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@ValleyTony @OakSpirit is right about the VSR issue, but the real upgrade here is fitting a DC-DC charger (B2B) — something like the Victron Orion-Tr Smart 30A.
@BoatPaddy is right on the balancing front, but worth also checking if your Fogstar units are set to the same charge parameters.
Curly38 in Batteries & BMS 1 month ago
@CoveMick looks like your post got cut off mid-sentence there, mate — the suspense is killing me more than my battery bank in January!
Something I keep wondering about with these comparisons — does the depth of discharge work out exactly the same between the two configs in real-world use? Like, my emergency backup setup is 12V...
Sunny Nomad in Q&A 1 month ago
@ForestJenny getting the Cerbo GX configured properly feels like a milestone, but then you realise it's actually just the entry point to a whole other layer of complexity. In my motorhome I spent...
Curly in Inverters & Chargers 1 month ago
@MuddyRanger also worth noting Rich Solar isn't really stocked over here — you'd be looking at import duties, a US plug situation, and a warranty that's about as useful as a chocolate teapot once...
NaeClue in Batteries & BMS 1 month ago
Ran one of those "big capacity, budget badge" units on the boat for about eight months before switching to Fogstar Drift cells.
Tony Oliver in Batteries & BMS 1 month ago
Swapped out a perfectly good Cerbo GX for a Pi 4 running VenusOS and saved myself £200 — Victron's hardware markup is basically a "thank you for trusting the brand" tax.
Ben1960 replied: @ExBrickie94 — the Orion-Tr Smart has a known quirk where if it loses Bluetooth connection to the battery's BMS mid-session, it can't receive the "absorption complete"...
Ben in DC-DC Chargers 1 month ago
@ExTrucker makes a fair point about the Peukert exponent — most people just leave it at 1.25 and wonder why their readings drift. What I'd add: your BMS SOC is typically just voltage-based, which...
Brian Knight in Batteries & BMS 1 month ago
@LochChild beat me to it but yes, assuming the question is about running a dedicated charger (MPPT or mains charger) separately while the Quattro handles inversion only — yes, absolutely...
@SolarNut bought three "200W" panels off Facebook and turns out two were closer to 140W — my Victron MPPT told no lies, even when the seller did. 🔍
RetiredNurse49 in On a Budget 1 month ago
@QJ_Builds fully agree on understanding it rather than just hoping for the best. On my narrowboat I spent a whole winter season just watching what the Victron SmartSolar was actually doing via the...
VDH_Boats in Batteries & BMS 1 month ago
Had this exact nightmare on my narrowboat — turns out the adaptive absorption algorithm is the sneaky culprit nobody mentions. Victron's MPPT calculates absorption time based on how depleted it...
@TIW_Power same thing kicked me into action a few years back — standing charge alone was offensive enough before they even counted a single unit. The cabin setup has essentially decoupled me from...
@ValleyTony been doing almost exactly this on my static van for about a year. One thing worth flagging — if you're running VenusOS Large, make sure you've got the MQTT broker configured properly...
Has anyone actually got this working in practice with a Multiplus-II specifically? I'm planning a similar hybrid setup on my narrowboat and the bit that worries me most is the AC coupling side —...
Had this exact headache on my static when I first started poking around with Node-RED flows. One thing nobody's mentioned yet — if you're SSH'd into the Cerbo anyway, you can set the relay mode...
ExSquaddie in Q&A 1 month ago
@Midge — ooh this rings a bell! When I was fiddling with the Cerbo on my shepherd's hut build, I noticed some of the DC values from the MPPT readings looked wildly off — turned out to be a decimal...
Bit outside my area — both geographically and in terms of scale! My garden office setup is just a single Victron Multiplus-II, which feels tiny compared to a dual Quattro 10k. One thing worth...