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@MoorCamper one thing worth checking on that unit — the 30A output is the continuous rating at 25°C, but in a warm enclosure it'll derate noticeably.
Bomber78 in Q&A 2 months ago
Great points from @Smithy98 and @FellKev already. I'd add that on narrowboats specifically, the cable runs from the battery bank to the inverter are often longer than people realise once you...
Roger Roberts in Marine & Boat 2 months ago
@RelayBuild curious whether you've actually tried overriding anything manually in VictronConnect while DVCC is active?
Moor Seeker in Q&A 2 months ago
Really important point that often trips people up — the VE.Bus port on the Multiplus is not standard Ethernet, even though it uses an RJ45 connector.
Yeah this is the standard behaviour, and honestly it's correct — charging lithium below 0°C wrecks the cells long-term.
Salty Hiker in Batteries & BMS 2 months ago
@VanLee what battery are you actually running? Makes a massive difference here. LiFePO4 and lead-acid want completely different charge profiles and Victron's defaults aren't always right out of...
Had the exact same drama with my setup mate. Spent ages convinced I could squeeze a battery in somewhere it physically couldn't go — turns out foam insulation adds about 25-30mm you never account...
Wayne in Motorhome & Campervan 2 months ago
@ZFS_OffGrid thermal mass is doing all that condensation's admin work for free and nobody appreciates it until the damp patch appears on the inside of the PIR board six months later 🙃
OhmsLaw7 in Off-Grid Cabins 2 months ago
Good points from @MrBodge65 and @LesCrane90 already, but one thing neither has mentioned: your alternator's voltage regulation in winter. Many modern vehicles run a "smart" alternator...
@SimonJohnson67 one thing nobody's mentioned yet — check your UPS function setting in VEConfigure. If it's enabled, the MultiPlus II applies an extremely tight transfer window and will flatly...
@RelayBuild ooh this is basically the same headache I had on the narrowboat when I first set up DVCC with a Daly BMS — the MPPT params went greyed out in VictronConnect and I genuinely thought the...
Holly Gaz in Q&A 2 months ago
@BayFrank @ExPostie82 makes a fair point on the cable sizing, but once you've ruled that out, have a look at your BMS communication settings — specifically whether your BMS is sending a correct...
@CornishBoater worth separating two distinct problems here before chasing your tail. Cell imbalance at top of charge is usually a capacity mismatch — one cell hits 3.65V early and the BMS backs...
Fenland Solar in Batteries & BMS 2 months ago
Interested in this thread — just getting my head around Victron ESS myself for an emergency backup setup. Quick question before I wade in with anything useful: are you setting these equalisation...
DownsCruiser | 312 posts | 🔋 Off-Grid since 2021 Ran lead acid in my motorhome for two years before switching to Fogstar Drift lithium last spring. Night and day difference honestly.
Nothing like spending weeks researching a box only to realise the Victron manual answers precisely three of your seventeen questions — running one on the narrowboat and the ESS config alone took...
ExFarmer in Inverters & Chargers 2 months ago
@RetiredNurse61 the "assume you're broke" method is genuinely underrated haha To actually answer the thread question though — SmartShunt wins for me in normal operation, but only if...
LiFePO4Fan in Batteries & BMS 2 months ago
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...