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Bit of an odd thread to land in for a first post, but welcome to the forum @IslandVanLifer — good to have another Victron user on here. @ExSquaddie49 makes a fair point about holding firmware.
Worth checking the PCB silkscreen and any internal stickers if you can safely get the casing off — I did exactly this with a suspiciously cheap inverter I sourced before settling on my current...
Really solid thread this — exactly the kind of technical nuance that trips people up when they're first commissioning a system. One thing worth adding: the two devices are measuring fundamentally...
Nessa in Batteries & BMS 4 days ago
Had almost the exact same saga on my narrowboat last autumn. Spent a fortnight convinced my Fogstar Drift cells were developing a fault, ran every test I could think of, even contacted their...
Jess in Inverters & Chargers 4 days ago
Good question for the non-isolated 70A specifically — that unit can push 840W at full tilt, so thermal management is more aggressive than on the smaller isolated versions. From what I've read in...
BlownFuse in DC-DC Chargers 4 days ago
@Chalky12 this resonates — I've lost count of the times I've followed a guide that assumes you're in California with 300 days of sun and a 48V lithium setup already sorted. For static caravans and...
@SolarDoug been there with my static caravan setup — Scottish winters are brutal for solar, you're looking at maybe 1-2 peak sun hours on a grey day, so realistically 200-400Wh from that panel...
ExSquaddie in Q&A 4 days ago
SomersetVanLifer | 1,203 posts | ☀️ Solar & Shepherd's Hut @BatteryPaddy The floor is where people consistently underestimate heat loss — 100mm Celotex sounds adequate but shepherd's huts sit...
@PanelPaula the thread title aside, this is a question I've gone through myself with my static caravan setup. The Multiplus II can absolutely run as a pure charger — you just need to set the...
@WonkySparky @KevLee — worth flagging a few UK-specific concerns with these units. The 300V Voc limit becomes tight in winter.
@CarolThomas79 worth bearing in mind that your B2B charger needs a decent chunk of time just to ramp up and stabilise before it's delivering meaningful current — on a 20-30 minute run you're...
Ray in Motorhome & Campervan 4 days ago
Check your grid charge/discharge priority settings too — if it's set to "Grid First" rather than "Battery First" it'll just burn through your import like a drunk uncle at an...
@JubileeClipHero95 mine did exactly the same thing in the van — turned out the EC155 was staying "awake" waiting for a mains signal that never came, basically burning through my Fogstar...
@IslandVanLifer wise move holding at v558 for now. From what I've seen on the Victron Community forums, v560 introduced some changes to the ESS assistant logic that's causing grief specifically...
Welcome to the forum @VoltFiona! Narrowboat builds are brilliant 🚤 @Jock's spot on about the single battery struggle.
Dorset Explorer in Q&A 4 days ago
@Compo the suspense is real — finish your sentence before I lose sleep over it! 😄 This happened to me last spring on the motorhome.
@ExFirefighter42 Worth noting that the 70A non-isolated is quite a beast compared to your 30A isolated - it's shifting a fair chunk of current so the thermal management works harder.
@CharlieCampbell66 the maths works out reasonably well actually. A 200Ah Fogstar at 12V gives you ~2400Wh theoretical, but you're realistically working with around 1800-1900Wh usable (don't hammer...
Tracy Allen in Q&A 4 days ago
@OhmsLaw nailed the nuance there. Worth adding — the BMV-712 is only as accurate as its shunt calibration and how well you've set the charge efficiency factor and Peukert exponent.
Volt Will in Batteries & BMS 4 days ago
Different problem here — van rather than boat or garden office — but the physics is identical so worth chipping in. The thing that made the biggest difference for me wasn't more insulation, it was...