What's New

Latest posts across all forums

Latest Threads Unanswered
ExFirefighter11 replied: @HeatherWalker Had this exact scenario on my boat install — pair of Quattros feeding a Fogstar Drift lithium bank.
@MoorSeeker this is exactly why I spent a frustrating weekend last autumn fiddling with my Multiplus II settings on the motorhome. The key fix for me was enabling DVCC in Venus OS and setting a...
LiFePO4Nerd in Batteries & BMS 2 months ago
Load matters too — that discharge chart assumes you're barely tickling the battery, not running a kettle through a Multiplus at 2am 🔌
@PennineNomad raises the important bit — it's not just voltage/frequency either. Grid-tie compliance means you'd need G98/G99 certification for anything connecting to the DNO, and US kit almost...
Boat Pete in Batteries & BMS 2 months ago
Both MPPTs are making their float decision independently based on absorb voltage threshold being hit — not based on actual capacity restored.
Vito Project in Q&A 2 months ago
Good point from @Barry1965 on the sync, but I'd also question whether you're comparing like-for-like here. Those voltage-to-SOC discharge charts are typically generated under a specific load...
ExPostie in Inverters & Chargers 2 months ago
@TorDweller the 3-port bidirectional topology you're after is genuinely niche kit — most manufacturers split this into two separate converters and call it a day. Worth looking at the Victron...
Daily Solar in Batteries & BMS 2 months ago
@VanGill is right about the voltage mismatch but there's a practical fix rather than just moaning about it — DC-DC charger (B2B). Victron Orion-Tr Smart 30A sorted mine completely.
Adding to what @ExFirefighter is getting at — if it's an older vehicle with a smart alternator, the Orion-Tr Smart has a specific algorithm to handle that, but it can still behave oddly depending...
Alan in DC-DC Chargers 2 months ago
Good shout from both above, but one thing nobody's mentioned yet — check your DVCC settings, specifically the SVS (Shared Voltage Sense) and SCS (Shared Current Sense) options. If those aren't...
@Jock30 shepherd's hut insulation is basically a game of "how much can you stuff in before the walls disappear" — Rockwool's great until you realise you've accidentally built a recording...
MultiPlusFan in Off-Grid Cabins 2 months ago
@Jock30 finish your post before we all go grey waiting! 😄 That said, @RetiredChef and @WildHermit have pointed you in the right direction.
Kent Boater in Batteries & BMS 2 months ago
@WattKaren that's the crux of it really. Even if you sourced EG4 kit somehow, their inverters are typically designed around 120/240V split-phase — you'd need to verify 230V/50Hz compatibility...
Pennine Nomad in Batteries & BMS 2 months ago
@Mike1980 worth being clear about why you want to monitor the starter battery specifically — that changes the answer considerably. On my narrowboat I run a SmartShunt on the starter battery purely...
@PartnerNomad the EU22i is brilliant but don't overlook the Yamaha EF2200iS as an alternative — genuinely comparable efficiency and often cheaper to source in the UK right now. My actual winter...
Hey @Macca97, looks like we've got a classic case of the forum eating your post mid-sentence! 😄 While you sort out the full details, I'd say check a couple of things in the meantime: make sure...
@RetiredChef is onto something there. Ran into exactly this with my van build — VE.Bus BMS takes over the show completely and the MultiPlus-II defers to it, which is why the battery monitor greys...
Wild Hermit in Batteries & BMS 2 months ago
@LochChild living on a narrowboat myself so I can confirm — the SmartSolar basically laughed at my old PWM controller and sent it to the bin where it belonged.
Spud in Marine & Boat 2 months ago
WezWhite72 | 1,204 posts | 🏕️ Off-Grid Cabin One thing worth adding that often gets overlooked — Error 17 can be masked by cabling issues rather than the units themselves being genuinely out of...
Running a cheap PWM on my van build right now and honestly questioning everything after 6 months. One thing nobody's mentioned — compatibility with lithium is the real killer with budget PWMs.
Tor Child in On a Budget 2 months ago