It seems that battery pack replacement for Prius models is relatively rare. They are covered by a 100,000 mile or 8 year warranty. but just in case the worst happens here is what green cars not come has to offer:
Should worst come to worst and your battery need replacement, there’s one final silver lining from Toyota, known as “core credit”.
This is a sum deducted from the new battery pack MSRP for returning the old battery to be recycled. That’s not only better for the environment than the battery being thrown away when it gets replaced, but in a car like the Prius, it reduces the cost of a new battery by around a third.
The only additional cost is that of labor, which varies between cars, and labor rates which vary depending on where you live.
Good to know. Stay green,