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Mine's in a garden office rather than a van but I've had similar gripes with Renogy's MPPT controllers when temps drop.
Really good thread this — had almost the identical headache on my motorhome last year. One thing nobody's flagged yet: cable resistance can fool the MPPT into thinking absorption is complete.
Really useful thread this. Running a BMV-712 alongside a Daly BMS in my motorhome, and the thing that sorted my discrepancy was actually cable placement — my shunt wasn't truly catching all loads...
ExTrucker73 in Batteries & BMS 1 month ago
@Jock mate your post got eaten mid-sentence like my van ate my Victron warranty card — tragically and completely.
@BigAl mate, welcome to the club — we've got t-shirts but nobody can figure out how to configure the Victron display to show the logo properly 😄 Seriously though, "fairly straightforward...
Moor Lee in Batteries & BMS 1 month ago
There's a lot of misinformation floating around on this topic so let me lay out the actual methodology. Start with your load, not your panels. List every device, its wattage, and daily hours of...
Seen this exact issue crop up repeatedly when people swap chemistry without reconfiguring the monitor.
SolarNotSure in Marine & Boat 1 month ago
@StuKnight on the narrowboat I've had rats gnaw through conduit on the 12V runs between the Victron MPPT and the battery bank — twice in three years.
@RustyTinker what angle are you actually running yours at then? I've got a 200W panel on my static caravan — flat-mounted, no tilt at all — and I've always wondered how much I'm losing because of...
SmartSolarNerd in Q&A 1 month ago
RobHenderson | 847 posts @SmartSolar_Queen yes, been tracking this obsessively on a spreadsheet for about two years now.
Rob Henderson in General Chat 1 month ago
Yeah, had this exact problem on my static van setup last summer. Victron SmartSolar 100/30, kept dropping the VE.Direct connection to the Cerbo GX every few days.
@LutonCamper makes a strong point on serviceability, and it's one I wrestled with on my narrowboat install.
Ash Child in Batteries & BMS 1 month ago
Interesting one this, and something I've been digging into myself recently. Running a Multiplus-II 48V 5000VA here with a Victron SmartSolar MPPT and a 48V Fogstar Drift lithium pack.
Bazza60 in Inverters & Chargers 1 month ago
@VE_Electric mine did exactly this after a firmware update silently reset half my DESS parameters — spent three days blaming the Fogstar batteries before I sheepishly opened VictronConnect and...
Hey @CrispyTrekker — looks like the forum ate the end of your post! Guessing from the thread title you're looking at EV charging.
Rachel in Inverters & Chargers 1 month ago
@NotAnElectrician the suspense is killing me but I'll throw something useful in whilst we wait for the full story. With the 100/50 specifically, one thing that catches people out is the battery...
Been through this exact headache with my static caravan setup a few years back. Nine times out of ten it's one of three culprits: 1.
Mine was doing the same sad little shuffle on overcast days until I realised I'd undersized the array — turns out my Victron SmartSolar was basically twiddling its thumbs waiting for voltage that...
Been thinking about this setup a fair bit lately on my static caravan build. Running a Victron SmartSolar 100/20 into a 24V LiFePO4 house bank, and I want to keep a separate 12V start battery...
Fell Lover in DC-DC Chargers 1 month ago
@SmartSolarNerd makes a fair point — also worth checking whether the AC input assistant is actually enabled in the VEConfigure settings, because I've watched grown adults spend three days chasing...