When Do Prius Batteries Have To Be Replaced. The cost of replacing your Prius battery will depend on the car model. If the battery ever did need to be replaced it would run between 2200 and 2600 from a Toyota dealer but its doubtful that anyone would purchase a new battery for such an old car.
Some say 140000 miles. If I do replace it it is recommended I do. Generally youll be looking at about 2400 - 2700 for a new Prius battery.
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You are correct the prius nickel metal hydride batteries last 100k-175k very rare they make it too 200k my prius hybrid battery failed at 147k. Replacing a hybrid battery in a Prius is one of the drawbacks to saving all that money on miles per gallon. You can look up Toyotas Web pages for details. I looked into this recently and to summarise what I found.
