In the ESS System, when there is a stable situation with enogh exceeding energy - Bulk Charging is working well – but as soon as the batteries are sufficiently charged to switch to absorption, the Multiplus is flapping between absorption and inverter (discharge) mode in changing intervals of 10sec to 1 minute and with changing amplitudes up to +/- 10 Amps. I would expect a stable absorption mode with constant voltage and decreasing current for the configured absorption time of 2 hours – but no negative current at all.
I already have posted the problem in german language "ESS springt zwischen Absorption und Discharge alle paar Sekunden" but unfortunately no solution yet and therefore i repost in english language and with extended documentation.
I have done a lot of measurements and tests - see attached documentation also including configuration parameters. 2022 01 14 Absorbtion Problem Doku.pdf
Looking forward to your recommendations - Manfred