Don wrote:No - The car comes with a 10 year, 100,000 mile battery warranty. Your new battery will have a few years left and/or another 61,000 miles
I respectfully disagree, the battery like any new part warranty, should cover from the date of installation. But this could be wrong.
Any warranty is on the car, not the individual part, unless otherwise stated (which is extremely uncommon for cars), or the part is separately warranted by another warranty.
Hence if you had a traction battery replaced after 99,999 miles, the replacement in theory would be warranted for 1 mile. That's the typical Tc and Cs.