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battery factory grant is 10 years. I think you can be happy within 10 years.

Umm, not quite. Warrenty coverage and life are two different things. Your car doesnt die after the 3 year warrenty ends, neither does the Toyota Prius Batteries. The fact is no Prius batteries have been replaced due to them dying. Replacement has occured due to accidents and defective batteries however. The Prius battery is NOT one big battery it is a battery made up of 12 units, so if one should fail they would just replace that unit. You should expect the batteries to last over 15 years. Warrenty on the Batteries is 8 years or 100k except in California where I believe is is 10k years 150k.

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Q: How often does a Toyota Prius battery need to be replaced?
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How often do i need to change the battery for a Toyota Prius?

Since 1998 no Prius have had battery replacement due to "wearing out". So far only accidents or defective batteries have been replaced. Keep in mind the Prius does not use one big battery either, instead it is 10 or 12 smaller batteries in a long casing. If one should deplead they would just replace that unit. Toyota expected the batteries to last 8-10 years but are now finding out they will last much longer. They only way to really test it is to let time go buy and see.


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There are two different batteries in the Toyota Prius. There is a small 12 volt battery used for powering up the computer and powering the 12 volt accessories in the car. The other is the high voltage battery. The small 12 volt battery lasts on average 4 or 5 years. This battery is usually trouble free, unless you don't drive your prius very much. I believe these run around $150 USD. The lifespan of the high voltage battery varies. I saw one go bad at around 90,000 miles. Another prius made 150,000 on its high voltage battery. Expect to pay about $3,500 USD for one of these. Both of these batteries can only be purchased at your local Toyota dealer.


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