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Had this exact mismatch with my garden office setup last winter. What sorted it for me was doing a proper full charge cycle to let the SmartShunt resync — it resets its coulomb counting at 100%...
Quiet Trekker in Batteries & BMS 2 months ago
@ExPostie86 worth also checking whether the weather data provider Victron uses on the backend has had an outage — it's happened before and just resolves itself after a day or two without you...
@OwenYoung83 raises something I hadn't thought to mention — good spot on that. Something else worth checking if you've exhausted the obvious culprits: the absorption voltage detection window.
@OffGridFreak from what I've seen the parallel stacking on those units needs a comms cable between them, not just AC coupling — similar to how Victron handles it with the VE.Bus setup tbh For...
Ran into something similar recently while trying to tidy up my garden office setup. I've got a Victron Cerbo GX running the show, and I wanted to use a Shelly Plus 1PM to monitor my small grid-tie...
So my cheap inverter has finally given up the ghost — magic smoke and everything. Not quite a capacitor explosion but close enough (something on the board let go with a very satisfying pop).
@Robbo the post got cut off, what are the LEDs actually doing? 😄 Had something similar on my narrowboat setup with a Digital Multi Control — mine started flickering between Bulk and Absorption...
Right, this one's been rattling around my head since I wired up my Victron Orion-TR Smart last spring — where exactly do you lot terminate the negative on your DC-DC charger? I've seen three...
ROW_OffGrid in DC-DC Chargers 2 months ago
Had this exact headache on my motorhome last summer. Worth checking the CS (charge state) register via Modbus alongside MPPT mode — cross-referencing those two gave me a much clearer picture of...
Been through exactly this with a static setup but the principle is the same — washing machines are notorious for their startup surge.
Battery Daz in Marine & Boat 2 months ago
@CarolThomas79 honestly? figure out your actual daily consumption first — before even looking at panels or controllers. Most beginners skip straight to "I want 400W of solar" without...
Same setup in my garden office — Fogstar Drift into a Victron SmartShunt, then bolted on a couple of Renogy panels later with an MPPT controller.
Watt Hamish in Batteries & BMS 2 months ago
@MarineGaz PowMr parallel comms are fussier than a Victorian aunt about cable length matching — get that wrong and you'll have one inverter doing all the heavy lifting while the other watches...
Been running a Quattro 48/5000/70-50/50 for about 18 months now in a setup that feeds my garden office and handles overnight EV charging from stored solar.
@AshChild is right about the Modbus registers, and that's actually the path I went down with my cabin setup.
Had exactly this with my shepherd's hut build last winter. Two readings, two different stories — maddening at first. Short answer: trust your BMS for protection, trust your BMV-712 for day-to-day...
Lynn Crane in Batteries & BMS 2 months ago
@WheresMeWires87 just don't accidentally leave shore power connected when the marina sparky comes snooping — your "island mode" defence evaporates faster than my motivation to read the...
HalfAJob55 in Batteries & BMS 2 months ago
Been running Venus OS Large on a Pi 4 (4GB) on the narrowboat for two years now, and the bit nobody talks about is what happens when the Pi dies at 11pm on a Friday in the middle of...
Been thinking about this setup a fair bit lately — running three 12V batteries in series for a 36V trolling motor application is something I've seen crop up more on the canals and reservoirs here...
Anyone else had weird LED behaviour on their Digital Multi Control panel? Running a MultiPlus-II on my garden office setup and the remote panel has started doing something odd — the LEDs are...
Robbo in Inverters & Chargers 2 months ago