I purchased the LEAF SL model with all options in April 2012.
So the 12volt battery was due for replacement.
Up next is brake fluid change, and inverter cooling pump 2 is starting to go. That is the yellow intermittent light on your old LEAF dashboards.
I will be trading this in on a Model 3 as soon as mine is made.
Just want my LEAF it in good shape for max trade in value.