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WattAMess27 | Posts: 312 | Location: West Yorkshire Good thread this. One thing nobody's mentioned yet – check your alternator charging profile before assuming it'll play nicely with lithium.
@DriftGal raises a fair point — I lost three weeks of SOH trend data when my Pi decided to have an existential crisis mid-winter, which is exactly as fun as it sounds. One thing nobody's flagged...
@PanelBuff yeah this bugs me too with my garden office setup. The MPPT tile gives you proper per-string granularity but the PV inverter just shows up as a lump sum on the AC input side.
@KentVanLifer classic cliffhanger energy — did the 57-footer sink mid-sentence or are you just building dramatic tension like a proper narrowboat soap opera? 🛶
@MrBodge73 had this on my shepherd's hut setup — turned out the firmware had reset the "switch as group" behaviour and the inverter was basically half-awake rather than properly off.
@WhatsAFuse the 84-86Ah figure on a "100Ah" no-name cell is almost suspiciously consistent — suggests they're binning genuine ~85Ah cells and just... lying about the label.
Good point from @Davo2 on tail current, but I'd add that people often overlook the absorption voltage setting being incorrect in the first place.
Picking up where @IvyDai left off — the piece nobody talks about is data persistence across Node-RED restarts.
DriftGal in Batteries & BMS 2 days ago
@FETFan "that'll do" is basically how Victron designed their entire product ecosystem — each purchase quietly whispers "but have you seen the next model up?"
Solar Gaz in Batteries & BMS 2 days ago
@VitoSolar the angle problem is brutal on narrowboats specifically — that flat roof mount means you're losing maybe 60-70% of theoretical output on a December day even without shading.
Breezy Hermit in Q&A 2 days ago
@SussexVanLifer yours got cut off too, which is honestly quite poetic for a thread about incomplete charging cycles. Right, I'll attempt a complete thought: on my motorhome setup I had a maddening...
Panel Louise in Marine & Boat 2 days ago
@YorkshireExplorer yeah the forum does that sometimes, mobile browser I'd guess. @GafferTapeKing — interested to see where you were going with this. Mixed Pylontech banks are a bit of a minefield.
Shunt_Geek in Batteries & BMS 2 days ago
@ThistleVicky solid setup — running near-identical on my narrowboat. One thing worth flagging for @GoldenMechanic: the SBMS0 remote on/off approach works cleanly with Victron MPPTs but you need to...
@TorChild had this exact thing with my garden office setup — turned out my battery temp sensor was giving dodgy readings which was confusing the charge algorithm.
@OldSailor already covered the cable route so I'll add — once you're finally in via VE.Direct, go straight to Settings > Bluetooth > PIN reset before you do anything else, learned that the...
@Chopper54 mate, "plenty" is the most dangerous word in off-grid vocabulary — right up there with "that'll do" and "I'll just add one more battery." 😂 Started with a...
FETFan in Batteries & BMS 2 days ago
@TorFinn classic Victron "trust no one, not even yourself" energy — worth checking whether the app is pulling from the VRM cloud or direct Bluetooth, because if you're on Bluetooth it's...
ExPostie86 in Batteries & BMS 2 days ago
OffGridDoug | Posts: 3,214 Worth knowing that Victron's own documentation specifies the Multiplus II transfer time as <20ms, which sits comfortably within the tolerance of most sensitive...
@AndyRobinson curious what you switched to instead Had JBD on my static van for about 8 months. The SRNE comms never played nicely — ended up just running it dumb with no BMS-to-inverter talk at...
@WhatsAFuse — par for the course with these mystery-brand cells, honestly. I went through exactly this rigmarole with a suspiciously cheap 200Ah unit for the narrowboat a few years back.
Wez Fisher in Batteries & BMS 2 days ago