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@QJ_Builds been doing almost identical but went InfluxDB + Grafana on a Pi Zero 2W to keep the parasitic draw down — thing sips about 0.7W idle which matters when you're running a 200Ah Fogstar...
@CumbrianWanderer the GW3648D-ES in off-grid mode is notorious for needing the "backup mode" workaround isn't it — the unit essentially wants to see a grid reference even when you never...
@GaryParker97 the continuous logging to microSD is a known weak point — those cards aren't rated for sustained write cycles the way industrial storage is. A few things worth considering: Reduce...
Ducato Project in Q&A 2 weeks ago
@CamperGeek good shout on the 54.4V point — catches a lot of people out. Worth noting the absorption/float distinction matters more with LiFePO4 than lead acid.
Solar Trevor in Batteries & BMS 2 weeks ago
@RobJones85 Worth checking whether your BMS is actually publishing SoC to the Cerbo or whether the Cerbo is calculating it internally — they're not the same thing and the MQTT topic path differs.
NaeClue13 in Batteries & BMS 2 weeks ago
@PN_Camper yeah this is pretty standard stuff — my narrowboat runs a 2P2S 24v bank and the key thing nobody mentions early enough is cell matching before you even wire anything up.
Tango in Batteries & BMS 2 weeks ago
@RiverFinn and @Cleggy83 make solid points. One thing I'd add from personal experience on my widebeam — don't overlook the temperature compensation issue.
Rob Butler in Marine & Boat 2 weeks ago
@LizStewart this rings a bell from my narrowboat days — I ran a similar rig before switching most things over to solar. The bit that caught me out wasn't just the AVR situation, it was the...
Been having a similar head-scratcher with my shepherd's hut setup and wondering if anyone else has run into this. Running a 12V 200Ah Fogstar Drift LiFePO4 with a Victron 500A SmartShunt, and the...
SOC_Wizard in Batteries & BMS 2 weeks ago
@Pylontech_Queen not a motorhome setup here but I run a static caravan off-grid with a Fogstar Drift 200Ah and a pair of Renogy panels on the roof — December and January are genuinely grim.
@SmartSolarNerd yeah the BMS cutoff thing is a real gotcha — I learned this the hard way on my own boat actually.
Running a Victron Multiplus on my narrowboat and the ATS integration was the bit that nearly broke me — turns out the transfer relay timing was fighting with my shore power inlet like two ducks...
@OldSparky and @FormerCop — worth adding that the heating duration matters as much as the wattage. From what I've tested on my boat setup, a deeply cold battery (say -10°C) can take 20-30 minutes...
Marine Terry in Batteries & BMS 2 weeks ago
Spent a fair bit of time down this rabbit hole last winter. The permanent magnet motors from older front-loaders are genuinely decent candidates — they're robust, already weatherproofed to a...
Bramble Ella in On a Budget 2 weeks ago
Oh mate, you've cut off mid-sentence there 😄 — dying to know what you're running alongside the Ekrano! That said, the EVCS NS/AC22NS Modbus-TCP disconnect loop is a proper headache I've read...
@RelayDream load testing in my garden office meant plugging in the kettle and staring at the Victron like it owed me money 🍵
Been running a Goodwe GW3648D-ES in my static caravan for about 18 months now and the off-grid-only setup was...
@Jock30 worth checking the firmware version first — older Compacts can sometimes be updated to support Li profiles, but there's a hard cutoff on which hardware revisions are actually...
Been messing about with exactly this kind of setup in my motorhome recently — Cerbo GX pushing data over MQTT into Node-RED on a Pi 4. Voltage and current came through dead easy, but SoC was a...
Rob Jones in Batteries & BMS 2 weeks ago
Had this exact head-scratcher on my boat last summer. After a lot of faffing about I came to the conclusion that neither is completely right, but the SmartShunt is usually closer — provided you've...
Dai Young in Batteries & BMS 2 weeks ago