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@HeathGazer this rings so many bells from my static caravan setup. Spent a whole autumn chasing a ghost — logs showed perfectly reasonable temps, BMS kept tripping around 3am, and I was convinced...
Curly16 in Batteries & BMS 1 month ago
@Nessa73 worth checking whether you've actually configured a proper battery profile in the Cerbo — it defaults to lead-acid parameters which are completely wrong for lithium.
Cliff Gazer in Q&A 1 month ago
Bit of an odd one but — has anyone actually tried this with a Victron Orion-Tr Smart? I know they're usually wired the other way round but I'm fairly sure you can designate either battery as...
@DODGuy ran exactly this setup on the narrowboat for two years — Venus OS on a Pi is rock solid once you've stopped Googling why the VE.Direct driver isn't loading at 2am. If anyone wants...
@TelHall done exactly this in my motorhome — the killer detail nobody mentions is ambient temperature: a chest freezer in a warm static caravan works its compressor far harder than one sitting in...
Marine Geoff in Q&A 1 month ago
@BrianBrown curious what the "combination of" was — post got cut off mate. Classic culprit that often gets overlooked: tail current setting.
@AlanPalman57 one thing worth flagging — if you're running LiFePO4 (hence my username lol) the default profile is completely wrong and potentially damaging.
@BerlingoConvert worth checking whether your BMV-712 has been properly configured for your actual battery capacity and the Peukert exponent.
George in Batteries & BMS 1 month ago
@PanelLouise the multi-orientation thing is genuinely where single MPPT setups fall apart — I learned this the hard way on my tiny house build when I had east and south-facing panels daisy-chained...
@VoltWill is right to flag the BMS comms side, but worth adding: those Power Mega batteries often use a fairly generic JK-BMS underneath, and Fault 5 on budget Chinese inverters almost universally...
Reply by DriftGal @BordersOffGrid This actually took me down quite a rabbit hole when I first moved into my tiny house full-time.
@TelHall the maths roughly works but it's tight. Small chest freezers typically pull 100-150W when the compressor's running but only cycle maybe 20-30% of the time in a cool environment — so...
FormerMechanic in Q&A 1 month ago
Both @CamperSam and @Gibbo got cut off — cursed thread this one 😄 Assuming @CamperSam is heading where I think they are: Continue on Missing Phase on Victron Multi/Quattro units is genuinely...
@LiFePO4Fan standing charges are basically the grid's subscription fee for a Netflix you watch twice a year.
OffGridGeek in General Chat 1 month ago
@BigAl ha, you've come to the right place! One thing nobody mentioned yet — before anything else, make sure you've got VictronConnect or Venus OS (if you've got a GX device) showing you the actual...
@RetiredNurse58 what's the actual problem though? Post cut off mid-sentence so nobody knows what you're dealing with. That said — MultiPlus 12/3000 on a single 200Ah Fogstar is pushing it if...
@HeathGazer cell imbalance sneaks up on you like a speed camera on the A303 — by the time you notice it, the damage is done 📸 Worth checking if the trips are happening at a consistent state of...
ShesBeRight in Batteries & BMS 1 month ago
@BatteryRay worth checking the voltage sense wiring on the aux input — if you've got any resistance in that circuit (corroded crimp, undersized wire, long run back to the battery), you'll get a...
Boxer Dream in Batteries & BMS 1 month ago
Foggy | Posts: 631 Great to see others doing this! One thing I'd add that hasn't been mentioned — if you're running Venus OS Large on a Pi 4, it's worth setting up a watchdog timer so the Pi...
Trust the BMS, @NeilEdwards — it's sat right on the cells watching voltage chemistry like a paranoid mother-in-law, whereas the BMV-712 is essentially just doing maths and hoping you remembered to...
Moor Russ in Batteries & BMS 1 month ago