What's New

Latest posts across all forums

Latest Threads Unanswered
@BatteryTim yeah the vague docs thing is a real pattern with ECO-WORTHY — had similar with their panels, specs sheet was basically aspirational fiction 😄 For EV charging specifically (my use case)...
LK_Solar in Batteries & BMS 1 month ago
Been thinking about this after a mate asked me something similar last week — running a 12v compressor coolbox directly off the load output on a Victron SmartSolar MPPT. Short answer from what I've...
@ExChippie72 and @Jonno71 — the Modbus register map is where I'd start too. Registers 5 and 6 (charge current setpoint and enable/disable) are the obvious levers, but what's often overlooked is...
Been through almost exactly this decision two years ago with my garden office setup, so thought I'd chip in. The stone outbuilding looks appealing on paper — solid, permanent, already standing.
Nige in Off-Grid Cabins 1 month ago
Running a small chest freezer off a 200Ah lithium (Fogstar Drift 12V if it matters) and trying to work out if I've got enough capacity to get through the night without the solar doing anything...
Taffy62 in Q&A 1 month ago
Got me thinking about whether my current Victron setup could handle EV charging on top of everything else without the whole thing becoming a project... Anyone here actually running EV charging...
Sam Frost in Batteries & BMS 1 month ago
Great thread @DefenderAdventure. One practical consideration worth flagging — the Multi-RS requires a shared DC busbar and proper current sharing cables of matched length between units, otherwise...
Right, so this is tangentially related but I reckon it belongs here since it's fundamentally a BMS/inverter comms issue underneath all the fluff. I've just finished commissioning a Victron...
Golden Nomad in Batteries & BMS 1 month ago
Running this exact setup on both my garden office and boat — the Cerbo's Venus OS relay logic is solid but I'd add one thing nobody's mentioned: hysteresis. If you trigger the non-essential shed...
CE_Builds in Batteries & BMS 1 month ago
The bit nobody mentions: VOC drops as panels heat up, so your "dangerously close to 250V" string in winter morning cold is actually your worst case — factor in -10°C and VOC can spike...
Been scratching my head over something with my setup and wondering if others have run into similar. Running a Victron Multiplus II 48/5000 with a Cerbo GX, backed by a couple of Fogstar Drift...
Nobby in Inverters & Chargers 1 month ago
@Wardy has nailed it with the pre-charge resistor — that's the proper engineered solution. Worth specifying though: for a 48V Quattro 5000 you're looking at roughly 47–100Ω, 25W rated minimum for...
OXM_OffGrid in Batteries & BMS 1 month ago
Had this exact headache with my motorhome build last year. Short answer: trust neither blindly, use both. The SmartShunt is only as good as its calibration.
@MaxFrost narrowboat backup is literally my use case mate. Running a 400W Rutland windcharger as my "proper" setup but I've got a stripped Zanussi BLDC motor sitting in my engine room...
Grumpy Sparky in On a Budget 1 month ago
Been wondering the same thing actually — I'm in a similar position with a small off-grid setup and trying to figure out the right battery sizing. My situation: I'm primarily interested in keeping...
Roger Jackson in Q&A 1 month ago
@RelayDream makes a fair point that's worth expanding on — I ran a decent Epever PWM on my garden office build for two years without a single issue.
Defender Life in On a Budget 1 month ago
Worth noting for anyone who finds this thread later — this catches people out every single April and October without fail.
Been doing this for my garden office setup for about a year now. Pi Zero 2W handles it fine if you're tight on budget — doesn't need to be a Pi 4. One thing worth adding: I run a daily backup...
QuietTrekker | 203 posts @Louise1984 yeah this caught me out last winter with my setup too. Worth checking your temp compensation settings in the VictronConnect app — if the battery temp sensor...
Hey @ExChippie72 — one thing worth considering that nobody's touched on yet is the interaction between your heat pump's defrost cycles and DESS.
Jason in Q&A 1 month ago