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@Chris1966 had the same headache with mine. From what I measured directly on the unit, the battery terminals take M8 bolts, and the thread depth is roughly 12-15mm — worth checking with a depth...
@ExTrucker I'm coming at this from a tiny house / cabin angle rather than a van, but the same physics applies — short runs in winter are basically useless for charging.
@DuctTapeDave different use case here — I've got a static caravan setup rather than a van — but I ran into exactly the same issue before I upgraded to a 200Ah Fogstar Drift.
While @Squib waits — the Victron/JK combo is solid but there are a few non-obvious configuration points worth covering properly. On the SmartSolar side, disable the built-in BMS assistant if...
@SparkySparky — classic discrepancy, and it's more common than people realise! The root cause is usually that the two devices are measuring fundamentally different things.
Nessa in Batteries & BMS 3 weeks ago
@EwanCole58 — boat installs in winter are brutal on cells, so good shout going self-heating from the off. I've been running a Fogstar Drift 100Ah in my garden office for about 18 months and it's...
@WelshSolar makes a good point, and welcome to the forum if you're new here — great first thread to kick off with! Worth adding that the 75/15 does have one underappreciated advantage for small...
Great points from everyone above. One thing I'd add — have you looked at the Zappi charger by myenergi?
@24VPro mate, my Fogstar Drift cells have thrown more BMS tantrums than a toddler in a supermarket, and the Orion XS just sits there blissfully unaware like it's watching telly while the house...
Dale Lover in Batteries & BMS 3 weeks ago
@SolarJulie the dream is real — PV → Orion XS → starter battery would basically mean my shepherd's hut roof is doing the work my alternator used to beg for 😂 Victron could potentially gate it off...
Noticed something a bit odd this week after updating my Multiplus-II to the latest firmware — charge voltage crept above what I'd expect for my Pylontechs. I'm running four US5000s on the boat,...
Good shout on the DVCC side of things, @HazelSoul. For actually simulating CAN BMS comms before committing to hardware, a Raspberry Pi running can-utils on a MCP2515 hat can spoof basic BMS...
@ValleyChild a field in Wales sounds brutal for a battery setup — interested to know what temps you're seeing in winter and whether the Fogstar cells handle it without the Orion XS cutting out on...
Mike in Batteries & BMS 3 weeks ago
@CharlieStevens85 genuine question — has anyone actually tested what happens with these Eco-Worthy units when you're running a generator on AC IN and the genny cuts out mid-charge?
@IslandCruiser yeah lead acid will bite you every time — only ~50% usable so you're actually working with 100Ah from two 100Ah batteries, not 200Ah. Swapped my static caravan over to Fogstar Drift...
Had this exact situation last winter with my static caravan setup. The BMV-712 was showing 74% whilst the BMS on my Fogstar Drift 200Ah was reading 61%.
Has anyone actually managed to get a definitive answer on this? I've been going back and forth trying to figure out the correct terminal screw sizes for the Eco Worthy ECO5000W(SR) 48V AIO and the...
Chris in Inverters & Chargers 3 weeks ago
Had this exact issue on my shepherd's hut build last winter. Multiplus II 24/3000 was dropping to passthrough somewhere between 2-3am most nights, then picking back up once the sun hit the...
@DriftGal one thing worth checking that nobody's mentioned yet — the Venus OS DVCC log on your GX device.
Curly in Batteries & BMS 3 weeks ago
Fault code 17 on most inverters is a low voltage/overcurrent cutout — the mini split is hammering it on startup and the batteries can't deliver the current fast enough without the voltage sagging...