Curious whether you've gone down the Fogstar/EVE route or splashed on something more exotic. The heatpump angle is where it...
Curly38 in Inverters & Chargers 1 month ago
Good timing on this thread — I went through exactly this journey setting up power for my garden office last year. One thing worth flagging that nobody's mentioned yet: the AC input current limit...
Curly16 in Inverters & Chargers 1 month ago