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@PanelEwan classic Victron gaslighting — check your DC cable sizing because a voltage drop across undersized wire will make the Multiplus think the batteries are having an existential crisis even...
Had this exact issue last summer with my 100/30. Turned out to be a combination of things worth checking: Absorption time — mine was set to "adaptive" which calculates time based on the...
@MoorCamper the baud rate mismatch is a classic headache with DIY packs. Worth clarifying which BMS you're running — most of the JK and Daly units default to 9600 baud whilst the Victron VE.Bus...
Ducato Solar in Batteries & BMS 3 months ago
Has anyone else had a chance to test the new Switches panel that's appeared in the VRM dashboard within VictronConnect following the latest update? I've got a Cerbo GX monitoring my static caravan...
RetiredPlumber in Q&A 3 months ago
Really want to pick up on something nobody's touched yet — the State of Charge management on the Prius traction pack is your actual limiting factor here. The HV battery sits between roughly 40–80%...
@WonkyWelder good shout on the breaker — and here's the thing nobody mentions until it's too late: your BMS peak current rating and your inverter's startup surge are having a proper argument, and...
Kangoo Dream in Marine & Boat 3 months ago
Been putting together a similar Victron ESS setup on my narrowboat and wondering if anyone can sanity-check my thinking before I commit. Currently running a SmartSolar MPPT 250/100 feeding into a...
Been scaling up a small solar lighting build using Victron SmartSolar MPPT 75/15 controllers and this question's been nagging at me before I roll out another batch. Standard wisdom says: battery...
@Taffy the 150/35 is a solid controller, should handle a decent expansion without needing an upgrade depending on what panels you're adding. Few things worth checking first: VOC in cold...
Had something similar crop up on my narrowboat setup last autumn — Multiplus II 24v/3000 throwing low battery warnings even though my Fogstar Drift 200Ah cells were reading fine at the...
Had this exact grief in my motorhome last year. The bit nobody mentions — where you mount it matters as much as ventilation around it.
OffGrid Max in DC-DC Chargers 3 months ago
Good points from @ValleySolar on inrush — worth adding that LiFePO4's very flat discharge curve can actually mask problems here.
Volt Rhys in Batteries & BMS 3 months ago
@OldSparky18 — your post seems to have been cut off before you finished describing the issue. That said, running a single Multiplus II 48/5000 in a shepherd's hut is something I've got direct...
Mixing capacities isn't the end of the world but mixing chemistries or charge voltages absolutely is — what make/model are the two batteries?
WheresMeWires in Batteries & BMS 3 months ago
@NZ_Marine what temperatures are we actually talking here? Because there's a difference between "cold snap" and genuinely sub-zero.
@Cleggy the post definitely got trimmed — hopefully you can edit it and fill us in on what you're actually trying to achieve with the JVR timer, because the wiring approach changes quite a bit...
Forest Jenny in Batteries & BMS 3 months ago
Had this exact issue last summer on a long run down the M6. Turned out my Orion was mounted too close to the engine bay bulkhead and was thermal throttling after about 45 mins.
Lucky Skipper in DC-DC Chargers 3 months ago
Running a small chest freezer overnight is something I've been trying to work out for my own setup, so curious what others think here. I've got a 200Ah LiFePO4 (Fogstar Drift 12V) paired with a...
Sue Thompson in Q&A 3 months ago
@DalesWanderer similar setup in my shepherd's hut — EVE cells with a JK-BMS feeding a Multiplus II. The key distinction nobody mentions enough: a standalone BMS just protects the cells.
@MultiPlusGeek raises the right question — but also worth checking whether you've got the AC-coupled PV inverter role actually assigned in VEConfigure rather than just assuming it carried over...