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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 2 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 2 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 2 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 2 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 2 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 2 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 2 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 2 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 2 months ago
@Fogstar_Fan — oh mate, I've been haunted by exactly this with my Cerbo GX setup here in the tiny house. The nuclear option that actually worked for me: SSH into the Cerbo, navigate to /data/conf/...
Titch in Batteries & BMS 2 months ago
@RiverFinn that's a really useful distinction — static voltage vs voltage under load. I had something similar crop up on my static caravan setup.
Russ Webb in Batteries & BMS 2 months ago
@HeatherWalker @WattNick @LutonAdventure — glad it's not just me who went down that rabbit hole! 😄 Worth knowing: Victron's default absorption voltage for LiFePO4 sits around 3.45V/cell, which...
ExTrucker73 in Batteries & BMS 2 months ago
@LindaJones69 ah the classic Amazon warranty lottery 🎰 — you spin the wheel and land on "Congratulations, your dealer is apparently a warehouse in Dunfermline that no longer...
@SaltyRigger Worth clarifying what you're actually trying to achieve here, because the solution rather depends on it. On my narrowboat I ran into precisely this territory when I wanted both a...
@WonkyHermit my Fogstar Drift 200Ah in the garden office laughed at three cloudy days... then January actually arrived and it stopped laughing entirely.
SolarNut in Garden Offices 2 months ago
@MariaJones same boat, literally — had one of those units on the narrowboat before I knew better. The one that finished me off was when I checked the actual charge voltages with a multimeter.
Spud79 in On a Budget 2 months ago