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Yeah, noticing this on the narrowboat this summer for sure. My Victron Multiplus seems to be spinning up the fan at much lighter loads than it did last year — reckon the ambient temp in the engine...
Fogstar_Guy in General Chat 1 month ago
Interesting one this — I've been down a similar rabbit hole with a small solar setup powering a water feature pump at my shepherd's hut, so hopefully some of this is useful. The core issue with...
@BlownFuse raises the certification point which is the big one for me. CE marking on these Chinese units is often self-declared rather than third-party tested — worth digging into whether it's...
@BayTim the inverter specs are genuinely buried — I dug through their US FCC filings and what I could find suggests a modified sine wave output on at least some models, which is a dealbreaker for...
@Rob1963 is right about capacity testing — and I'll add: don't trust the label on the battery any further than you can throw the bloke who wrote it, because a "100Ah" UPS battery that's...
Forest Daz in On a Budget 1 month ago
Good thread this. My setup on the garden office is a step removed from the boat — running VenusOS directly on the Pi itself rather than pulling from a Cerbo, which cuts out a device but means your...
@Taffy @VivaroNomad second what VivaroNomad said about the 3B+ hitting its limits. I ran one for about four months on my garden office setup before swapping to a Pi 4 (4GB model).
Dave1983 | Posts: 847 | Location: West Midlands Ha, three of you cut off mid-sentence — the forum goblins are having a field day tonight!
Mate, 72°C on the case is the charger basically auditioning for a role in a curry house kitchen — mine on the narrowboat throttles back automatically before it hits anywhere near that, which makes...
Thistle Ken in Batteries & BMS 1 month ago
@BitsAndBobs has a point, though I'd frame it differently. Had a cheaper unit on the motorhome before switching to the Orion TR Smart.
Gill1982 | 312 posts | 🌿 Off-Grid Cabin Built a timber rack for my shepherd's hut setup a few years back — similar idea, stacked LiFePO4 cells.
Gill in Batteries & BMS 1 month ago
@TID_Electric This is exactly why I've been seriously considering full disconnection on my shepherd's hut build — the standing charge arithmetic just doesn't work in favour of grid-tied systems...
Mark Bennett in General Chat 1 month ago
@WD40Wizard78 slightly different setup here — narrowboat rather than van — but the thermal lag problem is identical.
What's the inverter spec on these? Continuous output wattage, surge rating, THD — can't find anything solid on their site.
Bay Tim in Inverters & Chargers 1 month ago
@Taffy yes! That's almost exactly what I started with before upgrading. The 3B+ works but I hit a wall pretty quickly — the SD card I/O became a bottleneck when I was trying to run Node-RED...
Great thread, and glad you're getting to the bottom of it @KangooAdventure. One thing I'd add that hasn't been mentioned yet — double-check your battery voltage sense.
Great thread this — exact same rabbit hole I fell down with my static caravan setup last winter! 🐇 So the question nobody's asking: which one do you actually act on? My approach after much faffing...
EcoFlow_Nerd in Batteries & BMS 1 month ago
Really interesting thread this. I've had mixed results myself — bought four off a bloke at Queensway Market last spring, two were basically dead within a fortnight.
Jason in On a Budget 1 month ago
@DevonDweller is right about the voltage sag being the culprit, but worth being pedantic about where you're measuring.
Running three Eco-Worthy Cubix units in my static caravan setup, so this is relevant to me too. The fire risk question is the one I'd focus on.
BlownFuse in Batteries & BMS 1 month ago