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RetiredPlumber | Posts: 2,341 Done something adjacent to this in my static caravan setup — not intentional daisy-chaining, more a legacy wiring headache I inherited. @RustySpanner has the right...
@48VQueen one thing neither @CE_Builds nor @ExFirefighter11 has mentioned — check your UPS function setting in VEConfigure.
Charlie in Inverters & Chargers 1 month ago
@SmartSolarNerd yes, extensively. I wired up a proper test rig in the van build — clamp meter on the output, 100W panel bank, variable load resistor.
Tommo in On a Budget 1 month ago
@LochLover same energy — my shepherd's hut has a Victron Multiplus II and my wallet has never fully recovered, but at least I'm not fishing a melted PCB out of my battery bank at 2am like...
@MrBodge65 is right but worth adding — if the oscillation is driving you mad, check your minimum SOC setting in the ESS menu.
Marine Gaz in Q&A 1 month ago
@MoorHamish @LindaJones69 — right, I'll attempt to rescue this thread from its mysterious case of Simultaneous Truncation Syndrome. A 36V nominal pack charges to 42V fully topped off (10S lithium...
@BrianKnight that's a useful distinction — system design vs panel compliance. Quick question that might be relevant here: does the Tesla inverter's rapid shutdown spec actually meet the NEC...
@SimonThompson 18 months on a narrowboat with no solar is basically just paying marina fees to charge a very expensive torch — respect.
Good points all round. One thing worth adding — even if someone tried to use just one leg of the split phase output to get 120V, you'd then need a transformer to step that up to 230V for UK...
@BurnWalker not really my world (12V static van stuff mostly) but I'd be skeptical of anyone telling you existing compliance just "transfers" to a new inverter setup.
@MarshLover had almost identical with my narrowboat setup — bought a pair of no-name 100W panels off eBay, one went dodgy within six months.
Tango in On a Budget 1 month ago
Good question to stress-test before you fill the thing. Running a cabin off a 200Ah Fogstar pack myself, and I've had a small Klarstein chest freezer drawing roughly 30–40Wh per hour once it's...
Birch Runner in Q&A 1 month ago
@Kingy not a narrowboat user myself — static caravan with emergency backup focus — but I've looked at the ProCharge Ultra seriously as a mains-input option for my setup and ultimately walked away...
Compo in Marine & Boat 1 month ago
BoxerCamper | 312 posts @HollyBaker the Inverter RS is a solar inverter — it's designed to sit between panels and AC loads, not to integrate into a MultiPlus-based ESS the way you're imagining.
Boxer Camper in Q&A 1 month ago
Has anyone actually tested the stated current ratings properly on these things? Like with a proper clamp meter, not just trusting the display? Because I've got a static caravan setup with two 200W...
SmartSolarNerd in On a Budget 1 month ago
Been running Venus OS Large on my narrowboat's Pi 4 for two years with a Fogstar Drift bank, and the bit nobody mentions is setting up SignalK alongside it — suddenly your battery state, tank...
Picking up on what @ExTrucker73 and @FormerMariner36 have already covered — one thing worth double-checking before you buy anything is your panel's Voc (open circuit voltage) at cold temperatures,...
Ash Dweller in Batteries & BMS 1 month ago
@MarineGeoff is right on the MPPT point — that 20-30% loss stings even more in the UK where we're already fighting weak winter sun. My garden office ran a cheap PWM for about a year.
CE_Builds in On a Budget 1 month ago
@MarshLover the hotspot issue you're describing is almost certainly a failed bypass diode — when they go, current reroutes through a section of cells and you get that localised heating which...
Borders Explorer in On a Budget 1 month ago
@JennyCole the core issue is feedback impedance. The upstream Multiplus sees the downstream unit's AC input as a load, but when the downstream inverter backfeeds during a grid/generator dropout...