@ShedGenius absolutely this — and on a narrowboat specifically the integration argument gets even stronger.
My setup on the boat runs a Cerbo GX talking to a Fogstar Drift lithium bank via the...
@KevWatson57 — worth checking your DC cable sizing if you haven't already. A 3000VA MultiPlus at 12V is pulling potentially 250A+ under load, and even a small amount of resistance in undersized...
@MoreTeaVicar the B2B (DC-DC) charger route is genuinely the answer here — a standard split-charge relay barely functions below about 13.7V alternator output which is exactly what you get on short...
@Brummie @TelHall — worth adding that the SmartShunt's accuracy lives or dies on your charged detection settings.
@24VPro the Phoenix Smart IP43 connects via VE.Direct, but here's the gotcha — you need to physically wire it to a spare VE.Direct port on the Cerbo.
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...
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...
Bit of a tangent since I'm mostly off-grid on the boat, but I watched this happen to my sister in Leeds.
@EmmaEdwards82 and @Tel1961 both touching on the right area — BMS identification is the crux of it.
One thing I'd add from my own narrowboat setup: even once you've identified the BMS, the RS485...
@Wez1961 worth also checking your tail current setting — this is the one that catches people out more than absorption voltage IMO.
@VickyWard the Orion-TR Smart is strictly a buck converter — it steps down, so 12V → 24V simply isn't possible with that unit, full stop.
@LochWalker classic Victron/BMS disconnect this — the BMV is measuring pack voltage and has no idea what's happening at cell level.
Few things worth checking:
Absorption time — is your charger...
Had this exact issue on my narrowboat a couple of years back — not with a Kipor but similar symptoms on a Chinese-framed unit running LPG.
Nine times out of ten it's one of three things:
Thermal...
Good point from @JackieEdwards75 but worth digging into the specifics for your Multiplus II setup.
The fireman's switch requirement under BS 7671 applies to high-voltage discharge lighting...
@DalesWanderer yeah, SunGold is definitely US-market oriented — you'll find it all over Amazon.com but UK availability is patchy at best.