Attached is comparison of both my 2013s. The Grey one has 70k miles and the Blue one 50k. Hasn't been much change in the AVG cell voltage or MIN and MAX cell voltage over the years.
Only strange stat is both the SOC measurements. When measure with a full charge but a few hours after it reached the full charge the SOCs drop. Keep in mind it still has a full charge just the SOC measurements drop. Curios.
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