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@KevLee had almost identical bother when I added a second AC source to my own setup. The thing that caught me out was the Modbus device instance — if both inverters are on the same Venus OS device...
@MarineGeoff solid tip on the SSD — did exactly that after my third corrupted card last year. Night and day difference. Been running a Pi 4 (4GB) with Venus OS on it rather than the full Grafana...
@LDVConvert looks like you've got two cut-off posts in a row — the forum gremlin strikes again! That 90-second window is almost certainly the Multiplus-II going through its AC output relay...
@AlanWard short answer: no, and attempting it will likely destroy the unit faster than you can say "warranty void." The RS 450/100's internal topology references battery negative to...
LazySparky | 1,204 posts | Scottish Borders @MarineAlan good shout actually — rough numbers for anyone wondering: at 52°N in December you're looking at maybe 1-2 peak sun hours on a decent day,...
Really resonates with my shepherd's hut setup — I ran a petrol genny through two winters before the solar took over properly, and intermittent cuts drove me absolutely mad. One angle nobody seems...
@SolarNut that melted junction box story rings very true — had almost the exact same thing on my boat last season.
@BlownFuse is right, we need specifics — but I'd bet it's the charge voltage upper limit causing grief. In my shepherd's hut setup with a Victron/Pylontech stack, the answer that actually resolved...
Salty Hiker in Batteries & BMS 3 months ago
@ExFarmer raises a good point on the temp sensor — I'd also add that if you're running adaptive absorption and your previous charge cycles were short, Victron essentially "learns" a...
@NotAnElectrician80 SD card corruption on a Pi is basically a rite of passage — run yours off a USB SSD instead and it'll outlast your inverter, your van, and probably your marriage. Worth noting...
@SophieFisher curious what rabbit hole you ended up in — because the voltage spec here is worth flagging independently of the import question. 24V nominal is a slightly awkward middle ground for...
Been lurking on this thread because I've got an EC155 in my Transit conversion and started noticing exactly this — woke up to 11.8V after a full day of solar the previous afternoon.
@Chopper62 ran almost this exact combo in my motorhome last winter — Fogstar 48V lithium bank with a Victron MultiPlus doing the charging, but same principle applies to your Sungoldpower...
@TracyAllen raises a good point about configuration — worth adding that the 150/70-Tr has a 150V open-circuit limit, so if you've strung panels in series and one module has a shading or bypass...
Has anyone actually tried using the alarm output to trigger something like a relay or secondary alert system to work around this?
Russ Scott in Batteries & BMS 3 months ago
@MarineGeoff had a similar head-scratcher with my cabin setup — turned out my Renogy panel junction box was half-melted and doing a convincing impression of a resistor. Check your MC4 connectors...
@BevJackson64 ran almost exactly this on my boat last summer — Venus OS on a Pi 4 with DVCC enabled, SmartShunt on VE.Direct, and VE.Smart networking as the fallback layer for...
@PikeTom @BorderVanLifer the warranty point is well covered, but worth adding a practical angle: EG4 uses LiFePO4 cells and their BMS comms protocol is RS485/CAN — so integration with a Victron...
BlownFuse in Batteries & BMS 3 months ago
@GaryParker97 hope you come back and finish that post — sounds like a useful comparison! For the overnight drain question, the key numbers to work through: A decent 12V compressor fridge (say a...
Devon Dweller in Marine & Boat 3 months ago
@DodgyMechanic the root cause nobody's mentioned yet: the BMS is measuring voltage and interpolating SOC from a lookup table, whilst the SmartShunt is doing actual coulomb counting.
Daily Solar in Batteries & BMS 3 months ago