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Ha, @BevJackson64 you've got us all on tenterhooks here! 😄 As the others have said, do finish the post off — but while we're waiting, I'll add that with parallel Fogstar Drifts I'd be looking...
Dodgy Spanner in Batteries & BMS 4 months ago
@LH_Marine hits on something I learned the hard way fitting out my boat — continuous draw is the silent killer.
So this one's been rattling around in my head ever since I started speccing out the next phase of my van-to-tiny-house transition... I'm looking at AC-coupling a Victron MultiPlus-II with an SMA...
@CharlieStevens85 had this exact headache with my Multiplus II and a bank of Fogstar Drift cells. Once @PennineNomad's tail current fix is sorted, check your absorption voltage too — if it's set...
Been scratching my head over something similar for my shepherd's hut build and wondered if anyone's tackled this. I'm running a 12V 100Ah Fogstar Drift LiFePO4 as my main bank, but I need to...
Ewan Chapman in Batteries & BMS 4 months ago
Bit of a rabbit hole this one, and I've been down a similar path with my motorhome setup so thought I'd chip in. Running a pair of Multiplus II 12/3000s myself, originally with four 12V batteries...
What's the actual voltage range you're seeing from your panel at the input side? That's the bit I keep getting stuck on with my shepherd's hut setup — panels can spike well above their rated Voc...
Blimey, it's like someone raided a Victron warehouse and decided their narrowboat refit could fund a small holiday — half this stuff is sitting in my engine room doing absolutely nothing too, so I...
Wonky Hermit in Batteries & BMS 4 months ago
@HeathGazer this is almost certainly the ESS assistant version mismatch that @BatteryAlan alluded to — but specifically, post-update Venus OS sometimes resets the Minimum SOC and Grid setpoint...
LH_Marine in Batteries & BMS 4 months ago
Just to add a practical note to what @ExSquaddie49 and @LochLover have mentioned — with different roof aspects you'll likely find your MPPTs are rarely all peaking simultaneously anyway, which...
@HazelDawn one thing I'd flag that often gets overlooked on small arrays like yours — make sure your SolarSense 750 settings account for the actual installed tilt angle and azimuth deviation from...
Paddy in Q&A 4 months ago
@ShortCircuit 200Ah for a garden office through a British winter was always going to be marginal at best.
Vito Project in Garden Offices 4 months ago
@RetiredNurse58 Worth doing a proper load calculation before committing to a size. Roughly — add up your daily watt-hours (lights, fridge, phone charging etc.), divide by your battery voltage, and...
Bev Jackson in Q&A 4 months ago
Got a Pi Zero 2 W running Venus OS in my shepherd's hut — handles VE.Direct from my Victron SmartSolar no bother and costs next to nothing compared to a Cerbo. That said, the real game-changer for...
@RustySkipper narrowboats are a great use case for lithium — the weight saving alone is worth considering given how much lead you'd otherwise be lugging around in the bilge.
Good shout from @MuddyFisher on the DC input side of things. The bit I'd flag is the input voltage range on that Orion — it's rated 18–35V continuous on the 24V input side.
@BevJackson64 your post cut off like the BMS did 🔋
Vicky Ward in Batteries & BMS 4 months ago
@LindaClark90 classic SmartShunt calibration gremlin! The SmartShunt is doing coulomb counting — it's meticulously tracking every electron in and out, but it drifts unless it gets a proper...
Daily Solar in Batteries & BMS 4 months ago
Been down the Pi route myself and honestly still rate it for tinkering — but if you want something dead simple without the faff, look at a Victron SmartShunt paired with the VictronConnect app...
Seen this catch people out more than once. The bit that's often overlooked is the AC input current limit interacting with the ESS assistant's feed-in settings. If your grid meter is reading net...
Compo in Batteries & BMS 4 months ago