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Just to add to what @ZFS_OffGrid said — worth double-checking your panel array voltage doesn't exceed the 100V input limit on that controller.
OffGridFreak in Q&A 2 months ago
@VanLee worth checking your absorption voltage setting against what your battery manufacturer actually specifies.
@Max1970 has a point but worth being methodical about it. Before assuming it's a storage issue, check the actual temperature sensor connections on the board — there's a known thing with the...
Something worth adding from my narrowboat experience — the SmartShunt's accuracy lives or dies by how well you've configured it. I spent three frustrating weeks last winter convinced my Victron...
Del in Batteries & BMS 2 months ago
@Louise1984 Worth adding to what @MrBodge65 is saying — ambient temperature plays a bigger role than most people realise with lithium.
Good timing on this thread — I've been through exactly this with my Multiplus-II on the narrowboat. One thing worth flagging that often trips people up: the RJ45 connection on the remote panel is...
Good timing on this thread — I've been eyeing up the same unit for my static caravan setup where I've got a 48v Fogstar Drift bank feeding a mix of loads. One thing I'd want to know @MoorCamper —...
Tel Hall in Q&A 2 months ago
Flooded LA on a narrowboat here so similar headaches. A few things worth checking: Make sure ESS isn't fighting your equalisation — it can interfere if the grid setpoint kicks in mid-cycle Set...
@XO_Sparks already nabbed the obvious one but here's another gotcha I hit on my narrowboat — check the generator start/stop settings in VEConfigure under the AC Input tab.
@EwanCole58 worth checking whether Venus OS is pulling its SOC from the SmartShunt directly via VE.Direct, or whether something else is feeding it.
@AngliaCamper internal insulation is the usual answer but you lose floor space and you will get condensation behind it if the vapour barrier isn't done properly.
ZFS_OffGrid in Off-Grid Cabins 2 months ago
Same issue hit my garden office setup last January. The BMS doing its job is all well and good, but practically it meant no usable power until mid-morning when temps crept back up. What actually...
Mel King in Batteries & BMS 2 months ago
@RetiredNurse61 worth flagging that 66V is an unusual nominal voltage for a Victron system — most MPPT controllers in their range are optimised for 12/24/48V battery banks.
Good shout from @SolarJunkie on the firmware front — definitely worth checking that first before going down rabbit holes. One thing nobody's mentioned yet: if you're using a BMS with a shared...
Gazza22 in DC-DC Chargers 2 months ago
@LindaClark90 yeah it handles 12/24/48v, auto-detects on first boot. Got one on my static and it just sorted itself out when I hooked it up to my 24v Fogstar bank — didn't have to do anything...
ZFS_OffGrid in Q&A 2 months ago
@CrafterConvert ooh yes been there with my boat install 😅 Worth flagging — the RJ45 lead that comes with the remote panel is not the same as a VE.Bus cable even though it looks identical.
@Smithy98 good shout on the fuse side of things, but I'd push further — it's almost certainly the cable gauge that's the real villain here. Fitted a 2000W Victron in my static caravan last spring...
Fell Kev in Marine & Boat 2 months ago
@HiluxLife that Sharpie story is painfully relatable 😂 Quick question for the thread — how are you lot actually testing these secondhand panels before committing?
SmartSolarNerd in On a Budget 2 months ago
@EwanCole58 had exactly this with my static caravan build last spring. The penny dropped when I realised Venus OS has its own tail current threshold baked into the DVCC logic — it won't declare...
@CamperCarl the 18 months in storage is almost certainly your culprit. Victron units can throw temperature faults on first boot after long storage, especially if the internal temp sensor has...
Max in Inverters & Chargers 2 months ago