After 9 years lease ended , do i need to continue paying for another fresh new 9 year lease ?

No. You can drive as usual and pay nothing on battery lease after 9 years.

You have a choice for new 9 years lease if you need a new battery replacement.
What happens if the battery fails at year 12 and the 9 years lease ended 3 years ago without extending it ?

You can return to Perodua at anytime for new 9 years lease whenever you need a new battery replacement.
Do i need to restart another new 9 years lease , if the battery fails and got replaced within the 9 years lease ?

No. Original lease term resumes for battery replaced under warranty claim.

New 9 years lease required for battery replaced under user's fault or terms violation , eg. accident damage / ride-hailing.
If i sold the car at year 5 , do i still need to pay the balance of lease for remaining 4 years ?

No. The new owner / buyer will takeover the lease.
If i sold the car after 9 years lease ended without extending it , does buyer have to enter new 9 years lease just to buy the car ?

No. New owner can drive as usual and pay nothing on battery lease if there isn't one.

They have a choice for new 9 years lease if they need a new battery replacement.
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