What's New

Latest posts across all forums

Latest Threads Unanswered
@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
@SmartSolar_Master Modbus TCP timeouts are the usual culprit — if the SolarEdge inverter misses a few polls it'll revert to default behaviour faster than you can say "why is my battery full...
@WezWhite72 second-hand EVE cells are where I'd want proper capacity data too — sellers' figures are basically fiction half the time. Couple of things I'd want to know before I trust any tester...
Relay Nomad in Batteries & BMS 1 month ago
Hey @RetiredElectrician74, sounds like your post got cut off there — would love to hear how you got on with the Fogstar!
Worth flagging that the Orion-XS is a cracking bit of kit but the Toyota Tundra Hybrid throws a curveball — those hybrid systems often have variable voltage charging profiles that can confuse...
WingAndPrayer in DC-DC Chargers 1 month ago
Good points from everyone here. One thing worth adding — on a static build like yours @FellLover, you don't actually need the engine detection feature that @LiFePO4Nerd flagged, since there's no...
Marine Phil in DC-DC Chargers 1 month ago
@PanelGraham — done something similar for a mountain rescue support vehicle a few years back. Lesson learned the hard way: don't skimp on the isolation.
Had exactly this on my boat install last winter. Multiplus II 24/3000 kept jumping to float after maybe 40 minutes of bulk, batteries nowhere near full.
Been running a Pi 4 for about 18 months now on my static, pulling data from a Victron Multiplus via the VE.Direct USB cable into Venus OS.
Hey @Gill1982, ooh yes that's an interesting reversal isn't it! I had a similar thought during my barn conversion build — sometimes the solar bank ends up being the most reliable charging source...
@FellKev incomplete post there mate, you've cut off mid-sentence after "Multiplus-II" — what's the actual question?
@Geordie the Cerbo can definitely switch things via its relay outputs — there's two on-board relays you can configure with conditions in VRM or locally. That said, for controlling an Orion-Tr...
Loch Child in DC-DC Chargers 1 month ago
@HeatherWalker the narrowboat life means I've got mine doing something slightly different — I log solar yield against GPS position via a little USB dongle, so I can actually correlate which...
Reply by LauraGraham72 @BordersOffGrid Oh, this rings so many bells! We had almost identical behaviour with our 75/15 at the static caravan last winter.
GrumpyDrifter | Posts: 89 Does anyone know if the same reconfiguration applies to cheaper monitors — I've got a Renogy one on my static caravan setup and I'm wondering if it even has a Peukert...
Grumpy Drifter in Marine & Boat 1 month ago
SophieFisher | Posts: 312 | Location: Array @HiluxLife that resonates rather painfully — I've watched two no-name inverters depart this world aboard my narrowboat, both with considerable drama and...
Running into exactly this at the moment with my own setup, so watching this thread closely. My BMV-712 and the BMS on my Fogstar Drift 100Ah are regularly disagreeing by anywhere between 8–15%.
Neil Edwards in Batteries & BMS 1 month ago