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@RogerJackson been down this rabbit hole on the narrowboat. The Lynx Shunt itself is pretty frugal — it's the Cerbo GX sitting there like a nosy neighbour, awake at all hours, that adds up over a...
Panel Steve in Q&A 3 weeks ago
@BoatIan short answer: technically yes, but it's a really bad idea in practice. The problem is compressor fridges — especially units like the Isotherm or Waeco/Dometic range — need a stable...
JackeryGuy in Q&A 3 weeks ago
@LutonCamper — worth flagging that vertical mounting of MP2s isn't straightforward. Victron's own documentation specifies clearance requirements that become awkward when stacking, particularly...
Hey @48VQueen, yes, seen this a fair bit with parallel setups. A couple of things worth checking: First, make sure both units are running identical firmware - even a minor version mismatch can...
@WezFrost is on the right track with DC-DC — been running a Victron Orion-Tr Smart 30A in the narrowboat for two seasons now and the difference is significant.
@Mike1980 the fundamental issue nobody's addressing here is the mismatch between PWM topology and lithium chemistry.
Compo in On a Budget 3 weeks ago
@BoatPete is right about compliance being the bigger headache. For my garden office setup I went full off-grid specifically to sidestep all that G98/G99 DNO notification faff.
@SophieFisher what BMS are you running on the boat? That's going to be the limiting factor for whether you can actually pull individual cell voltages out. I'm looking at doing something similar...
Mike in Batteries & BMS 3 weeks ago
@BatteryWez classic BMZ "deep sleep" drama — you'll need to tickle it awake with a small external charge source (even a cheap bench PSU will do) to get the cell voltage above the BMS...
48VQueen in Q&A 3 weeks ago
Ran into exactly this situation last winter with my garden office setup. Short answer: trust neither blindly, but the BMS wins for protection decisions. Here's my reasoning.
Carl Baker in Batteries & BMS 3 weeks ago
@Macca97 worth noting that the thread title mentions ESS specifically — if you're running ESS mode, the MPPT behaviour via VE.Can can be quite different to what you'd expect.
So I've been scratching my head over this one for a while and figured someone here would know the answer. On the boat I've got a Victron MPPT running two 200W panels, and I'm wondering whether I...
Boat Ian in Q&A 3 weeks ago
Been tinkering with this exact problem on my static caravan setup and wondered if anyone else has hit the same wall. I'm trying to pull Agile Octopus pricing data through my Cerbo GX into Node-RED...
PanelChris | 847 posts @MV_Marine solid walls are a nightmare, aren't they — all that thermal mass working against you in winter rather than for you. One thing worth considering alongside your...
Panel Chris in Off-Grid Cabins 3 weeks ago
Had this exact same thing on my motorhome setup. The fix that worked for me was connecting both MPPTs via VE.Direct to a Cerbo GX — lets you set a proper networked charge algorithm so they're not...
Harry in Q&A 3 weeks ago
Been thinking about this a lot lately after chatting to a neighbour who's on the grid and keeps seeing his SolarEdge cut out on bright summer days. His street voltage was sitting at 257V last July...
So I'm finally getting round to sorting the solar on the boat after one of my original panels developed a hotspot and I've decided to just replace the lot rather than mix old and new. Currently...
HalfAJob in Q&A 3 weeks ago
Been down this rabbit hole myself when I was sorting out a tiny 12v-from-3v boost setup on the boat for some low-draw sensors — spoiler: it's a nightmare finding anything purpose-built. The honest...
Mate, nothing says "quality product" like an inverter that arrives with the magic smoke already inside it, waiting to escape at the earliest opportunity. Had a similar rodeo with a...
Pretty sure that 600V is the max input per MPPT, not the whole inverter combined. Most hybrid inverters work that way — each MPPT tracker has its own voltage ceiling. Worth double-checking the EG4...
PV_Fan in Inverters & Chargers 3 weeks ago