lorenfb wrote:No. Most OEMs don't provide an ongoing warranty once they've complied with the original new car warranty. Obviously, each OEM can differ with this, but it would be very costly in the long run. So to clarify my statement; If Nissan sells an out-right purchase of a replacement battery (either 24 or 30kWh) they will provide the same warranty whether it's just one year (like any replacement part) or a "like new vehicle" warranty of 5 years & 60K miles (unlikely). Obviously, if the battery fails again within the same original 60K period, it's a no cost replacement. Typically OEMs don't provide open-ended warranties. Nissan could reasonably state that a 30kWh battery would not be considered as the normal replacement part but an optional type of replacement part and only warranty it for one year. I doubt that there's any specific law or guidelines relating to that issue and the OEM is not obligated to any specific warranty. The same issue can be rationalized when an ICE is warranty replaced in an ICEV, i.e. the same logic could apply for a battery.
It sounds like you are just making stuff up as regards to the Nissan LEAF. I'm specifically talking about the "Nissan LEAF Li-Ion Battery Assurance Limited Warranty" that Nissan provides to owners when they purchase a new Li-ion battery. For the 24-kWh batteries, that warranty is for 8 years and 100,000 miles for materials and workmanship and for 5 years and 60,000 miles for gradual capacity loss.
The question is how long the warrant period is for gradual capacity loss on the 30-kWh battery. Random speculation is not really useful here.
All that was provided was based on your having purchased a replacement battery for your present old Leaf, i.e. a 24 kWh or 30 kWh battery.
The warranty possibilities are either that the purchase is considered as a typical vehicle part replacement which has a one year warranty,
or Nissan provides a non-standard part replacement warranty (like a new vehicle - 5yrs, X miles, etc.). Nissan may become benevolent with
regards to this and assume continued liability for your replacement batteries. I doubt that Nissan has really established a policy as yet.
So maybe you should contact Nissan corporate and eliminate any speculation. There're only two outcomes to the issue and guessing
in this thread won't resolve it.