Over the weekend I took measurements on 4 cells.
Cells 1, 2, 3, are old (50% of the pack).
4 cells from a current car, 70% charged.
Results.
All cells charged to 4,1V, loaded with 15A, discharged to 2,8V:
1: 62,1Wh 16910mAh time 1:07:24
2: 38,7Wh 10754mAh time 0:43:01
3: 47,3Wh 12800mAh time...