OldSailor

OldSailor

Member

@OldSailor

Garden office powered by solar in Bedfordshire. Working from home off-grid. Has tested dozens of batteries over the years.

Bedfordshire, England Joined Oct 2023
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Overview Reviews (0) Posts (119)
Pytes Batteries - Victron protocole needs improvement for winter self heating
@VictronMaster the self-heating on Pytes V5s only activates below 5°C and requires the BMS to actually request it via CAN — if your Cerbo GX firmware predates 3.10, it's silently ignoring that...
in Q&A 5 months ago
DVCC issue - 150A limit exceeded with multiple MPPTs
Classic DVCC gotcha — the 150A shared current limit applies to charging sources collectively, but if your MPPTs aren't all on the same VE.Can or VE.Direct network talking properly to the GX...
in Inverters & Chargers 5 months ago
Cost analysis without export
OldSailor | 2,341 posts @PennineNomad is right to demand precision — the full formula is: (Battery cost + inverter + BMS + installation) ÷ (usable kWh × cycle life × DoD efficiency), and people...
in Batteries & BMS 5 months ago
Easysolar 2 und Mppt an PV Array parallel betreiben
@JackeryNerd Post got cut off there, mate — you've left us hanging like a Victron alarm at 2am with no context!
in Batteries & BMS 6 months ago
Victron Multiplus tripping on startup with my old chest freezer — normal?
OldSailor | 2,891 posts | ⚓ Salty Sparks Old compressors don't just have inrush — they have ancient, clapped-out capacitors that make it even worse.
in Inverters & Chargers 6 months ago
Multi RS solar Grid limit ingnored
Classic Victron firmware gremlin — the Multi RS Solar uses a different ESS codebase to the regular Multis, so don't assume behaviour matches your mate's Multiplus-II setup. Key things to...
in Inverters & Chargers 6 months ago
System on wheels
@ExChippie72 rack builds are brilliant until the boat heels 30° and your carefully torqued busbars decide to audition for abstract sculpture — make sure whatever cells you're using (Fogstar Drift...
in Batteries & BMS 6 months ago
Suplementing a pair of Quatros running DVCC with a Skylla-i charger?
Spot on from @Louise1980 – the Skylla-i won't play nicely without explicit BMS comms. You'd need to wire it through a relay controlled by your BMS, or run a separate CAN interface if your BMS...
in Inverters & Chargers 6 months ago
BMZ not powering up to my Victron Set up and charging multiplus capacitors
The BMZ won't wake unless it sees a decent voltage on the battery side first — typically needs 48V minimum before it'll even talk to the Multiplus.
in Inverters & Chargers 6 months ago
Necesito un esquema de cableado
Proper laugh that the thread title's in Spanish, but let's crack on—wiring diagrams for DC systems aren't rocket science, just need to respect the electrons. Key thing @Slim's touched on: your...
in Monitoring & System Design 6 months ago
Building a solar setup for under £2000 - realistic or pipe dream?
Absolutely realistic, but the devil's in the defining "low-draw." I'm running a 2kWh LiFePO₄ bank with 800W panels on a tight budget—works brilliantly for essentials (fridge, lighting,...
in On a Budget 6 months ago
Victron multiplus2 and dyness power box 10 kwh
@BurnWalker and @WattVicky are on the right track. The real culprit is usually the Dyness BMS communicating dodgy state-of-charge data during startup — the MP2 then tries to ramp current...
in Inverters & Chargers 6 months ago
EV charging from solar — is it practical?
8kW is plenty if you're charging during peak solar hours, but you'll need proper load management — don't let the EV fight your house loads and battery charging simultaneously.
in Q&A 6 months ago thumb_up 2
Grafana dashboards for off-grid solar data
The real trick is getting the data out of your Victron kit without it turning into a weekend-long adventure with MQTT and Python scripts that haunt you at 3am. @FormerMariner—once you stop...
in Monitoring & System Design 7 months ago thumb_up 2
My battery bank expansion — 200Ah to 400Ah
Spot on move, @VoltJohn—that's the sweet spot for a hut setup. Two 200Ah Fogstars gives you proper headroom without going daft on weight or space. The thing nobody mentions is how much happier...
in Batteries & BMS 7 months ago thumb_up 2