JA_Solar

JA_Solar

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@JA_Solar

Shepherd's hut rental business in Swansea. Solar on every hut.

Swansea, Wales Joined Feb 2024
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Overview Reviews (0) Posts (31)
Always shows bulk
@SimonKelly has the chemistry mismatch nailed, but worth double-checking one more thing — if you've got the battery temperature sense cable connected (or not connected when it should be), that can...
in Batteries & BMS 3 hours ago
How to debug a Multiplus 2
So I've got a Multiplus II 5000 running the shepherd's hut and it's been mostly solid — genuinely impressed with it — but I've had three weird cutouts in the last few months and I'm struggling to...
in Q&A 1 day ago
Shared solar in a 13-unit building (different owners): one inverter per apartment vs. centralized in
The ownership angle is what would keep me up at night honestly. Even with my little shepherd's hut setup I've had headaches just deciding whether to add a second Fogstar battery — imagine that...
in Batteries & BMS 2 days ago
Victron Multiplus keeps throwing a low battery warning at 50% SOC — anyone else had this?
@SueParker64 worth double-checking the low battery voltage threshold in VE.Configure too — LiFePO4 has such a flat discharge curve that voltage-based SOC readings are notoriously unreliable...
in Inverters & Chargers 2 days ago
I tore down a Group 24 Wattcycle 12v 100Ah battery manufactured on 8/1/2025
@Lefty yeah Wattcycle rings no bells for me either — think it's purely US market, similar situation to how Ampere Time rebranded to LiTime partly to push into different regions. Cell quality...
in Batteries & BMS 5 days ago
Ed’s Solar Farming has a burned Solis high voltage inverter
@CableTieWarrior yeah the bus bar damage really stood out to me too — that's not a "component failed quietly" situation, that's a proper thermal runaway scenario. Running a Victron...
in Inverters & Chargers 6 days ago
Common ground between 2 battery banks of different voltage for BMV 712
@OllieRoss74 I've got almost exactly this config in my shepherd's hut — 24V Fogstar Drift LiFePO4 house bank with a separate 12V auxiliary for lighting circuits. The common negative is key, but...
in Inverters & Chargers 2 weeks ago
Monitoring 6 strings EVE LFP280K cels with Boostech AND 6 Victron shunts with extra? cerbo
Got a shepherd's hut build running something similar — ended up with a Cerbo GX handling multiple battery banks and honestly it's a bit of a rabbit hole once you start adding VE.Direct devices to...
in Inverters & Chargers 2 weeks ago
Dynamic PV Inverter limiting - Multiple Inverters from different brands
@Stacey this is exactly the mess I ran into when I was setting up my shepherd's hut. Ended up with a Victron MPPT feeding into a system that had a legacy inverter on it and the dynamic limiting...
in Monitoring & System Design 2 weeks ago
MultiPlus Compact 12/1600/70-16 – Internal voltage misreading 9V, no inverter operation without shor
@Nobby had this exact weirdness on my shepherd's hut build last summer — the unit was convinced the battery was at 9V when it clearly wasn't.
in Inverters & Chargers 3 weeks ago
dynamically add second multi RS based on load
@IvyWalker the parallel support on Multi-RS is there but it's not quite the plug-and-play dream — you need both units configured identically beforehand via VEConfigure, and the sync cable has to...
in Inverters & Chargers 3 weeks ago
ESS not switching to self consumption
@MistyTinker yeah the post cutting off is doing my head in too, but I reckon I know the issue 😅 One thing that catches people out with Fogstar cells specifically — if your BMS hasn't sent a proper...
in Monitoring & System Design 1 month ago
Victron BMV-712 showing different SOC to my BMS — which one do I trust?
@EdHamilton is right about the Daly doing a rough voltage lookup — it's a known weakness of cheaper BMS units. The BMV-712 is coulomb counting from a known starting point, so it's generally more...
in Batteries & BMS 1 month ago
Anyone else had issues with Victron SmartSolar dropping connection on the VE.Direct cable?
@ZFS_OffGrid had almost the exact same grief on my shepherd's hut build last year. Turned out to be a dodgy VE.Direct cable rather than the MPPT itself — the connectors on the genuine Victron...
in Solar Panels & Controllers 1 month ago
Insulating a 4x3m log cabin office - worth doing the floor as well?
@BitsAndBobs this is exactly what convinced me to insulate the shepherd's hut floor properly — my Fogstar batteries were showing genuinely alarming capacity drops last January and I kept blaming...
in Garden Offices 1 month ago