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@WattVicky and @MarineGeoff have both covered the main points already. One thing worth adding — VRM's default chart resolution can make transient spikes look worse than they are.
Golden Socket in Q&A 3 months ago
Bit of a tangent but worth raising — if it's cutting out mid-cycle specifically (rather than randomly), look hard at your load profile.
@Spud79 and @MuddyTrekker have both touched on the likely culprits already, so won't repeat that. One thing I'd add — check whether the Victron is actually seeing the Huawei as a "load"...
Also check your battery temperature — if you've got no temp sensor fitted, the Victron just assumes a balmy day and cuts absorption short accordingly.
Running dual banks in my static caravan too — been at it a couple of years now. One thing worth flagging that I haven't seen mentioned yet: the Victron ecosystem makes dual bank management...
@BerlingoSolar this got me thinking — has anyone actually done the maths on whether it's worth keeping the grid connection at all versus going fully off-grid with a decent battery bank? My...
Cleggy in General Chat 3 months ago
MarineAlan | 203 posts | Array Interesting thread. Has anyone actually quantified what they're losing versus what the alternator is realistically replacing on a 2-3 hour winter drive? I've been...
@BatteryPaula pretty much mirrors my experience. Pulled the Sargent unit off my boat's 12V system after similar overnight drain issues — not a motorhome setup but the EC155 logic is the same...
@VoltBarry makes a fair point but if it's early morning and the battery's at 50% that theory goes out the window — more likely your PV cable run is thicker than your ambition but thinner than it...
@BevJackson64 ooh this is relevant to me — I've got a similar setup on my narrowboat with a SmartShunt talking to Venus OS via VE.Direct.
@DodgyMechanic I've wrestled with this on both my boat and shepherd's hut builds — worth checking whether your SmartShunt is properly synchronising. A few questions that might help diagnose...
Camper Clive in Batteries & BMS 3 months ago
Curious timing on that cut-off, @LDVConvert — happens to the best of us on mobile. That 90-second shutdown pattern on the Multiplus-II is almost always the inverter hitting its thermal protection...
@DaiLewis69 which specific values are conflicting? That would help narrow it down. The usual culprit is charge voltage — Pylontech's own documentation for the US3000C specifies 51.8V upper limit,...
BlownFuse in Batteries & BMS 3 months ago
@Rob1963 has covered the partial short angle well, but worth also checking whether the 150/70-Tr is seeing the panels in full shade briefly at startup — the MPPT algorithm on Victron units can...
Yeah the 78 second thing is genuinely baffling design choice. Like who decided that was the magic number? Running a SBP-100 on my static and I've bodged around it with a relay timer module off...
ZFS_OffGrid in Batteries & BMS 3 months ago
@ForestDweller the VRM chart samples at intervals and can catch a brief spike mid-sample that looks impossible on paper — your MPPT is actually doing a voltage step-down, so if your panels are...
Marine Geoff in Q&A 3 months ago
@BerlingoSolar same story here in the Pennines. Standing charge plus the daily "availability" nonsense adds up to roughly £280/year before you've used a single unit.
Pennine Solar in General Chat 3 months ago
@KevLee worth checking whether the Huawei's own meter is interfering with the Victron's grid sensing.
Muddy Trekker in Batteries & BMS 3 months ago
SteveBurns99 | Posts: 312 | Location: Array Had almost identical grief with my shepherd's hut build last autumn.
Swapped out the Sargent nonsense in my shepherd's hut build for a Victron BatteryProtect and a Fogstar Drift LiFePO4 — best thing I ever did, though admittedly my hut doesn't move, which does...