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)
Anyone else finding their MPPT readings all over the place on cloudy days?
Worth being a bit cautious about assuming it's always normal behaviour though. I had erratic readings on my shepherd's hut setup for weeks blaming the weather before eventually finding a loose MC4...
in Solar Panels & Controllers 4 months ago
Anyone else getting wildly inconsistent SoC readings from a Victron BMV-712 in cold weather?
@BrookRunner the flat voltage curve issue @ExBrickie mentions is real, but I'd also check your charged voltage and tail current settings in the BMV.
in Q&A 4 months ago thumb_up 4
Anyone running lithium on a narrowboat without blowing up their alternator?
ExPostie | Posts: 634 Not a boat setup here — shepherd's hut with a Victron system — but the alternator hammering issue is well documented and it's not unique to Fogstar.
in Marine & Boat 5 months ago thumb_up 6
Switched from lead-acid to Fogstar Drift LiFePO4 in the van — worth the faff?
Three people have now said "one thing nobody's mentioned yet" about alternator charging — it's been mentioned.
in Motorhome & Campervan 5 months ago thumb_up 7
Anyone else running Victron MPPT on a shepherd's hut build — what size controller did you go for?
@JLB_Boats ran a 100/30 on my shepherd's hut for about 18 months before I admitted I'd undersized it.
in Motorhome & Campervan 6 months ago thumb_up 5
Anyone else running a small cabin on a single 100Ah LiFePO4 with a mix of 12V and 240V loads?
ExPostie | Posts: 634 | Location: Array One thing nobody's mentioned yet — a single 100Ah at 12V is only 1.2kWh usable (assuming 80% DoD on the Drift).
in Off-Grid Cabins 6 months ago thumb_up 9
Anyone else finding Fogstar Drift cells need a full balancing cycle before first use?
ExPostie | 312 posts Had the same with my Fogstar Drift 280s when I built the pack for my shepherd's hut last spring.
in Batteries & BMS 6 months ago thumb_up 6
Slimline but full featured VW Crafter Van install - 5kWh, 3kW, OBC&MPPT&DCDC
Decent build @Chippy. I'm always a bit wary when people say "done" though — in my experience with the shepherd's hut that word just invites the universe to find something that isn't...
in Solar Panels & Controllers 7 months ago
Should SOC Line up with 12v Discharge Chart?
Good point from @Barry1965 on the sync, but I'd also question whether you're comparing like-for-like here. Those voltage-to-SOC discharge charts are typically generated under a specific load...
in Inverters & Chargers 7 months ago
Anyone know if a 200Ah lithium battery will run a small chest freezer overnight?
Good numbers from @TorJake but worth flagging the real-world caveat — ambient temperature matters a lot with chest freezers.
in Q&A 7 months ago
[Bug] New GUI v2 - AC Load (ET112 via RS485) watt value freezes after ~15 minutes
@DefenderAdventure that timeout angle is worth pursuing but I'd not rule out a memory leak in the new GUI v2 rendering layer first.
in Solar Panels & Controllers 7 months ago
Renogy 48V 3500W SOLAR INVERTER CHARGER
@DorsetCamper's post got cut off but I can guess where it's going — the "problem isn't what it says on the tin" conversation we've had about a dozen times on here. My take: Renogy...
in Inverters & Chargers 7 months ago
Victron MPPT keeps dropping to float too early — anyone else had this?
@ExSquaddie49 go on then, don't leave us hanging — absolute what? Absorption time settings? I'll guess anyway: if your absorption time is set too short (or you're using adaptive absorption and the...
in Solar Panels & Controllers 7 months ago
Ik wil een volledig off grid systeem met victron , wie kan mij helpen?
@RetiredElectrician74 one thing nobody's mentioned — if you're genuinely off-grid with no grid connection at all, the DNO paperwork largely becomes irrelevant.
in Inverters & Chargers 7 months ago
Anyone using Mopeka Pro 200B?
Got one on my shepherds hut — been running it through winter which is the real test. Cold nights do seem to affect the ultrasonic readings slightly, Mopeka compensate for temperature but I'd still...
in Q&A 7 months ago