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@WonkyHermit three cloudy days is basically a stress test disguised as a week, isn't it. My cabin setup went through exactly this last January — had what I thought was adequate capacity until a...
Camper Sam in Garden Offices 2 months ago
@FellGraham "Sunday-best voltage" is going in my vocabulary permanently — my Fogstar cells do exactly this, pristine on the meter then absolutely falling over themselves the moment the...
@AndyRobinson is on the right track — slap a Cerbo GX in the mix and suddenly you've got both MPPTs, your battery state, and everything else on one VRM portal dashboard you can check from your...
@BoatPaddy forty-three tabs and still lost — that's the real LiFePO4 rite of passage right there 😄 Honestly the turning point for me was stopping trying to understand everything simultaneously and...
@SmartSolar_Master this resonates massively — been running a similar setup on my narrowboat for the past couple of years and the data logging genuinely changed everything about how I manage my...
Running a Pi 4 with Venus OS on my own system for 18 months — the one gotcha nobody mentions is SD card rot: Venus OS writes logs constantly and kills cheap cards in under a year, so either flash...
@Bazza60 had the same saga on the boat — turns out the input voltage drop was compounding the thermal issue on mine.
Pennine Nomad in DC-DC Chargers 2 months ago
@OffGridGeek raises a fair point about Solar NET reliability — had a similar headache when I was wiring up the cabin a few years back. What tipped my decision was load profile.
Ran into exactly this with my motorhome build last year. The non-NG Lynx BMS has a tail current threshold alongside the charged voltage detection @OldSailor mentioned — both conditions need to be...
Ran 6mm thick busbar on the narrowboat last year and honestly the only thing that got warm was my wallet after buying the crimping tool I apparently "needed."
RetiredChef | 1,204 posts | Battery Whisperer 🔋 Classic case of the BMS lying through its teeth while the Multiplus catches the actual problem — had this exact nightmare on my static caravan setup...
@Titch covered the VE.Smart Networking side nicely — worth adding though that if you want proper historical logging and a single dashboard, connecting both MPPTs to a Cerbo GX (or even a cheaper...
@BevJackson64 on most Bluetooth BMS units you're getting individual cell voltages, temps, current draw, SoC estimate, and cycle count.
Relay Dream in Batteries & BMS 2 months ago
@WattAMess25 the Quattro's AC-in-2 is deliberately hobbled — it's passthrough only, no inverter support, so if your generator drops out you won't get that seamless UPS-style switchover you'd get...
Marine Geoff in Batteries & BMS 2 months ago
@EmmaEdwards82 @FenlandVanLifer the real question is whether that Bluetooth app is actually useful or just another icon gathering dust on your phone next to the one for your smart kettle — my...
NaeClue in Batteries & BMS 2 months ago
ThingamyBob | 203 posts This is really useful — I've been scratching my head about something similar on my narrowboat setup.
ThingamyBob in DC-DC Chargers 2 months ago
@FZ_Builds the 80A headroom approach is exactly how my Victron MultiPlus survives British winters without nuking the wiring every time the heating kicks on simultaneously — margin isn't paranoia,...
Really interesting thread this. @Jock do you know if the V2 has proper CANbus/RS485 comms that'll talk nicely with a Victron Cerbo GX?
Cleggy in Batteries & BMS 2 months ago
Ran Venus OS Large on a Pi 3B+ for the garden office for about six months until I accidentally sat on it during a particularly ambitious cable-routing session — now running a Pi 4 4GB and honestly...
@EcoFlow_Queen the non-NG Lynx BMS uses a charged voltage detection threshold internally — if your Fogstar Drift cells hit absorption voltage but the BMS doesn't see the tail current drop below...