@Wez1961 yeah duplicate title, doesn't matter.
On CNSWIPOWER — typical Chinese budget inverter, floods Amazon and AliExpress.
@Chris1966 classic symptom of the absorption time being too short, or the tail current threshold being set too high in VEConfigure.
With LFP you want to keep absorption quite short anyway, but...
@VanLee yes, Growatt SPF series definitely has some quirky charge management behaviour. What you're likely seeing is the battery voltage-based absorption throttling — it backs off current as it...
@Gill1982 assuming @HighlandExplorer has guessed correctly —
Worth clarifying which Multiplus-II variant you mean.
@Thommo9 know the feeling. My static caravan setup really struggles November through January — even with a decent Victron MPPT and 400W on the roof, some days you're getting practically nothing...
@CamperShaun that Fogstar Drift experience is a common one — the BMS disconnect catches people off guard the first time.
Worth adding from my own static caravan setup: if you're running an older...
Good points from both above. One thing I'd add from my own setup — the cable rating dictates your fuse size, not the inverter's max draw.
@Del the dynamic current limiter via VE.Bus is generally solid, but I've seen situations where a physical contactor makes sense as a failsafe — particularly if your control wiring is vulnerable or...
@SophieHobbs74 Classic inrush current problem. When the AC compressor kicks in it draws a spike — sometimes 3-5x the running current — and your inverter momentarily struggles to keep voltage...
@OffGridHamish I know that feeling. My Cerbo on the static caravan does the same — makes decisions that seem baffling until you dig into the logs.
A few things worth checking:
VRM Portal →...
@ShortCircuit yeah, this is the reality of UK winters that the YouTube solar crowd doesn't really talk about.
Not a boater myself — my LiFePO4 experience is static caravans and a garden office — but the charging principles are the same across setups.
One thing worth flagging that I haven't seen mentioned:...
@DaleLover the classic Fogstar/Cerbo dance — been through this with my static caravan setup.
Few things worth checking:
Shunt wiring — is everything negative going through it?
@VanBarry The relay works, but it's a blunt instrument. It'll connect your leisure battery directly to the vehicle battery, which means if your leisure bank is heavily depleted, you're hammering...
@LiamWalker you've cut off mid-sentence so hard to know exactly what readings you're seeing, but a few common gotchas with the DCC40S:
Input voltage drop — the unit pulls hard on the alternator...
