AC current exactly the same, voltage drop on the cable is very low, i think its near to sensitivity of my measurement devices.
I tried to measure battery internal impedance with Fnirsi HRM-10, but it cannot measure it, values change between 0 and 2mOhm. But I think can be effect of BMS, can it ?
As to be expected, but Iâd like to see the ac voltage.
On the scope you had 0.95 pp, now you should be under 0.25 and everything is fine.
Yes, you are right. Itâs even lower.
But the questions is still the currents. My initial question was is it normal when working with inverter?
The current just tells you that the inverter is using the battery as capacitor to smooth the ac curve.
That should be a normal value, maybe one of the Victron guys here can comment on that.
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This is the question, because there definitely shall be some in capacitor at scheme and this can not be good for battery?!
Something wrong with settings?
I think this is all normal behavior, nothing to worry about.
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Is there some way to get official comment from Victron?
Because i got following answer from dealer âThat is definetly not normal, I canât provide a solution there because I never heard of that problemâ.
Ripple is specified in mV, not Amperes, so there is no reference.
And ofc he never heard anything about it : its NOT a problem.
Its at 102 hz so is at the switching frequency of the mosfet or igbts in the inverter.
Is the scope in AC coupling mode so it can filter out the DC?
SO SORRYâŚ
Its neither Megahertz nor millihertz, but just pure hertz, twice the grid frequency, nothing to worry about.
Ah kak. Missed the typo. Thank you ludo. Fixed it.
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Yes, you can see photos of both AC and DC filtering.
AFAIK, this would be the inverter using the DC side as a capacitor to smooth out its operation. It shouldnât cause any damage to the battery, since itâs way below its current limits. While youâre at it, you should also examine on what will happen at 100% battery SoC, when the internal BMS will potentially cut the cells from the load. I would expect the ripple to grow exponentially.
I believe the bms will not cut off at 100%, only if you try to go higher 
Most LFP batteries are badly balanced and they donât charge all the way to full voltage. They need a few months to properly equalize.
Got confirmation from my dealer, that this behavior is usual.
But there is capacitor? Why it use a battery? Isnât installed capacitance sufficient?
The battery is always installed, why NOT use it to make the mp smaller and cheaper ?
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