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Been having this exact issue with my Victron SmartSolar 100/30 for the past few weeks. Batteries hit absorption for maybe 20-30 minutes and then the controller just decides they're full and drops...
Been running a Victron Orion-Tr Smart 30A isolated for about six months now and I'm seeing the same thing.
Moor Seeker in DC-DC Chargers 1 month ago
@ThingamyBob yes, the Orion-Tr Smart will do this — input and output are just labelled for the typical use case but there's nothing stopping you reversing the roles electrically, provided your...
@WezWhite72 used these on my shepherd's hut build last year — cracking little testers. One thing worth noting: run your cells at 0.2C discharge if you want figures that actually match real-world...
@BrianBrown yes your post cut off at the worst possible moment, cheers for that. While we're waiting — had something similar on my garden office setup with a Victron SmartSolar.
Had exactly this after last winter with my US3000C stack — two units sitting at the bottom of their SOC range whilst the third cracked on ahead like it had somewhere to be.
48VWizard in Batteries & BMS 1 month ago
Done both, and the stone outbuilding will absolutely win if you can stomach the damp-proofing faff before you even think about insulation. My setup in the Cotswolds is a converted stone barn —...
This is almost certainly low-temperature protection kicking in. Lithium cells — whether LFP or otherwise — really don't like being discharged in sub-zero conditions, and most decent BMS units will...
@MarineGeoff already nabbed the Victron point so I won't rehash that... One thing nobody's mentioned — fusing and cable routing matters enormously in an emergency vehicle context.
On the boat I've got the Cerbo relay controlling my Orion-Tr Smart via the remote on/off pin — works a treat.
Kev Scott in DC-DC Chargers 1 month ago
Ha, cursed thread indeed @XO_Sparks 😄 Assuming @CamperSam is asking about Victron's Continue with Missing Phase setting on three-phase Multi/Quattro systems — yeah, it's genuinely...
Been wrestling with something similar on my shepherd's hut setup and thought it was worth throwing open for discussion here. I've got a Victron SmartSolar MPPT 100/30 talking to a Cerbo GX via...
@Nessa73 had similar grief with my Cerbo on a 24v build. Turned out my issue was the battery monitor hadn't been set as the primary source — Cerbo was ignoring the Victron BMV and just estimating...
Lucky Skipper in Q&A 1 month ago
@SmartSolar_Master bit of a tangent from the SolarEdge discussion, but your narrowboat mention caught my eye — I spent three years wrestling with AC coupling on my own boat before switching to a...
@AnneOliver honestly don't put it off too long — the learning curve looks steeper than it actually is. If you've already got the Multiplus II, you're halfway there.
@MountainHermit is absolutely right and it's critical people understand this before they fry something expensive. Toyota's hybrid system doesn't have a conventional alternator at all — it uses the...
FormerTeacher in DC-DC Chargers 1 month ago
Reply by LH_Marine @BordersOffGrid Almost certainly a firmware issue combined with the nRF52 Bluetooth module struggling at low temps — seen it repeatedly on both my narrowboat and the shepherd's...
@HeathGazer worth checking whether the trips are happening at a consistent state of charge rather than a consistent time of night.
Jim Williams in Batteries & BMS 1 month ago
@BerlingoConvert had almost exactly this on my narrowboat last summer — what sorted it for me was doing a proper full charge cycle all the way to absorption and float, then letting the BMV-712...
Van Julie in Batteries & BMS 1 month ago
@WezWhite72 what discharge current were you running the tests at? I've got a batch of used cells I'm evaluating for my van build and I'm wondering whether testing at 0.2C gives meaningfully...
Van Kev in Batteries & BMS 1 month ago