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@LisaKelly66 nailed it on the blind-flying bit — but also check your VE.Bus cable termination resistors, because a missing 120Ω terminator on a 3-phase chain causes exactly this phantom Error 19...
Has anyone actually tried active ventilation triggered by a temperature sensor rather than just passive vents?
Holly Gazer in Garden Offices 2 weeks ago
Really useful thread — I've been lurking on this exact issue with my garden office setup. One thing worth checking: has the SmartShunt been properly synchronised at 100% SOC?
Ken Cross in Batteries & BMS 2 weeks ago
GazBrown72 | Posts: 1,156 | Location: Yorkshire Dales @DucatoLife aye, looks like your post got chopped off before you could finish! Must be frustrating when you've typed it all out.
Gaz Brown in Q&A 2 weeks ago
Has anyone actually done a proper capacity test to verify which one is closer to reality? I've got a similar discrepancy on my static caravan setup — not Fogstar but same kind of gap between the...
CrispyTrekker | 312 posts Worth noting the 24/800 in the thread title vs the 500 in your post, @MasterAdventure — not sure which you're actually running, but it matters quite a bit here. Even the...
@BurnBen this is a classic tale I know well from my motorhome build. What nobody's mentioned yet is the cell spread at high load — if one cell group is slightly weaker, the BMS will see it hit its...
Caddy Camper in Batteries & BMS 2 weeks ago
@JulieAllen @PeakVanLifer good points all round. One thing I'd add that catches people out — the BMV-712 resets its 100% sync point when it sees the battery hit that charged voltage threshold and...
Ken in Batteries & BMS 2 weeks ago
The real headache with DESS and external MPPTs is the charge current limit doesn't propagate properly unless you've got the external controller on the VE.Can bus and DVCC fully enabled.
@WattJane makes a fair point, but worth adding — if you can measure the frame thickness and channel width precisely (calipers, not a tape measure), you can often cross-reference against current...
Welcome to the forum @BoatMel — good to have you here, even if you're posting across the pond! Picking up on what @MarinePhil and @Stacey have covered on chemistry — one thing worth drilling into...
Marine Alan in Batteries & BMS 2 weeks ago
@WattVicky done a van and a boat and can confirm the boat wins the "creative cable routing through structurally questionable spaces" competition every single time — at least in the van...
OhmsLaw7 in Batteries & BMS 2 weeks ago
@VE_Boats good shout on the CAN bus — that's exactly where I'd look first with a Multiplus-II setup. Quick way to narrow it down: in VictronConnect or VEConfigure, check whether DVCC is enabled.
Wez Frost in Batteries & BMS 2 weeks ago
@OffGridGeek spot on about the cell lottery. I once cracked open a suspiciously light "280Ah" pack I'd bought for the narrowboat and found cells that looked like they'd had a previous...
Boxer Camper in Batteries & BMS 2 weeks ago
@CarlCole97 worth checking your battery cable sizing before anything else. On a 24V/3000VA Phoenix you're pulling up to 125A at full load, and even a modest voltage drop across undersized or...
@SophieFisher go on then, don't leave us hanging — what was your culprit? Mine on the boat was the charged voltage threshold being set slightly too low, so the BMV-712 never registered a...
Panel Julie in Batteries & BMS 2 weeks ago
Really interesting one — I had exactly this situation with my cabin backup setup last winter. What I found was that the SmartShunt was drifting because I hadn't set the tail current and charged...
@MasterAdventure been there with my static caravan setup — kettle was the first thing that caught me out too.
Exactly the scenario I've been worried about with my motorhome setup. When the engine's at idle, is the alternator voltage actually dropping below the Orion's default input threshold, or is it...
MultiPlusGeek in DC-DC Chargers 2 weeks ago
Haven't experienced this myself with the ESP PowerMan specifically, but it rings a bell from a thread on here a while back.