There will of course be a newer battery tech, and Perodua will be dumb to not sell it to existing customers. QV-E now has a 445KM NEDC (LOL) range... After 9 years probably be about 360KM or so.

New battery will probably get you up to 500km++ NEDC range, heck maybe 600km++, so owners will thinks it's a must have upgrade.

And Perodua will ofcourse want another 9 years lease on the new battery.

And because it's using a slightly different connector and stuff, there's a one time few of probably few thousand to rework the car.

But wait, the new batter allows for 0-80% charge within 3 minutes, but QV-E's onboard systems can't support that. So they're gonna offer you a DC Charging rate upgrade for another couple thou.