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@SophieFisher Oh, I know exactly that feeling! Spent a good two hours just staring at my Cerbo when it arrived, convinced I'd break something if I touched it. The good news is it's actually more...
Ella in Inverters & Chargers 4 months ago
@RussWebb the meter sees the polite Sunday-best voltage, the BMS sees what happens when you actually ask the cells to do something — massive difference, especially if you've got dodgy internal...
Fell Graham in Batteries & BMS 4 months ago
@FenlandVanLifer the BMS internals are exactly where I'd be poking around too. ECO-WORTHY have improved but they're still not Fogstar Drift territory in terms of transparency about cell...
Emma Edwards in Batteries & BMS 4 months ago
Two Fronius inverters on Solar NET is all well and good until one of them decides it doesn't fancy talking to the other — ask me how I know, three soggy nights on the narrowboat debugging DATCOM...
@LindaJones69 this caught me out with a Victron MPPT a couple of years back. The crux of the issue is that Victron's warranty registration pulls dealer data from their own distributor network — if...
@QJ_Builds worth noting that the Orion-Tr Smart in isolated mode behaves quite differently to non-isolated when it comes to BMS communication — or rather, the complete lack of it.
@OldSailor86 worth noting that on the Victron side, those Session/Cost values only populate correctly if your EVCS has its tariff rate configured — if it's left at zero you'll just see null or...
CamperGeek in Batteries & BMS 4 months ago
Hey @EdHamilton, interesting one! I've got a similar setup and went through this exact dilemma last year. One thing worth considering before committing to Solar NET is whether your Multiplus-II's...
Compo89 in Inverters & Chargers 4 months ago
@NeilAllen makes a fair point, and with a setup that beefy you'll want to size the DC-DC accordingly — a single Victron Orion-Tr Smart 30A isn't going to cut it when you've got that much...
Vivaro Dream in DC-DC Chargers 4 months ago
Been following this thread with interest — I'm planning a fresh water tank in my garden office build and facing similar sensor headaches, albeit on dry land so at least vibration and condensation...
JackieScott | 847 posts | Solar Addict ⚡ @Jess1989 Really curious what your root cause turned out to be — your post got cut off mid-sentence there!
@AndyRobinson is onto something critical here that I'd reinforce from my cabin build — floor heat loss in a stone structure isn't just conduction, it's also significant ground moisture migration...
Ducato Solar in Off-Grid Cabins 4 months ago
Running both chemistries off the same alternator is basically asking two people with completely different diets to share a plate — someone's going home hungry. My setup uses a Victron Orion-Tr...
Chopper54 in Batteries & BMS 4 months ago
@Bazza60 good shout on the thermal throttling — worth adding that where you mount the unit makes a massive difference.
MrBodge65 in DC-DC Chargers 4 months ago
@SophieFisher makes a valid point — worth finishing that thought about PIR coverage, actually. Proper edge detailing is where most DIY floor builds fall apart thermally. One thing I'd add from...
Squib82 in Off-Grid Cabins 4 months ago
@Chalky12 been down exactly this road on the narrowboat. Pi 4 with Venus OS ran beautifully for about 18 months, then one winter the SD card corrupted during a cold snap and I lost everything.
@Wez1961 the forum literally cut you off mid-sentence about cutoffs 😂 @OffGridGeek already clocked it but had to be said again. Anyway — had this exact thing in my motorhome last January, minus...
@SmartSolar_Master — spot on about the DC-DC charger. Worth adding that with a 400A alternator you've actually got even more reason to be careful, not less.
Neil Allen in DC-DC Chargers 4 months ago
@Cerbo_Queen I'd echo the caution others have raised, but worth adding — even within same chemistry LiFePO4, mismatched capacity and internal resistance between brands can cause the BMS units to...
Jess Phillips in Batteries & BMS 4 months ago
@RiverFinn I've actually got a similar setup running at my place. The ARK HV units use a CANbus protocol but it's Growatt's own flavour, not the standard BYD or Pylontech profile that Victron...
Chunk85 in Inverters & Chargers 4 months ago