Thanks for the confirmation.
The good news is that the Leaf doesn't use LiFePO4. It might be better to move the CALB stuff to another thread.
The fact remains that lithium - and especially LiMn and LiCo - can be capacity balanced throughout the entire charge/discharge curve because of the sloped curve. This means that the Leaf doesn't have to wait to balance until the end of charge and comments about waiting until 80+ percent are irrelevant.
I'm not sure I confirmed what you are suggesting. The point is that with LiFePO4 you really aren't doing much balancing at 3.4V since SOC can still differ. You need to get further into the end of the charge curve. Balancing is getting cells to the same SOC. Since 3.4V is not accurately representative of SOC at that point you aren't really balancing. They may get closer but it may not be close enough.
What you suggest about the LiMn LEAF pack having a steeper curve may be true, but I have yet to see a charge curve for the LEAF pack.
I'm not the only one questioning your assertion: http://www.mynissanleaf.com/viewtopic.php?f=27&t=2746&p=69018#p69018
Finally, 80% charging is not really at 80% SOC since Nissan limits the usable size of the pack. Charging at "80%" may actually be charging at closer to 70% since the full pack capacity is not accessed.