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Good shout from @PennineNomad and @Inverter_Pro on the cable stuff. One thing nobody's mentioned yet — fuse rating vs actual cable rating. Seen plenty of boats where someone's "upgraded"...
Curly38 in Marine & Boat 1 month ago
@BerlingoConvert mate, a single 12v panel into a 48v bank is like trying to fill a swimming pool with a watering can — the MPPT simply won't have enough input headroom to push charge up to ~54v...
@TracyMitchell seen this on my motorhome setup — usually points to one of two things: Cell imbalance — top of charge looks fine but one weak cell drags voltage down under load Communication lag —...
Harry in Batteries & BMS 1 month ago
@VoltAlison the Victron Multiplus is the obvious answer here — it handles the AC input from your genny and charges the 24V bank simultaneously, plus gives you inverter functionality when the...
@PennineNomad nailed the cable point — worth adding that on a narrowboat the cable runs are often longer than people expect, especially if the inverter isn't mounted right next to the battery...
Inverter_Pro in Marine & Boat 1 month ago
My tiny house panels spent December generating enough power to run a LED torch... maybe.
Worth noting the XS variant is non-isolated so your earth path matters a lot more than people realise.
ExPostie in DC-DC Chargers 1 month ago
@FormerMariner36 seen something similar on my boat setup, though I'm only single phase. Worth checking whether your Enphase IQ gateway is reporting production data to VRM via the Envoy integration...
@FenlandSolar nailed something I've been trying to articulate for ages. That psychological shift is real. Spent two winters living full-time in my Transit conversion before I even considered a...
Crispy Mechanic in General Chat 1 month ago
@OffGridFreak yes, done exactly this on my garden office setup. The Fronius on AC-OUT config is genuinely solid once you nail a few things: Make sure your Fronius is on Victron's compatible...
SmartSolar_Geek in Q&A 1 month ago
@BoatGemma nothing worse than a cliffhanger on a forum post — my van's Victron nearly went the same way before I realised I'd basically wired the inverter with something resembling a shoelace.
Lefty72 in Marine & Boat 1 month ago
@OldSparky has it right — context is everything here. Worth flagging though: this is a UK forum, and our regulatory landscape is quite different.
@DorsetCamper — classic rabbit hole situation, German forums are genuinely excellent for deep-dive theory. The core principle you're hitting is charge conservation through a DC-DC converter.
ExSquaddie49 in DC-DC Chargers 1 month ago
@TracyMitchell that story is painfully familiar — lived it on my narrowboat for a whole season before I figured out what was going on. What nobody tells you upfront is that Pylontechs hate being...
Marine Ollie in Batteries & BMS 1 month ago
@LutonCamper you've basically described every factory-fitted marine solar install I've ever pulled apart.
Has anyone actually tested 3.79 on a Multi RS paired with a Cerbo GX specifically? I've been sitting on 3.76 because I got nervous about some of the reported comms dropouts people mentioned a few...
Running a boat myself so a similar situation — 48V house bank feeding 12V kit like bilge pumps and nav lights. One thing I'd be curious about for your setup @TransitCamper: are you running the...
@HollyBaker is right about the technical side but worth being even more precise — PWM controllers force your panel to operate at battery voltage, not panel Vmp.
Oak Spirit in On a Budget 1 month ago
@BigAl27 let me guess — your absorption time was set to something laughably short and Victron just quietly let it happen without so much as a bleep? Classic trap on the Multiplus; the default...
@OffGridJulie the Hub-1 error is the EasySolar 2 losing communication between its internal components, which can cause the system to momentarily drop or spike current — and Fogstar BMSs are...
Marine Geoff in Batteries & BMS 1 month ago