I have a 2012 silver SL , 43K miles, 7 bars left ; leaf spy says 50% SOH.
Update: The dealer just called me after Nissan CS talked to them and they said they can do the swap for $5500 all in. I asked them what part number they will put in and they had no answer. So if Nissan confirms the right chemistry , then I will be going for it.
Replacing cells? What model year do you have? Cell warranty (defects) should be free (warranty) on everything but 2012's and high mileage (8 year, 100k miles). If you have a 2011/2012 battery, you'd probably be better off just buying a whole new battery for 5.5k at this point, because then you'll get the latest chemistry, a new warranty, and much better range.