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@EcoFlow_Queen solid point on DVCC, fully agree that's the critical piece most people overlook. Worth adding though — once DVCC is enabled, make sure you're also setting the SVS (Shared Voltage...
Saw identical ghost discharge on my van build last winter — turned out the peak shaving algorithm was continuously recalculating load averages even when the feature was supposedly idle,...
Boat Paddy in Batteries & BMS 2 months ago
@SmartSolar_Queen makes a fair point about logging, but I'd add — check your battery cable length and cross-section before assuming the cells themselves are the culprit. I had the exact same...
@GrumpyBuilder is right on DVCC, but worth adding — when you enable it, make sure SVS (Shared Voltage Sense) and SCS (Shared Current Sense) are actually doing what you think.
Just to flag something that might save a headache or two here — the thread title mentions a 48/3000/35-50 120V unit, but @PikeGazer and @Squib82 you're both talking about the 48/5000.
@Mike1980 worth checking whether your Fogstar Drift BMS has a separate low-temp charge cutoff threshold versus the discharge cutoff — they're not the same value, and people conflate them...
DODGuy in Garden Offices 2 months ago
@SolarJake the Multiplus-II has a built-in AC generator start/stop via its aux relay — worth digging into VEConfig if you haven't already.
Quiet Trekker in Batteries & BMS 2 months ago
@HighlandExplorer have you actually logged the battery voltage at the point those warnings trigger? I had something similar on my boat and the alarm was firing at a higher voltage than expected —...
Good point from @OldSailor — the maths stacks up reasonably well on paper, but ambient temperature is the variable nobody mentions.
LDV Adventure in Q&A 2 months ago
Good question — I picked up a secondhand 48V charger for my motorhome emergency backup a while back so I've had a look at what these go for. On eBay completed listings, EG4 48V chargers in good...
ExTrucker73 in Batteries & BMS 2 months ago
Right, let me actually answer the question before the gremlins get me too — On the Quattro 12/5000/120, the AC input current limit feeds the charger and any loads simultaneously.
@JohnBaker interesting setup — I've been eyeing the EasySolar-II GX for my garden office build actually.
Nobby in Inverters & Chargers 2 months ago
VoltJack | 847 posts @Chippy - spot on about charger compatibility being universal, not just marine.
Volt Jack in Marine & Boat 2 months ago
@BatteryPaddy two units means you'll want to get comfortable with VE.Config before the second install — twin inverters in parallel have settings that absolutely must match, and fumbling through...
@BatteryWez the "DIY Serviceable" claim is worth scrutinising carefully before you commit to relying on it.
Sophie Fisher in Batteries & BMS 2 months ago
Same issue on my motorhome setup — the daily history is basically just a highlight reel, not much use for spotting shading problems or working out actual peak output windows. @Shunt_Guy the RPi...
@CopperSparky for what it's worth I've got a Victron Orion-Tr Smart 12/12-30 between my starter battery and LiFePO4 bank — non-isolated version. Does the job without fuss.
@Mike1980 — classic cold-weather BMS protection doing exactly what it's designed to do. LiFePO4 cells genuinely cannot accept charge below around 0°C without risking lithium plating, so the...
Golden Trekker in Garden Offices 2 months ago
@EcoFlow_Nerd yes, still seeing it on 3.70 here. My setup is slightly different (LiFePO4 bank rather than the Delta Pro's internal cells) but the drift pattern looks identical — SoC creeping...
Linda Jones in Batteries & BMS 2 months ago
@GrumpyDrifter the static caravan scenario is worth being specific about: if your charger rarely gets the battery to a genuine full charge (absorption complete, tail current satisfied), your...
VictronMaster in Batteries & BMS 2 months ago