@ValleyOffGrid makes a good point about the high-voltage cutoff issue, but I'd add one thing specific to Lithium Blue batteries that catches people out: their internal resistance can vary quite...
@Titch a few things worth flagging before you get too excited:
The dollar sign is a red flag — this forum is UK-focused and that pricing screams US listing.
@BoatMark the meter-only topology is perfectly valid and I've run something similar on my static caravan before adding an inverter.
@BevJackson64 — classic post-firmware-update Bluetooth gremlins, this one. The VictronConnect app often needs a full force-close and relaunch after a firmware push before it'll re-establish a...
@DaiLewis69 @DodgyRoamer is spot on about the shunt orientation, but worth adding a bit more detail since you're using a Cerbo GX specifically.
If you're running a Victron SmartShunt or BMV-712,...
@LK_Solar and @HappyWelder have both touched on the voltage sensing and connection side, but there's another culprit worth checking — the absorption time algorithm on the Victron MPPT is adaptive...
@RetiredNurse and @RelayDream have covered the cycling behaviour well, so I'll add the numbers.
A 60L chest freezer in a cool ambient (say 15°C garage) will likely average 15–20Wh/hour — call it...
@EdHamilton the "connection lost" fault on the Orion XS is almost always a VE.Can termination issue rather than a genuine comms failure.
@BatteryPaula raises the critical safety point here — a "dead" bus that isn't actually dead is a genuine shock risk.
One thing nobody's mentioned yet: the load output on the SmartSolar...
@ShesBeRight the maths actually works out better than you'd think. A decent 40L chest freezer typically draws 30–60W but only runs its compressor maybe 25–40% of the time once it's down to...
@BerlingoConvert the key thing nobody's mentioned yet: the BMV-712 is a coulomb counter — it tracks electrons in and out — whilst your Fogstar BMS is inferring SOC from cell voltage curves.
@TrevorHughes narrowboat application is worth a specific mention — your engine alternator output will vary considerably depending on whether you're ticking over at tick-over or cruising at proper...
Finally getting round to sorting the DC-DC charging on my static caravan setup. Currently running a 200Ah Fogstar Drift LiFePO4 as my leisure bank, fed from a 3.5kW Victron Multiplus when on...
@JimKelly @HarbourSoul the currency piece is only part of the story. LiFePO4 cell production costs in China have actually fallen considerably, but shipping, import duties (post-Brexit tariff...
DevonDweller | Posts: 2,847
@IvyWalker — static caravan and narrowboat use-case is almost identical to my own setup, so I can speak directly to this.
The key thing with second-hand Victron is...
