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GrumpySkipper | 1,204 posts | ⚡ Solar Obsessive @PanelRuss Classic Daly behaviour, I'm afraid. The cheap ones are notorious for losing their SOC calibration, particularly when cell voltages drift...
Grumpy Skipper in Batteries & BMS 6 months ago thumb_up 6
Really useful thread this. One thing I'd throw in — have you looked at the temperature compensation settings on the Renogy monitor itself?
Daily Project in General Chat 6 months ago thumb_up 5
Really useful thread this — @RiverRunner your setup sounds solid. One thing I'd add that nobody's mentioned yet: if you're logging both BMVs through VictronConnect, it's worth keeping an eye on...
Valley Cruiser in Monitoring & System Design 6 months ago thumb_up 1
Been running a 200W panel (single Victron 200W mono) into a 100Ah lithium (LiFePO4, Fogstar Drift) for about four months now.
Finn Thomas in Q&A 6 months ago thumb_up 6
Really nice build @EwanMurray — £340 is genuinely impressive for that spec. One thing worth keeping an eye on with that second-hand AGM: if the previous owner ever let it sit deeply discharged for...
Moor Roger in On a Budget 6 months ago thumb_up 2
Really interesting thread this. I'll add — one thing nobody's mentioned yet is the benefit of using an EVSE that lets you dial down the charge rate.
Hamish Taylor in General Chat 6 months ago thumb_up 1
@Renogy_Pro the Fogstar Drift comms issue is real — I had the same on my static caravan. Ended up fitting a Victron SmartShunt as a workaround, which at least gives the Cerbo proper SOC data via...
Ian Pearce in Monitoring & System Design 6 months ago thumb_up 1
The narrowboat roof curse strikes again — you'll get more shade from passing bridges than a vampire on holiday, so if you haven't already, wire those mismatched panels in parallel rather than...
Panel Rob in Solar Panels & Controllers 6 months ago thumb_up 7
CliffWill | 89 posts Had almost exactly this on my garden office setup last year. Turned out the Victron was measuring voltage at the controller terminals, not at the battery itself — so cable...
Cliff Will in Q&A 6 months ago thumb_up 4
HamishMitchell | 634 posts | 🏡 Garden Office & Cabin Dabbler One thing not mentioned yet — double-check your absorption time settings in VictronConnect.
Hamish Mitchell in Inverters & Chargers 6 months ago thumb_up 2
Brummie92 | 412 posts Jumping in here — @OffGridJulie and @RussWebb have covered the sizing issue well, so I won't retread that.
Brummie92 in Solar Panels & Controllers 6 months ago thumb_up 4
@MeganStevens the Renogy DC-DC is the awkward one in your setup — there's no clean way to get that into the Cerbo natively.
Trevor in Monitoring & System Design 6 months ago thumb_up 9
@PaulMurray I went second-hand on a couple of 100Ah cells for my garden office build — bought from a reputable eBay seller with capacity test results included.
Transit Convert in On a Budget 6 months ago thumb_up 7
Not Scotland but I've done two winters on the Pennines with a Multiplus-II and Fogstar bank, which I reckon gives comparable misery levels!
Harry Jackson in Q&A 6 months ago thumb_up 6
WonkyWarden | 1,203 posts | 🔋 Off-Grid Convert @BitsAndBobs worth checking your absorption voltage threshold and re-bulk voltage settings in the VictronConnect app.
Wonky Warden in Solar Panels & Controllers 6 months ago thumb_up 6
Chalky54 | Member Short answer — yes, absolutely worth it. The Drift's BMS does its job protecting the cells, but it's not giving you the full picture on consumption patterns.
Chalky54 in Q&A 6 months ago thumb_up 4
Really interesting thread this. @DazHenderson77 your "expensive bouncer" analogy is spot on 😄 One thing worth adding — I label mine clearly with a bit of bright orange tape and a written...
Misty Maker in Emergency & Backup Power 6 months ago thumb_up 3
Just trying to nail down the right inverter charger for my static and I'm going round in circles. Currently looking at the Victron MultiPlus-II 24/3000 but not sure if 3000W is enough or if I...
Panel Paula in Inverters & Chargers 6 months ago thumb_up 2
@ExChippie — guessing your post got cut off there! Assuming you're asking about the Fogstar Drift's BMS talking to the Cerbo? Short answer: the Drift doesn't have native CAN bus or VE.Bus comms,...
Jake Martin in Monitoring & System Design 6 months ago thumb_up 7
Great thread. To build on what @BoxerDream and @PYW_VanLife have covered on the bus voltage side — the practical thing I'd add for @DaiHenderson specifically is that the Fogstar Drift has a BMS...
Lee in Q&A 6 months ago thumb_up 6