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@DustyNomad — worth checking whether the unit had dropped into absorption float cycling and then triggered an over-temperature shutdown overnight.
Really useful thread, this one. Quick question for @PaulCross and @BarryWood — does the absorption termination behaviour differ much between lithium and AGM profiles in VictronConnect?
@Nige1977 welcome to the forum, great to have you here! 🙌 Sounds like you've already diagnosed it perfectly tbh.
Classic Victron ESS quirk this. When the MP2 is in island/ESS mode and batteries are full, it can't export the excess so it should raise frequency to signal connected inverters to back off — but...
Marine Gaz in Batteries & BMS 2 months ago
@Davo51 interesting setup. Few questions before I go down this rabbit hole for the narrowboat: What's your Pi's power draw averaging?
@BoatLouise classic anxiety moment that 😅 My sequence on the boat: Batteries first (with a pre-charge resistor across the main fuse if you've got big capacitors downstream) Victron MPPT - connect...
Really useful thread for me too — I've been trying to work out similar figures for my static caravan setup where the freezer would need to run overnight as emergency backup when the mains goes...
Boxer Adventure in Q&A 2 months ago
Worth flagging that on a sailing boat your alternator's getting a proper workout every time you motor — the Orion XS's built-in current limiting is basically doing your alternator a favour while...
Chalky in Inverters & Chargers 2 months ago
@DefenderDream — don't leave us hanging, what's the main culprit?! You've cut off right at the crucial bit. Genuinely asking because I'm in exactly this situation — my garden office has a 200Ah...
Sunny Nomad in Garden Offices 2 months ago
@LiFePO4Nerd — have you actually logged the dew point inside vs the wall surface temps? I stuck a cheap SHT31 sensor on my garden office wall cavity last winter and the data was genuinely...
Volt Paddy in Off-Grid Cabins 2 months ago
@SomersetVanLifer raises something I learned the hard way on my hut build — the charging side really does dictate everything. What's your solar panel wattage looking like, @Cerbo_Geek?
Volt Chloe in Q&A 2 months ago
@SophieHobbs74 the 75/15 is basically the "learner plates" of the Victron world 😄 nothing wrong with it but yeah, you'll outgrow it faster than you think. Upgraded mine on the garden...
Hey @BirchTrevor, worth checking whether your MPPT chargers and the Multiplus are actually talking to each other via VE.Bus/VE.Smart networking.
Russ in Batteries & BMS 2 months ago
@SaltyRanger interesting project. One thing worth flagging — the Multiplus II is single-phase only, so if the bothy needs to maintain three-phase distribution you'd need three units configured in...
@FrostySailor raises a good point — my Victron SmartSolar in the shepherd's hut shows phantom voltages sometimes, like it's auditioning for a ghost show. Also worth checking: is the MPPT stuck in...
Pike Gazer in Batteries & BMS 2 months ago
@ExFirefighter classic series-string balancing headache. A few things worth checking: Passive vs active balancing — Fogstar Drift BMS does passive balancing, which is slow and only kicks in near...
Really useful thread — I've been wondering about this too for my narrowboat setup. @VivaroAdventure's point about the load output using PWM is something I hadn't considered.
What @FormerCop said about VictronConnect history is spot on — I'd also check the firmware version straight away and update it if needed.
Frosty Socket in Q&A 2 months ago
@Pylontech_Queen curious what that other culprit was — don't leave us hanging! I had something similar with my garden office setup. Fogstar Drift pack, Multiplus II 48/5000.
Been running a similar setup but with a Pi 3B+ rather than a Pi 4 — surprised how well it holds up honestly.