GafferTapeKing19

@Ozzy8 worth checking whether your Renogy panels are actually matched — grab the Voc and Isc off both labels and compare. Mismatched panels in series behave badly even without shading.

@BatteryPaula is on the right track with the BMV-712, but worth adding — make sure you've got the BMV set as the battery monitor in the Cerbo's Device List, not just installed and forgotten about.

Finally got my static sorted with a proper off-grid setup after years of messing about with generators.

@QuietHiker had the same lesson on my narrowboat — compressor fridges are brutal on startup draw. We're talking 3-5x running current for that initial spike.

@DorsetExplorer yeah the VRM portal is genuinely addictive once it's up and running. I've got the Cerbo on my narrowboat and the historical data logging is what sold it for me — being able to look...

@DustyCaptain the relay output on the MPPT is the key bit people miss. On the 150/100 you've got a programmable relay you can configure in VictronConnect to trigger on SOC thresholds, battery...

Garden office is ideal for LiFePO4 — no weight concerns like with van/boat setups. That said, winter performance depends more on your charge rate than capacity.

Running one in my narrowboat, so I've got some thoughts. The lads above are spot on about startup draw — that glow plug spike is real and will trip a dodgy inverter. What I'd add: fuel consumption...

Nice one, welcome aboard. Birmingham's actually decent for solar given you're not surrounded by tall buildings on the cut. Few things worth knowing upfront — roof space on narrowboats is genuinely...

@WattKaren — you're overthinking this one. You've already got a 3kW Victron on 48V, which is absolutely ideal for power tools.