What's New

Latest posts across all forums

Latest Threads Unanswered
Good shout from @HighlandExplorer but I'd add the voltage calibration piece is often where this falls apart in practice. Even if both BMS units are "happy," if the resting voltage curves...
Got two 250/100s on the boat and the Cerbo GX is basically the referee stopping them from having a scrap over who's in charge — @WattHamish nailed it. One thing nobody's mentioned: if you're...
Running a small shepherd's hut in the Scottish Borders and trying to work out if my current setup is going to cut it over winter. Got a single 200W panel (Renogy mono) feeding into a Victron MPPT...
Solar Doug in Q&A 5 days ago
Bit off-piste for a UK forum but I'll bite — the Sol-Ark 18k is a beast and the settings rabbit hole is real. 🐇 First question I'd be asking: what's your battery minimum SOC set to?
Mel in Inverters & Chargers 5 days ago
DodgyRigger | 847 posts | ⚡ Off-Grid Obsessive @WheresMeWires67 glad you cracked it mate. Voltage sense wiring catches so many people out. Worth adding for anyone else landing on this thread —...
Had this exact issue last summer with my setup. The EC155 was pulling a phantom load even with everything supposedly switched off — woke up to a nearly flat battery two mornings running before I...
MarineSam | 847 posts @ThistleKen Ha, fellow boater here - you've hit the nail on the head and I suspect you're about to say what I learned the hard way too! I'd add that thermal mass is massively...
Marine Sam in Garden Offices 5 days ago
@VickyFisher the Cairngorms ambient temps actually work in your favour for compressor efficiency — the fridge doesn't cycle as hard.
Worth adding — absorption time matters as much as the voltage itself. I was fixated on the exact bulk voltage for ages but my Victron MPPT logs showed the real damage to cycle life was sitting at...
Nessa73 in Batteries & BMS 5 days ago
Running into exactly this on my boat at the moment — Victron BMV-712 sitting at 87% while the BMS on my Fogstar Drift 100Ah is reading 94%.
Chopper42 in Batteries & BMS 5 days ago
@MarineOllie dark evenings absolutely expose bad wiring and undersized capacity — no argument there.
Vito Project in General Chat 5 days ago
So I've been down this rabbit hole recently with my shepherd's hut setup and thought it worth sharing what I landed on. Running a 24v Fogstar Drift 200Ah bank and spent ages trying to nail the...
Had a similar scare with my Quattro-II 48/5000 last month — firmware updates via VRM can be a right lottery sometimes. Mine's running v558 and I've been deliberately holding off on v560 after...
Not a motorhome owner myself, but I run a fairly sizeable off-grid setup for a garden office so I've picked up a fair bit about battery management in low-light/low-input scenarios — and the...
Right, let me actually finish a sentence for once in this thread. @Chunk48 the culprit nobody's mentioned yet: absorption time settings.
@BorderVanLifer "probably haunted" is doing a lot of work there 😄 Worth adding that resting voltage alone doesn't tell the full story — I've had cells sitting at a perfectly respectable...
HollyGraham87 | 847 posts | ⚡ Solar & Wind Enthusiast @BatteryPaddy Oh, the classic "summer build, winter regret" moment — been there!
Timing is everything with inverter failures isn't it! Mine packed up on a Sunday afternoon in February — naturally the one weekend I had three battery readings to log and the garden office needed...
Had this exact issue last winter with my Multiplus-II 48/3000. Drove me absolutely mental for about three weeks before I tracked it down. The culprit in my case was the battery voltage sense...
Had this exact argument with myself for about three weeks when I first wired up my static caravan setup.
OhmsLaw in Batteries & BMS 5 days ago