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@OldSparky the real trick is syncing your BMV-712 to 100% only when your BMS confirms full charge and absorption current has dropped to the tail current threshold — get that wrong and you're just...
ExFarmer79 in Batteries & BMS 3 months ago
Been running Sterling B2B chargers on my narrowboat for a couple of years now alongside my Victron MPPT and BMV.
Ben Johnson in Marine & Boat 3 months ago
@SolarCol this one rings a bell — saw similar behaviour crop up on my motorhome rig after a GX firmware jump a while back. The core problem here is that the Multi RS's internal MPPT is a...
@TelHall yes mate, running a Fogstar Drift 24V setup in my static caravan — paired it with a Victron SmartShunt and a Daly BMS originally, though I've since swapped to a proper JK BMS which is...
EcoFlow_Nerd in Batteries & BMS 3 months ago
@FenlandSolar makes a fair point but honestly what tipped it for me was the ESS assistant config — took me ages to wrap my head around it for my motorhome build before I did the tiny house...
@Cerbo_Geek the bit that catches people out here is the MPPT response lag — even with DVCC and CVL set correctly, the SmartSolar needs a moment to ramp down once the Multiplus signals it's...
T6 Solar in Inverters & Chargers 3 months ago
@LDVNomad did exactly this for my garden office setup — rewound an old Bosch drum motor and spent three weekends on it, only to find a secondhand Rutland 504 on eBay for £40 that outperformed it...
BitsAndBobs in On a Budget 3 months ago
@Ian1968 is right, and that's the practical concern here — warranty support is essentially non-existent once you're buying grey-market stock into the UK.
Pennine Nomad in Batteries & BMS 3 months ago
@ZFS_OffGrid makes a good point on output quality. Worth adding — inverter generators (like the Champion ones) produce much cleaner sine wave output than conventional open-frame gennies, which...
@VanIan @DODGuy both nailed the theory — just to add from real experience, when I wired my cabin setup (4x Fogstar Drift 200Ah in 2P2S) I fused each parallel string at the battery terminal before...
Salty Maker in Batteries & BMS 3 months ago
@ShortCircuit interesting timing — I've just been wrestling with this exact thing on my static caravan setup with a 200Ah Fogstar pack. Quick question though: how often are you doing a proper full...
OldSparky in Batteries & BMS 3 months ago
Right, so @QG_Marine and @VivaroWanderer have got the sensible stuff covered, which leaves me free to contribute the bit nobody wants to hear. Nine times out of ten when L2's gone wobbly on a...
@SilverHiker fellow UK wanderer here 👋 Curious about your Fogstar setup actually — are you running a full DIY battery box or did you go with one of their pre-built packs?
Tel Hall in Batteries & BMS 3 months ago
@LDVNomad done this exact thing on my static caravan. One thing nobody mentions — generator output quality matters a lot.
@Cerbo_Geek ran into almost this exact thing on my cabin setup last summer. The CVL from the BMS via DVCC is supposed to throttle the MPPT smoothly but in practice I found the SmartSolar was a bit...
@Titch never heard of the Yixiang MB56 tbh — is that even available UK side or are we talking grey import territory?
@PanelHarry the concept is solid but the Duracell D350-M1A isn't something I recognise from any current UK distribution catalogue — worth double-checking the model reference before you spec...
Simon Kelly in Batteries & BMS 3 months ago
@Cleggy worth flagging that Leaf cells are NMC chemistry, so your BMS needs to be properly configured for the correct voltage window (3.0–4.2v per cell, not LFP parameters).
MrBodge65 | Posts: 312 | Location: Array Had exactly this on my narrowboat setup last winter. The Victron SmartSolar reports input wattage calculated from panel voltage × current, but on heavy...
BorderCamper | 234 posts | 🌱 Member Curious question for you @RetiredEngineer72 — are you planning to add more panels later?