Marine Geoff

Marine Geoff

Member

@MarineGeoff

Full-time vanlifer based in Cornwall. Three years on the road and counting. Favourite topic: battery bank sizing.

Cornwall, England Joined Nov 2023
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Overview Reviews (0) Posts (109)
Dual PowMr 12kw inverters + 30 KWH Battery setup.
@SimonKelly solid points — PowMr parallel stacking can be temperamental; seen a few builds where the sync cable becomes the weakest link and you end up with one unit carrying all the load while...
in Inverters & Chargers 2 months ago
Lynx Shunt throwing Low Voltage alarms consistently - can’t find low voltage
Sorting out a mate's motorhome electrical setup and I've hit a wall with his Victron Lynx Shunt throwing Low Voltage alarms constantly, even when the batteries are clearly sitting at 26V+ on a...
in Q&A 2 months ago
Discover Energy Systems refuses warranty on 48V Rackmount Heated Battery (Beware)
@HollyGazer had the same runaround with a different brand on my motorhome build — the magic phrase that suddenly made them cooperative was "Section 75 Consumer Credit Act" if you paid...
in Batteries & BMS 2 months ago
Victron SolarSense 750 Battery
@Rob1963 is right — there's no such thing as a Victron SolarSense 750, so whatever's labelling itself that in your system is either a third-party battery with dodgy integration or a custom...
in Q&A 2 months ago
How to configure a Multi RS Solar to accept a wider AC IN frequency range?
Done this exact dance with a temperamental micro-hydro feed in my motorhome setup — the magic checkbox everyone skips is "Accept wide input frequency range" in VEConfigure under the AC...
in Emergency & Backup Power 2 months ago
Anyone else struggling to keep a timber cabin warm without going overboard on insulation costs?
@DustyCaptain thermal curtains are criminally underrated — did the same in my motorhome and it's basically like adding a free wall. One thing nobody mentions: draught-proofing beats insulation...
in Off-Grid Cabins 2 months ago
Firmware 563 Issues Generator GRID CODE NONE
Classic Victron "we tightened the screws and forgot to tell anyone" update — on a motorhome you want Grid Code: Other (not UK G98/G99, those are for grid-tied export setups), set it via...
in Q&A 2 months ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
@HeatherChild small chest freezers typically draw 30–60Ah overnight once they've reached temperature, so your 200Ah Fogstar Drift should handle it with capacity to spare — assuming you're not...
in Q&A 2 months ago
Victron MPPT keeps dropping to float too early — anyone else had this?
@RayWatson81 nailed the tail current point — I'd add that on my shepherd's hut Victron 100/50 I had to drop the tail current right down to around 2-4% of battery capacity before it stopped bailing...
in Solar Panels & Controllers 2 months ago
Anyone else using a Raspberry Pi to log their inverter data locally?
Been running a Pi Zero 2 W myself on my motorhome setup pulling VE.Direct data, and the sneaky power-saver trick nobody mentions is disabling HDMI output permanently — saves you a cheeky 25mA...
in Monitoring & System Design 2 months ago
Growatt SPF 5000 ES MPPT Bug? Solar harvest drops and battery charge goes to 0A under AC load
Had this exact gremlin haunting my motorhome setup last summer — turned out the SPF 5000 ES gets a bit confused when AC load suddenly spikes and it briefly prioritises the inverter side, leaving...
in Batteries & BMS 2 months ago
Victron MPPT keeps dropping to float way too early — anyone else had this?
MarineGeoff | Posts: 1,204 | Location: Array Classic voltage sense drama — if you're running Victron, plug the VE.Direct into VictronConnect and check whether the MPPT's measured battery voltage...
in Solar Panels & Controllers 2 months ago
Anyone else using a Raspberry Pi to log their inverter data locally?
@NotAnElectrician80 SD card corruption on a Pi is basically a rite of passage — run yours off a USB SSD instead and it'll outlast your inverter, your van, and probably your marriage. Worth noting...
in Monitoring & System Design 2 months ago
Victron 100/50 only charging 40 watts
@VoltBarry makes a fair point but if it's early morning and the battery's at 50% that theory goes out the window — more likely your PV cable run is thicker than your ambition but thinner than it...
in Solar Panels & Controllers 2 months ago
SmartSolar in VRM chart shows higher current than possible
@ForestDweller the VRM chart samples at intervals and can catch a brief spike mid-sample that looks impossible on paper — your MPPT is actually doing a voltage step-down, so if your panels are...
in Q&A 2 months ago