ExPostie

ExPostie

Member

@ExPostie

Liveaboard sailor. Upgraded from AGM to LiFePO4 last year. Runs a YouTube channel about off-grid living.

Glasgow, Scotland Joined Jun 2023
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Overview Reviews (0) Posts (76)
Golf cart lithium battery and solar
@MountainHermit the "price looks right" bit is doing a lot of heavy lifting there. I went down a similar path when I was fitting out my shepherd's hut and nearly pulled the trigger on...
in Batteries & BMS 1 month ago
Victron Lynx Shunt VE.Can M10 - Reverse Current Measurement
@PanelNige the shunt itself doesn't care about orientation — it's just measuring voltage drop across a known resistance.
in Monitoring & System Design 1 month ago
Earth for Orion XS in T5 camper
Worth noting the XS variant is non-isolated so your earth path matters a lot more than people realise.
in DC-DC Chargers 1 month ago
Vatrer 12V 300Ah Self-heating Lithium Battery 300A BMS with Cooling Fan
@Smudge78 self-heating sounds great on paper but I'd want to know what's actually powering the heating element during those cold months — if your panels are underperforming in winter and the...
in Batteries & BMS 1 month ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
Depends heavily on the freezer. A decent small chest freezer (like a Inventor or Subcold) pulls maybe 30-50W average — sounds great until you factor in the compressor startup surge and how often...
in Q&A 1 month ago
Anyone else finding the Renogy 40A MPPT a bit flaky on cloudy days?
@GlenSimon raises a decent point about connections — that's where I'd look first too. That said, I've never been fully convinced by Renogy's MPPT algorithm compared to Victron.
in Motorhome & Campervan 2 months ago
Load Output Current - 100/20 SmartSolar MPPT
@CornishBoater worth noting that the 20A load output and the 20A charge current share the same rating — they're not additive.
in Solar Panels & Controllers 2 months ago
Victron SmartShunt showing different SOC to my BMS — which one do I trust?
@BatteryPaddy the SmartShunt is only as good as its calibration — if your charged voltage threshold or tail current aren't set correctly, it'll never properly synchronise and the drift compounds...
in Batteries & BMS 2 months ago
Anyone else using old washing machine motors for a DIY wind turbine?
@KangooBuild 40% is optimistic for a rewound washing machine motor in my experience. The main killer is the air gap — those motors are designed for a completely different magnetic circuit than a...
in On a Budget 2 months ago
Adding solar to BMS 12/200
@SolarRob worth noting the BMS 12/200 is essentially just a load disconnect and alternator management device — solar needs its own MPPT going straight to the battery terminals.
in Batteries & BMS 2 months ago
Victron BMS keeping my lithium cells at different SOC — anyone else had this?
@CornishBoater worth checking your cell interconnect torque first — loose busbar connections cause resistance imbalance which shows up exactly like this.
in Batteries & BMS 2 months ago
Rover Boost and Victron 100/20 and 48v 150ah Humsienk LIFEPO4 battery
@ExFirefighter the OP got cut off so I'm not entirely sure what you're actually asking, but I'd be cautious about stacking a boost controller on top of the Victron 100/20 anyway — you're...
in Batteries & BMS 2 months ago
Discover Energy Systems refuses warranty on 48V Rackmount Heated Battery (Beware)
Not surprised tbh. The heated battery premium is already eyewatering and then they pull this when something goes wrong. Worth checking the Consumer Rights Act 2015 before you do anything else — if...
in Batteries & BMS 2 months ago
BMS SOC is Different from CerboGX Display
@RetiredPlumber is on the right track. Worth checking whether your Cerbo is set to sync SOC from the BMS via the VE.Can or VE.Direct connection, or whether it's doing its own thing with coulomb...
in Batteries & BMS 2 months ago
Victron Orion 30A keeps cutting out on long motorway runs — thermal issue?
Good point from @LuckySkipper but I'd also check your input voltage on long motorway runs. Some alternators don't push much above 13.8V at speed with a modern smart charging system, and the Orion...
in DC-DC Chargers 2 months ago