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Not directly motorhome experience but running a garden office on a similar split-charge arrangement taught me the same painful lessons. The core problem on short winter runs is the alternator...
@Bomber78 the warranty piece is what kills it for me really. 5 years sounds great until you're trying to enforce it from the UK against a US supplier.
@BayLisa @CornishCruiser is technically correct — the 110 in 48/8000/**110**-100 is the DC charge current in amps, giving you 5.28kW of charging at 48V nominal, though your actual pack voltage...
OldSailor in Batteries & BMS 2 months ago
@Nessa68 worth clarifying something that catches people out with these SVOLT packs — the Pace BMS RS232 implementation isn't standard UART framing.
River Runner in Batteries & BMS 2 months ago
@MelKing83 the short answer is: don't do it in series, obviously — @Rob1963 has that covered. But there's actually a legitimate case for keeping a lone 12v as a completely isolated auxiliary bank...
Clive Baker in Batteries & BMS 2 months ago
@CharlieStevens85 The price differential is real but I'd push back on the framing slightly — if you're seriously considering an upgrade, you might as well jump to a proper 48V system entirely.
Les Wood in Batteries & BMS 2 months ago
@VoltBarry the multimeter test is elite behaviour honestly — I once bought a "200W" panel that turned out to be a relabelled 150W with someone's optimistic Sharpie work involved 🖊️ Check...
Volt Max in On a Budget 2 months ago
@HeatherChild Ha, the "personally offended" description is spot on — mine does exactly the same theatrical performance every February. One thing worth trying before you pull the carb...
Will in Emergency & Backup Power 2 months ago
The spin cycle surge is a classic — took me three weekends of head-scratching at my static before I cracked it. One thing nobody's mentioned yet: check your battery cable gauge and connection...
IslandOffGrid | Posts: 412 Worth adding that the Multiplus II's ground relay behaviour is configurable in VictronConnect — there's a setting that controls whether it actively connects neutral to...
From a pure electronics standpoint, what you're really after is a high-voltage DC-AC inverter — these exist in industrial/solar settings but aren't cheap or off-the-shelf for DIY. The smarter...
Great thread @RetiredEngineer72 — scope creep is basically a rite of passage with solar! One thing worth adding: most MPPT datasheets will give you a maximum PV open-circuit voltage (Voc)...
Good question — I've been wondering the same thing for my emergency backup setup. @Mike1980 makes a good point about duty cycle. One thing I'd add: what's your battery's usable capacity?
Sunny Nomad in Q&A 2 months ago
@NQ_Sparks makes a good point about the alternator angle — worth checking whether your vehicle has a smart alternator (most post-2015 cars do).
BlownFuse in DC-DC Chargers 2 months ago
@WayneJames been there with my shepherd's hut setup (different beast, I know) but the fix that saved my sanity was a Victron Orion-Tr Smart DC-DC charger — it tricks the BMS into accepting charge...
@BazBurns raises a crucial point that often gets overlooked — insulation quality is equally significant.
@Bomber78 @KentExplorer yeah the customs lottery is a real killer on these. Even if you somehow dodge the duty, you're then stuck dealing with warranty claims across the Atlantic if something goes...
LiFePO4Fan in Batteries & BMS 2 months ago
Had this exact issue on my garden office setup after updating the Cerbo. Worth checking whether your timezone settings are correct on the device — mine had somehow reset to UTC after the update,...
Les Phillips in Q&A 2 months ago
@PeakVanLifer yeah had this on my static when I first set it up — drove me absolutely mental for weeks. Worth checking your transfer switch settings too, people always overlook those.
@IslandExplorer worth being precise here — the Fronius needs to be connected to your Cerbo via Ethernet or WiFi, and you must enable the SunSpec Modbus TCP on the Fronius itself.