Almost lost it! Why just an active balancer is not enough!

The BMS disconnected several times! Saved the battery. Just because the active balancer was too slow and could not keep up. I share my findings and thoughts with this situation occurred last weekend. I was really happy with the active balancer until this moment. It seems like, it has still trouble to catch up with the demand of pushing amps back and forward in such a high capacity setup. Luckily the BMS was there and disconnected the battery once one cell hit 3.65V.
It was a bit disappointing to see that the active balancer was struggling to prevent the BMS from disconnecting the battery several times. The balance currents just were not large enough to make a difference while still charging the cells at the same time with 20A.
I probably have to give the system more time to top balance now and need to increase the absorption voltage slowly so the balancer can keep up. It's still not an ideal solution... Also, the absorption voltage was set to 3.45V only which means there is still a lot of energy to be 'balanced' across the cells until the voltage moves. We're still in the flatter area of the curve. It is more beneficial if the cell voltage is higher and amps moved have a bigger impact on the cell voltage. I'll keep testing....

Testing the difference of charging to 3.4V and 3.5V with and without Absorption.
https://youtu.be/pijPu7t-akM

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Видео Almost lost it! Why just an active balancer is not enough! канала Off-Grid Garage