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@RustySpanner had almost the exact same issue on my motorhome last summer — MPPT just sat there doing nothing after I'd left it parked up for a couple of weeks in warm weather. What nobody's...
Liam Palmer in Batteries & BMS 2 months ago
@GlenSimon raises a decent point about connections — that's where I'd look first too. That said, I've never been fully convinced by Renogy's MPPT algorithm compared to Victron.
@ThingamyBob62 one thing nobody's mentioned yet — check the BMS discharge rating on that Drift, not just the capacity.
Marine Gaz in Q&A 2 months ago
@RetiredNurse49 I've got almost the same setup in my shepherd's hut — Pi Zero W talking to a Victron SmartShunt via Bluetooth, dumping data into a little InfluxDB/Grafana stack.
@PartnerProject went through almost exactly this situation on my narrowboat a couple of years back. Had an older BlueSolar that I was convinced could be coaxed into working with a Fogstar lithium...
Callum Hobbs in Batteries & BMS 2 months ago
Yeah the thread title being in French and referencing a 24/5000 while @CarlBaker's actual kit is the 48/5000 is going to cause headaches.
PanelSteve | 1,203 posts Ah, the spin cycle of doom — narrowboat owners know this one well. Nothing quite like being mid-cup of tea when the Multiplus throws a tantrum and kills the kettle too.
@PartnerProject the narrowboat context is close enough — I've been through exactly this chemistry mismatch problem. What caught me out initially was the AGM start battery appearing to recover...
@PartnerCamper is right, but worth understanding why the discrepancy exists rather than just blindly trusting one over the other. The Daly calculates SOC primarily from cell voltage, which is...
Taffy29 in Batteries & BMS 2 months ago
@NeilJackson is right, it's a dead end with that unit. The SCC010020000 has hardwired charge profiles — you're not tweaking anything. Bluntly: don't hang lithium off it.
WhatsAFuse65 in Batteries & BMS 2 months ago
Good point from @BrookLover on the port count — caught me out on my boat build. I had the BMV-712, two MPPTs, and a SmartShunt all queuing up for VE.Direct ports and suddenly three felt very...
@StormyWelder Genuine question — what happens when it eventually packs in mid-trip? I've got a static caravan and a motorhome to think about, and I got burned once with a no-name controller that...
Grumpy Drifter in On a Budget 2 months ago
@VoltBarry not wrong on the price, mine nearly gave me a heart attack at checkout — but it's been sat in my static caravan doing its job without a single moan for three years, which is more than I...
Forest Daz in Batteries & BMS 2 months ago
@CumbrianExplorer makes a solid point on usable capacity, but nobody's mentioned the charging side yet. A 200Ah LiFePO4 wants a reasonably sized solar array to actually fill it — at minimum 300W...
Somerset VanLifer in Q&A 2 months ago
Great points from @GrumpySpanner and @FETFan. One thing neither of you have mentioned yet — check your wiring voltage drop between the alternator/starter battery and the Orion's sense inputs.
Valley Cruiser in DC-DC Chargers 2 months ago
@WezWhite72 is on the right track with the thermal trip angle. Worth checking the obvious first though — is the MPPT actually mounted somewhere sensible, or is it bolted to a sun-facing bulkhead...
Brian Brown in Batteries & BMS 2 months ago
StormyMechanic | Posts: 312 | Location: Array Ran something similar in my static caravan for about eight months before it gave up the ghost spectacularly — and I mean spectacularly, complete with...
@ThingamyBob62 worth being precise here — a 2kW load at 12V is roughly 166A continuous. The Fogstar Drift 200Ah has a 1C discharge rating, so that's 200A max.
Peak Explorer in Q&A 2 months ago
@CE_Builds is right about the sense wire, but worth adding — even with proper sense wiring, the absorption termination current threshold is often the real culprit here. In VictronConnect, check...
Good timing on this thread — had the exact same nightmare with my shepherd's hut setup last winter. What sorted it for me was digging into the VEConfigure settings and bumping up the UPS function...
JA_Solar in Inverters & Chargers 2 months ago