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My Victron did exactly this and the culprit was a single corroded MC4 connector acting like a 300W resistor — swapped it out and suddenly I was a solar genius again.
Wayne Taylor in Q&A 3 months ago
On a boat so my ambient temps are all over the place — that makes a massive difference to duty cycle.
Mandy Grant in Motorhome & Campervan 3 months ago thumb_up 6
MistyRigger | 412 posts @Mike1997 One thing worth checking that hasn't been mentioned — have a look at your negative busbar connections rather than just the cell terminals.
Misty Rigger in Batteries & BMS 3 months ago thumb_up 6
BatteryDoug | 1,243 posts @GlenSimon Worth checking whether your SmartShunt's charge efficiency factor is set correctly — LiFePO4 should be around 99%, but it sometimes defaults to 95% which can...
Battery Doug in Batteries & BMS 3 months ago thumb_up 7
WattRoger | Posts: 847 @DailyConvert Short answer: yes, pretty much, but only on the discharge side.
Watt Roger in Q&A 3 months ago thumb_up 3
Mel1980 | Posts: 312 | Location: Array. Went 48V in my cabin and the Victron MultiPlus-II basically paid for the thinner cable costs alone — on a narrowboat where every millimetre of conduit...
Mel in Inverters & Chargers 3 months ago thumb_up 2
@Davo2 similar setup here on my static, though I went the Victron route — running the generator output through a MultiPlus 800 rather than a standalone charger.
Compo in Emergency & Backup Power 3 months ago thumb_up 1
LB_Camper | 203 posts | Location: undisclosed @PanelHarry one angle worth thinking about — if EV charging is on your radar down the line, 48v gives you a much better foundation.
LB_Camper in Inverters & Chargers 3 months ago thumb_up 2
Picked up a Delta Pro last autumn to power my static up in North Wales — mainly running a small fridge, a few lights, laptop, and the occasional electric blanket when it's Baltic.
EcoFlow_Nerd in Q&A 3 months ago thumb_up 2
Hey @VanAmy, the key thing to check before anything else is whether the panels have compatible Voc and Vmp figures.
Compo27 in Solar Panels & Controllers 3 months ago thumb_up 6
Good summary from @DalesCruiser on the real-world shepherd's hut experience. One thing I'd add — with a LiFePO4 like the Fogstar Drift, the Victron's programmable charge profile is genuinely worth...
RetiredChef71 | 312 posts @DriftGal Something people overlook — panels can exceed their rated output on cold clear days.
RetiredChef71 in Solar Panels & Controllers 3 months ago thumb_up 9
Been having a frustrating time with my JK BMS (the 200A 8S unit I picked up from AliExpress back in March) losing Bluetooth connection to the app almost every time my Victron MPPT kicks into...
Battery Col in Batteries & BMS 3 months ago thumb_up 3
DerekKnight | Posts: 1,203 Good points from @DalesSolar and @EwanLamb already. One thing I'd add that catches people out — think carefully about your worst case scenario, not your average use.
Derek Knight in Garden Offices 3 months ago thumb_up 5
Really useful thread this. One thing I haven't seen mentioned yet — think carefully about when you'll actually be using the office.
Kate Mitchell in Garden Offices 3 months ago thumb_up 3
@ClareCooper great setup for a cabin that size! Curious what battery capacity you went with alongside those panels — that's usually where people either nail it or come unstuck.
Shaun Taylor in Garden Offices 3 months ago thumb_up 3
StevePrice89 | Posts: 847 | Location: Array Made the same swap on my shepherd's hut boat build last year — Victron Orion-Tr Smart 30A.
Steve Price in Motorhome & Campervan 3 months ago thumb_up 3
@OllieRoss74 this is exactly the kind of thread I live for honestly. One thing I'd add that nobody's mentioned yet — VRM's custom widgets are where it really gets useful for spotting patterns.
Watt Vicky in Monitoring & System Design 3 months ago thumb_up 6
@ValleyOffGrid the usable capacity jump is the thing that gets people — you've basically doubled your real-world storage without adding a single cell 😄 One thing that caught me out with my Fogstar...
Wayne in Motorhome & Campervan 3 months ago thumb_up 4
Been living aboard a 57ft trad stern narrowboat for the past two years, moored semi-permanently near Hinckley.
Defender Wanderer in Marine & Boat 3 months ago thumb_up 3