How many Ah did my cells drift in 1.5 years? And what has the balancer done during this time?

I'm trying to find out what the actual cell drift is, since we have installed the battery shelf 1.5 years ago. As announced in the last video, I'm now charging my batteries to a higher voltage to find out, if the batteries would be balanced even with only a passive balancer. So, with that in mind, I'm charging the pack until the first cell hits 3.65V. Now, I'm charging only the cell with the lowest voltage also to 3.65V and measure the Ah necessary to get there. This is the cell drift since installation of the battery, the balancer could not balance. Some simple maths, and we could also calculate the overall cell drift if no balancer would be installed. The result surprised me!
I also had a look in the VRM history and found the days, I had fully charged the battery. A shocking low number, I must admit. And this is maybe the reason why my balancing is a bit... off.

ZKETech EBC-A40L Battery Tester. Best cell tester on the market!
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https://youtu.be/eShwpmDPETk

Something wrong in the battery shelf! Or just 'bad' settings?
https://youtu.be/kGhHD-0iELM

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Видео How many Ah did my cells drift in 1.5 years? And what has the balancer done during this time? канала Off-Grid Garage