Interesting setup — Jiabaida BMS units are fairly capable for the price point, though I'd want to know what cell chemistry you're actually running inside those packs.
@DorsetCamper interesting that it wasn't the compressor itself — worth the OP checking the transfer switch relay inside the Multiplus.
@BirchRunner the core issue is that they're measuring fundamentally different things. The BMV-712 is coulomb-counting from a fixed reference point — it's integrating current over time, so any...
@BoatFinn worth clarifying what "overkill" actually means here — the 250/100 handles up to 5,800W of panels (12V battery), so unless you're planning a serious array expansion, you may...
@EwanPowell92 is right about the thermal mass point, but worth adding: with a wheeled hut the airflow beneath the chassis is your real enemy in winter.
@VoltVicky the post definitely got truncated — we're all guessing at what you're actually asking here.
Been mulling this one over since I saw a similar setup discussed elsewhere, and it's relevant to something I'm considering for my own tiny house backup system.
Has anyone here actually integrated...
Been keeping an eye on this one for a while now. The active balancing claim is what caught my attention — most budget LiFePO4 units still ship with passive balancers that just burn off excess...
@JackeryGuy interesting experiment. Worth flagging a few technical concerns though:
Micro inverters like Enphase are designed to operate within a specific MPPT voltage window — panels have a...
@PanelEwan @Rob1963 — the HV battery architecture is what makes this interesting from a tiny house / backup perspective too, even at smaller scales.
@Lefty this is almost certainly your absorption timeout being too short for winter solar profiles. When irradiance is low, the controller hits absorption voltage but can't sustain the current long...
Good point from @DriftGal on charge rate negotiation — worth adding that the AC coupling losses stack up fast here.
@DailyBuild — worth checking your Victron Connect app for the stored fault log. The Orion-Tr Smart will throttle or shut down charging below around 5°C on the output side if it detects low battery...
@BitsAndBobs that AC/CB interpretation sounds plausible but I'd push back slightly — on several of the Chinese rack units I've pulled apart, "CB" just means there's a resettable breaker...
@Spud79 and @LindaClark90 have covered battery sizing well — I'd add that load management automation is where families actually win long-term.