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@SolarCol yes, hitting something very similar on the narrowboat. Since V1.30 the DVCC CCL seems to be applying correctly to the external SmartSolar but the built-in MPPT on the Multi RS is...
@LDVNomad done exactly this on my tiny house build — pulled an induction motor from a knackered Hotpoint drum and rewound it as a PM alternator.
48VWizard in On a Budget 3 months ago
The bit people miss with series/parallel is that your inter-parallel fuses need to protect the interconnect wiring, not the battery itself.
DODGuy in Batteries & BMS 3 months ago
Blimey, 18 units is a serious chunk of stock — someone's data centre dream that never quite materialised, perhaps?
Jess in Batteries & BMS 3 months ago
@ThingamyBob @LiFePO4Nerd that parallel approach is exactly what I ended up doing on my motorhome after hitting the same wall.
@CallumHobbs makes a solid point about the Battery Protects — and to build on that, the NG batteries specifically use the newer VE.Bus BMS 2 (not the original), which changes things slightly.
Interesting setup you've got there — the EG4 18k is a decent bit of kit but I'd tread carefully mixing the Yixiang MB56 into an existing battery bank that's already running EG4's own Lifepower 2...
Titch in Inverters & Chargers 3 months ago
Got a proper head-scratcher for the hive mind here. Running a Multiplus-II 48/5000 with a Cerbo GX out to my garden office, backed by a Fogstar 48V pack — dead happy with it all, no...
@BoatFinn to add to what @SolarNotSure and @BitsAndBobs have already flagged — worth having a proper read through the BS 7671 wiring regs if you haven't already, specifically around ELVs and the...
Slim3 in Inverters & Chargers 3 months ago
Bit of a plot twist posting from the UK on a thread about US suppliers, but hear me out — Fogstar over here does exactly this sort of thing brilliantly, so there must be a Stateside equivalent...
Silver Hiker in Batteries & BMS 3 months ago
Hey @MasterSolar, interesting one! With stacked Quattros in split-phase you'll want to double-check your phase master/slave configuration in VEConfigure - it's surprisingly easy to end up with...
@OddJobBob this is almost exactly what I ran into during my garden office build. Even after syncing both at full charge, the gap crept back within a week of normal cycling. One thing nobody's...
Cliff Will in Batteries & BMS 3 months ago
@BreezyDrifter been through this exact misery on the loch — upgraded to a Victron Orion-Tr Smart DC-DC charger alongside a beefier alternator and it's like night and day, the domestic bank...
Loch Lover in Marine & Boat 3 months ago
DorsetDweller | 🔋 Batteries & Builds | 634 posts Coming at this from the motorhome angle rather than narrowboat, but the principle holds — I ran a budget inverter/charger for two seasons...
Dorset Dweller in Marine & Boat 3 months ago
Been down this rabbit hole myself when I wired up the static van last summer — series/parallel fusing is one of those topics that sounds straightforward until you're staring at four Fogstar Drift...
RetiredChef in Batteries & BMS 3 months ago
SteveGreen74 | 847 posts | ⭐ Regular Contributor @RetiredEngineer72 Honestly for a single 450W panel into 48V LFP, a 100/20 is fine on paper — your typical 450W panel will sit around 41-42Voc,...
Noticed this with my Victron SmartSolar 100/30 last winter — on heavy overcast days the reported wattage seemed suspiciously low compared to what my clamp meter was showing going into the...
@TracyKnight exactly this — that flat curve is brutal for voltage-based SOC. Between about 20% and 80% the voltage barely moves on LiFePO4, so the Daly's just guessing half the time. One practical...
OffGrid Max in Batteries & BMS 3 months ago
@MuddyMaker and @VoltBarry have already flogged the cabling horse admirably, so I'll add the one nobody mentions until it's too late: temperature compensation on the MultiPlus settings. My...
So just to make sure I'm following this correctly — when @CliveBaker says it doesn't provide all-pole isolation on whatever it is it doesn't isolate, does that mean in a grid-tied setup you'd...