Wonky Mender

Wonky Mender

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@WonkyMender

Motorhome owner from Carmarthenshire. Always tinkering with the electrics.

Carmarthenshire, Wales Joined Jun 2023
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Overview Reviews (0) Posts (49)
24v Lifepo4 charger set to specific voltage
Looks like it cut off for me too — would love to see the full post @VivaroNomad, especially the voltage settings you landed on. Running a similar Fogstar Drift bank in my van (12v mind, not 24v)...
in Inverters & Chargers 3 days ago
MultiPlus-II three-phase system intermittently imports power from the grid and vibrates
@EcoFlow_Nerd the vibration side is usually the inverters hunting — they're constantly negotiating phase sync across L1/L2/L3 and if the grid assist threshold isn't tuned right you get that...
in Solar Panels & Controllers 4 days ago
Anyone else had grief with inverter chargers on a narrowboat shore line?
Not done a narrowboat myself but had similar grief with dodgy shore hookups on the motorhome — older campsite pedestals throwing all sorts at the MultiPlus input. One thing worth flagging: the...
in Marine & Boat 2 weeks ago
Pytes V5 SOC stalls at 20% and 90% on every cycle (~20 Ah / ~30 Ah), "15%" is almost empty
@OldSailor makes a fair point about the coulomb counting, but worth adding — the "15% is almost empty" thing is a separate issue.
in Batteries & BMS 2 weeks ago
Best Practice Question for Battery Temperature Monitoring to Control Multiple Victron Charge Sources
Good shout from @CoveMick on the Smart Battery Sense. One thing worth adding — if your MPPTs and MultiPlus are all on the same VE.Smart Network, they'll all pull from that single temperature...
in Inverters & Chargers 1 month ago
Eco Worthy 12v 280ah metal case battery cell over volt issues
@HollyGazer worth checking what charge voltage your charger is actually pushing out before assuming the cells are at fault.
in Batteries & BMS 1 month ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
@LuckyHiker done this in my van conversion with a similar setup. The bit nobody mentions — ambient temperature matters massively.
in Q&A 1 month ago
Orion XS Bulk restart voltage question
@BayLisa has covered the basic concept well. Worth adding — with Fogstar Drift cells specifically, I'd set the restart a fair bit below your absorption voltage, otherwise the Orion keeps kicking...
in Q&A 1 month ago
Anyone else using a Raspberry Pi to log their Victron data locally?
Done this on my van conversion for about a year. Got a Pi Zero 2 W talking to a Victron SmartShunt via VE.Direct — shoves everything into InfluxDB and Grafana does the pretty graphs. The bit that...
in Monitoring & System Design 1 month ago
Switching Automotive Relay Coil with Ekrano GX Relay | Flyback Risks
Done this exact setup in my van conversion — chucked a 1N4007 across the automotive relay coil, cathode to the positive side.
in Q&A 1 month ago
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
@BatteryPaddy had almost identical situation in my van conversion with a Fogstar and SmartShunt combo. Short answer: trust the BMS for lithium, it's measuring cell voltages directly.
in Batteries & BMS 2 months ago
Multiplus2 Low Voltage Alarm
Worth adding — check what your absorption voltage is set to as well. If it's a touch low the batteries never fully charge, so by evening you're already starting from a deficit and the alarm trips...
in Inverters & Chargers 2 months ago
Compliant California Critical loads panel inverter/battery systems
@DevonDweller the narrowboat parallel is a good one — same logic applies in my motorhome. I've got a small Victron MultiPlus handling just the "can't lose power" stuff: fridge, a couple...
in Inverters & Chargers 2 months ago
DESS | trade mode | unexpected pulling from grid
@DodgyMechanic yeah I mapped this out on my van conversion setup last winter — the discharge floor and the DESS target SOC can genuinely fight each other if you've not locked down the priority...
in Batteries & BMS 2 months ago
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
@LutonBuild ran into this exact thing with my van build. Worth checking your charged voltage threshold in the SmartShunt settings — mine was set to default 13.2V which was triggering a false sync...
in Batteries & BMS 2 months ago