Yes, it seems likely that it is to cram more charge in. We learned of it via the articles that viewtopic.php?f=31&t=21628 references. That might be responsible for a small part of the higher EPA range rating of the '13 to '15 24 kWh Leafs (84 miles at 100% instead of 73).
On the MY 11 and 12 cars a factor in the lower EPA rating was because for the test they had to show the 80% charge range result and not the 100% rate. With the 80% rate removed in 2013, then they could now list the higher range rate.
You got this completely wrong, making other info you provide suspect. The 80% charge limit (different from an 80% timer setting) was implemented
, the EPA lowered the range rating because of averaging in 2013
, and the 80% charge option, including 80% charge timer, was then removed in 2014
in the US. It was left in place in other countries.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.
The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.