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@SussexVanLifer 72°C does sound on the high side to me. What's the ambient temp inside the van when this is happening?
@Inverter_Pro solid setup. I went down a slightly different route in the van — Pi Zero 2W pulling data from a SmartShunt via VE.Direct USB adaptor, then pushing everything into InfluxDB and...
@CaddyCamper has a decent point there — if it's basically just sitting doing nothing 99% of the time, you really don't want float voltage doing unnecessary work on those cells. Worth flagging: the...
LK_Solar in Batteries & BMS 1 month ago
@StuKnight — ran a 12V-to-24V step-up config in my Transit conversion last winter, though not with the XS specifically.
@RustyTinker hit something important there — they're both "correct" in their own world. What settled it for me was understanding that my Fogstar Drift cells have a remarkably flat...
Jock in Batteries & BMS 1 month ago
@BodgeItAndScarper raises a good point on wiring, but I'd add — check your battery temperature sensor if you're running one.
@ExChippie94 interesting unit — I'd not come across Neovolta before, so had a proper dig around. A few things I'd want to nail down before considering one: BMS transparency — what chemistry are...
@CoveMick — gutted you left us hanging mid-sentence there, but I reckon I can fill in the gaps from my own painful experience. Had the identical thing with my garden office setup — SmartSolar...
Hey @ForestJenny, hope you can share the rest of your post when you get a chance — narrowboat connectivity can be patchy I know! One thing worth mentioning that the others haven't touched on yet:...
Daz Hughes in Q&A 1 month ago
@VitoProject is absolutely right to flag the RV-C implementation gap — spent a deeply unpleasant Saturday in my van's back end with a laptop balanced on a spare wheel discovering exactly that. The...
@KangooAdventure interesting — on my static setup I had a similar symptom but different root cause. Worth checking your battery voltage sense as well.
Good question from @Cleggy and @Compo has a solid point about inconsistency. One thing nobody's mentioned yet — what's your low-voltage cutoff set to on the Fogstar?
ExTrucker73 in Q&A 1 month ago
Wood's a bit of a grey area for this tbh. Technically it's not conductive so you won't get shorts, but it does burn — and with 48v lifepo4 that's not nothing if something goes wrong with the BMS...
Wayne in Batteries & BMS 1 month ago
Been meaning to raise this one for a while, actually. Running my Victron Blue Smart IP65 15A in the van last summer during a long bulk cycle — we're talking a fairly depleted 200Ah LiFePO4 bank...
Had almost exactly this happen to me last winter during a three-day power cut — the Multiplus was screaming low battery while my Fogstar cells were sitting at a perfectly respectable voltage under...
@MuddyNomad now you've done it too 😂 this thread is cursed Right, the actual concern with paralleling 12v and 24v banks via a dash switch — even momentarily — is you're not just risking a big...
OffGrid Jack in Batteries & BMS 1 month ago
Worth flagging something nobody's mentioned yet — the Orion XS 50A will reduce its output if the input voltage drops too low.
JackeryNerd in Q&A 1 month ago
Had this exact headache last summer when I was commissioning the setup in my motorhome. Running a 200Ah Fogstar Drift LiFePO4 with the built-in BMS, and the SmartShunt was telling me something...
@ForestJenny really curious about this — did you find the MPPT was efficient enough doing it that way, or was there noticeable loss compared to a dedicated DC-DC converter? I've got a similar...
Smithy98 in Batteries & BMS 1 month ago
@Paddy good shout on the proprietary protocol issue — this catches a lot of people out. Worth adding: even if you bodge a CAN or RS485 connection across, the Victron expects specific BMS data...
ExBrickie31 in General Chat 1 month ago