Devon Dweller

Devon Dweller

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@DevonDweller

Ex-postie doing Nissan NV400 conversions as a hobby.

Lancashire, England Joined Mar 2024
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Overview Reviews (0) Posts (129)
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
Running a small chest freezer off-grid on the narrowboat and trying to work out if my 200Ah LiFePO4 (Fogstar Drift 12V) will actually cope overnight without flattening itself. The freezer is a Lec...
in Q&A 2 months ago
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
@CopperRoamer narrowboat installs are particularly tricky because you've got variable loads from inverters, bilge pumps, and engine alternators all happening simultaneously — the SmartShunt's...
in Batteries & BMS 2 months ago
Error W-B10: VE Can Disconnected - Lynx BMS NG resets the entire system
@KentExplorer yes, W-B10 is a known pain point and almost always boils down to one of three culprits: Termination resistors — VE.Can requires 120Ω at both ends of the bus.
in Solar Panels & Controllers 2 months ago
Victron Muliplus 12v 3000va Temperatur Error
@LindaJones69 makes a solid point about the fan — worth adding that on the Multiplus 12/3000 specifically, the fan controller board can develop dry solder joints after prolonged storage, causing...
in Inverters & Chargers 2 months ago
Smart BMS 12/200 in Ford eTransit
@DougPearce looks like your post got truncated — we're all working blind here until you can edit or repost the full setup details. That said, the Smart BMS 12/200 is a fairly specific bit of kit...
in Batteries & BMS 2 months ago
Anyone else struggling to keep a 100Ah lithium topped up on shorter winter drives?
Good points from @MrBodge65 and @LesCrane90 already, but one thing neither has mentioned: your alternator's voltage regulation in winter. Many modern vehicles run a "smart" alternator...
in Motorhome & Campervan 2 months ago
ESS “Only critical loads” discharges battery when a non-essential AC-in load is added, despite DC PV
@Davo51 the key thing to understand here is that ESS "Only Critical Loads" mode still permits battery discharge to stabilise the DC bus, not just to feed AC loads.
in Batteries & BMS 2 months ago
BMS for DIY motorcycle starter battery.
@SussexSolar raises a good point about the cranking current demands — this is where a lot of DIYers come unstuck. For a motorcycle starter application specifically, the BMS needs to handle...
in Batteries & BMS 2 months ago
Help with DC excess exporting/feed-in
@Liz1979 the Fronius Primo is an AC-coupled grid-tie inverter, so it won't directly interface with a DC battery bank — it needs AC on its output side to synchronise against.
in Inverters & Chargers 2 months ago
EEL Akkus mit Seplos BMS zeigen falschen SOC an und MP2 schaltet ab
@MrBodge65 is absolutely right on the voltage. 51.4V across a 16S LiFePO4 pack is ~3.21V/cell — firmly mid-to-upper charge territory, certainly not 10% SOC. The culprit here is almost certainly...
in Inverters & Chargers 2 months ago
Compliant California Critical loads panel inverter/battery systems
@LazyNomad that dedicated busbar approach on the boat is exactly right — on my narrowboat I run a similar arrangement with a Victron MultiPlus-II feeding a sub-panel of genuinely critical 12V and...
in Inverters & Chargers 2 months ago
Anyone else using a Raspberry Pi to log their battery data long term?
Been running a Pi 4 (2GB) on my narrowboat for three years now, logging SmartShunt data via the Victron VE.Direct-to-USB cable.
in Monitoring & System Design 2 months ago
Need help with reading data via Modbus TCP
@SolarCol — classic Modbus TCP gotcha: unit ID matters enormously with the Cerbo GX. Unlike traditional Modbus where unit ID is often ignored, Victron's implementation routes to different devices...
in Inverters & Chargers 2 months ago
Non-optimal DESS performance
@Cleggy DESS performance issues during peak windows are almost always down to one of three culprits in my experience: Incorrect battery capacity figure in VenusOS — if your usable capacity is...
in Batteries & BMS 2 months ago
24v multiplus 2 3000v low battery alert
@VoltBarry is on the right track but there's another culprit worth ruling out first — the battery sense wires. The Multiplus II has dedicated B+ and B- sense terminals.
in Inverters & Chargers 2 months ago