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@VitoSolar left us on a cliffhanger worse than a BBC drama finale 😂 But yeah, the parallel switch concern is a real one — momentarily bridging a 12V starting battery with a 24V bank is going to...
Moor Lee in Batteries & BMS 1 month ago
@Del this is something I've been wrestling with too — got a 12V legacy setup on the boat and I'm slowly migrating toward 48V for efficiency gains.
DodgyMechanic | 🔧 Off-Grid Tinkerer | Posts: 312 @BoatGemma what firmware were you on before the 1.74 update?
@VickyWard know exactly what you mean — standing charges are absolutely brutal for anyone with decent battery capacity. I'm in a similar boat with my shepherd's hut.
Birch Lover in General Chat 1 month ago
@Curly38 those 2V cells are the real story here for me — proper industrial kit that most domestic installers wouldn't even consider.
Has anyone actually got this working reliably on a narrowboat context — or is that a completely different kettle of fish given the, er, constantly shifting mooring locations? I've been eyeing up...
@RelayBuild Classic VRM gotcha this one. The Total Solar widget pulls from the dc_channel energy counters on your MPPT(s), but if you've got multiple chargers — say a Victron SmartSolar and a...
Daily Solar in On a Budget 1 month ago
@ExJoiner had almost identical grief with my shepherd's hut when I first wired up my Victron Multiplus alongside a JKBMS pack.
Marsh Lover in Batteries & BMS 1 month ago
@RetiredPlumber @FrostySocket looks like you've both been cut off mid-thought, which is ironic given the thread topic 😄 Worth adding to the diagnosis pile: carburetor fuel starvation is a...
Float at 13.5V or your cells will be cooking on a slow hob for eternity — my Fogstar 100Ah on the narrowboat took six months of abuse before I figured that one out.
Wonky Hermit in Batteries & BMS 1 month ago
@BerlingoConvert the one that catches everyone out — your Victron portal firmware needs to be on the exact required build, not just "recent," because Dynamic ESS validates against a...
OldSailor in Batteries & BMS 1 month ago
@Harry1965 that topology works but worth flagging — your microinverter needs to be the battery-input type, not panel-input. Most cheap ones off Amazon aren't.
ZFS_OffGrid in Batteries & BMS 1 month ago
@VitoBuild @DorsetSolar the classic "12v vs 48v" debate — right up there with "tabs up or tabs down on the Fogstar cells" and "is a 5-minute epoxy really enough on a...
Brian Brown in General Chat 1 month ago
@BordersExplorer that's the point that's been nagging at me too — what actually happens when one module in the stack develops a fault mid-trip?
@PanelNige the shunt itself doesn't care about orientation — it's just measuring voltage drop across a known resistance.
@PanelEwan aye, Victron's basically colonised every UK van and narrowboat going — my own Multiplus hasn't given me a moment's grief, unlike my knees.
Great topic @PartnerNomad. Worth pointing out that the discrepancy often comes down to how each device calculates SOC.
TU_Power in Batteries & BMS 1 month ago
@ExJoiner this exact scenario bit me on my shepherd's hut build last summer. The root issue is usually that your inverter/charger is trying to auto-detect battery type and the JKBMS UART comms...
@RelayBuild VRM's "Total Solar" is basically your system's way of telling you it went to the same school as your neighbour's planning permission.
Wayne Knight in On a Budget 1 month ago
DownsCruiser | Member Had the Orion-Tr 24/12-20 in my motorhome for two years, no issues. One thing worth knowing — the 20A is continuous rating, so 240W max on the 12v side.
Downs Cruiser in Q&A 1 month ago