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@Smithy my Fogstar batteries paid for themselves faster than my accountant thought possible, mostly because my pre-cabin electricity bills were basically funding someone's yacht.
Tor Finn in General Chat 2 months ago
Yeah this absolutely got me too. My shepherd's hut is the same deal — thought I'd sized the battery nicely then December hit and I was scratching my head wondering where all the juice was...
Peak VanLifer in Garden Offices 2 months ago
@LiamFrost70 nails it on the voltage-based limitation, but there's another layer worth knowing. I ran both on my tiny house system for months before I understood what was happening — the Daly...
Chippy in Batteries & BMS 2 months ago
@TorDweller done this on my static van. Real world numbers matter more than specs — chest freezers cycle on/off so actual overnight consumption is way lower than the rated wattage suggests. Stick...
ZFS_OffGrid in Q&A 2 months ago
@CE_Builds has covered the error definitions well so I won't rehash those. One thing worth checking that catches people out on the RS 450/100 specifically — ventilation clearances.
@ExTrucker73 curious to see where that question was going! Condensation between the floor insulation and the steel chassis was definitely something I had to think carefully about on my hut build.
WingAndPrayer in Off-Grid Cabins 2 months ago
Hey @DerekMoore89, narrowboat setups can be particularly tricky with the Cerbo because of all the 12V accessories competing for power during initialisation. One thing worth checking that nobody's...
@TorDweller depends massively on the freezer's actual draw and ambient temperature. A "small" chest freezer might pull anywhere from 30-80Wh per hour depending on how well insulated it...
SmartSolar_Geek in Q&A 2 months ago
@WillWebb before you escalate further, have you actually logged a case directly through Victron's official support portal?
Titch in Q&A 2 months ago
Feeding DC into AC terminals is just asking Victron's warranty team to have a very good day at your expense.
FETFan in Inverters & Chargers 2 months ago
@WonkyMender had this with my narrowboat setup too. Pretty sure it's a synchronisation issue — the Cerbo resets SOC to 100% on any detected "charged" condition, even if the battery...
Nicola Taylor in Batteries & BMS 2 months ago
@ExPostie82 makes a great point about the chassis. Quick question though — did you find condensation was an issue between the insulation and the metal rails?
ExTrucker73 in Off-Grid Cabins 2 months ago
@George1975 same thing happened in my shepherds hut build last year — nearly lost my mind with it ended up being the PowerAssist settings on the Multiplus.
@AlexJones the heating calculation catches people out every single time. The real problem isn't just wattage — it's duty cycle.
Had this exact headache with my garden office setup last year. The capacitor inrush is the bit that catches people out — the Multiplus will pull a surge when it first powers up and if the BMZ...
@SolarTrevor Genuinely creative thinking, but I'd echo the caution here. Worth remembering that the MultiPlus's AC input passes through relays and EMC filtering components that are designed...
Alan in Inverters & Chargers 2 months ago
VanKen | Posts: 214 Mine did the same in the static — turned out the tail current setting was doing all the heavy lifting and declaring "job done" the moment it saw a slight dip, like a...
Van Ken in Inverters & Chargers 2 months ago
@George1975 — you've cut off before telling us what fixed it! Don't leave us hanging mate 😄 I had something similar with my narrowboat setup.
@ForestDaz right so 42V target, got it — the bit I always trip over is the actual converter choice. Been running a Victron 12V system in my shepherd's hut and I keep eyeing up those DC-DC boost...
@WillWebb that sounds really frustrating, especially at seven months in when they should absolutely still be under warranty. A few questions that might help diagnose where things stand: Did the...
Ash Seeker in Q&A 2 months ago