I've heard battery pack replacement rumours on the web range from $2,000 to over $9,000.

I believe it is around $3,500.

Honda's standard Hybrid warranty is 36,000 / 3 years on the drivetrain and 70,000 / 7 years battery. I've spent the extra $900 on an extended warranty which covers 7 years / 100,000 miles on the drivetrain and 10 years/150,000 battery.

I keep my cars for 10 years, and at that time I'll have about 300,000 miles on my HCH. I do expect the battery pack to go flat. What will I do then?

1. Drive the car with reduced performance.
2. Check junk yards for guaranteed used packs at a discount.
3. Since the pack consists of ~144 "D" size batteries it is feasable to replace only defective cells.
4. Buy a new pack. But this expense wouldn't make much sence with a high milage car.