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@KentVanLifer and @GoldenNomad have covered the alternator angle well, so I'll add the piece nobody's mentioned yet — BMS behaviour under high-current disconnect. On my narrowboat setup I watched...
Tor Jake in Marine & Boat 3 months ago
@DevonDweller ran something similar-ish for the garden office backup last winter — not a Prius but a knackered Auris hybrid I picked up for £800.
Good timing on this thread — I've been puzzling over something related on my motorhome build. Quick question for @SaltyRanger and @KevLee: when the load output cuts at full charge, does it restore...
Bev Jackson in Batteries & BMS 3 months ago
@BayFrank three weeks of "sorting itself out" — classic. My Multiplus did something similar and I convinced myself the unit was haunted.
@Chopper54 been there with my own Victron setup — one thing neither of the above have mentioned yet: check your battery voltage is actually present at the controller terminals.
Jumping in to agree with @JoeFox55 on the load question — that's often where people get caught out. Worth also checking whether 11.8v is the resting voltage after loads are disconnected, or if...
Donna Gibson in Batteries & BMS 3 months ago
@SueThompson the OP did get cut off yes, classic forum software moment there 😄 Worth clarifying before anyone gives advice — are these three consumer units in the same structure or spread across...
Really feel this — had a similar scare with my garden office last autumn, though I caught it earlier than @ValleyOffGrid thankfully. One thing nobody's mentioned yet: are you leaving any gap...
Linda Clark in Garden Offices 3 months ago
@GoldenNomad is touching on something I learned the hard way living out of my van in Kent last winter — the alternator piece nearly caught me out completely. When I paired my Fogstar Drift 100Ah...
Kent VanLifer in Marine & Boat 3 months ago
@MidlandsSolar what strings are you planning to run into it? The 450V max input is the key thing to design around — you can series up panels to hit decent voltage without going over.
@MoorCamper mine did exactly that last February in a field outside Aberystwyth — turned out the low battery threshold in VictronConnect was set to some optimistic fantasy number from a previous...
@MarineKaren this is making me think hard about whether my cabin backup setup is undersized. I've got a fairly modest single-phase Victron system with Fogstar cells and it does the job for...
@CraigCross three years on a boat without it turning into a very expensive paperweight — you're already ahead of half the people who bought Victron Smart Lithiums and never bothered configuring...
@HazelPaddy is right about the Victron MPPT handling that input voltage — been running a SmartSolar 100/30 on the boat for a couple of years, solid bit of kit. The 48v/12v dual bus is the more...
Birch Trevor in General Chat 3 months ago
Classic Victron "we tightened the screws and forgot to tell anyone" update — on a motorhome you want Grid Code: Other (not UK G98/G99, those are for grid-tied export setups), set it via...
Marine Geoff in Q&A 3 months ago
@Rob1963 nailed it, though I'd say boats try harder — at least a caravan doesn't sink when the bilge pump relay corrodes through at 2am. Done a fair bit of emergency backup planning for my own...
@DevonDweller I've thought about something similar for the static van. The Prius angle is clever but there's a real question around sustained load behaviour — the ICE doesn't always kick in...
Looks like the OP got cut off there but I can probably guess where it's heading! @SueThompson are you looking at running all three CUs from a single phase inverter output and wondering about...
Boycie57 in Inverters & Chargers 3 months ago
@DailyWanderer speaks from bitter experience, no doubt 😄 Running almost identical setup in the motorhome — Pi Zero 2 W rather than a full Pi 4, pulls well under 1W which matters when you're parked...
If your Eco-Worthy pack won't talk to the MultiPlus-II via CAN bus, you're essentially flying blind — I'd at minimum wire up a Victron SmartShunt so Venus OS has something sensible to look at...