Toyota Motor Corp study finds Prius batteries still working after ten years, 400K miles.

[Rybold]

"A Prius battery pack could last as much as 400,000 miles with minimal maintenance issues, according to an independent study conducted by Toyota Motor Company. The study also found that many of the first-generation Toyota Prius hybrids are still running with more than 200,000 miles with their original battery packs. This study is quite interesting and it does squash any rumors that the Toyota hybrid will need its batteries replaced every five years, as most critics speculate.
The study also found a few cars in Victoria, B.C., that are still used as a taxi service. These vehicles have between 300,000 to 400,000 miles on them and are still using the same batteries installed since 2001....

Toyota provides a full warranty on their hybrid batteries for up to 10 years or 150,000 miles....

Prius Battery Pack Will Last 10 Years - Toyota Prius Battery - NewsOXY

(does anyone have a link to the official report?)

[Shawn Clark]

Ideal would be outlasting the engine and transaxle. I suspect the battery longevity depends very much on conditions plus time...not to mention luck of the draw. If the HV battery experiences high amp draws, extreme temps, and/or high/low levels of charge regularly then it would be unlikely to last as long as one that rarely did much more than provide a little push and regen.

I've seen a thread or two about folks in specific situations where the battery seemed to suffer premature failure (daily extreme charge/discharge in the mountains for example.) If one was doing full throttle acceleration to interstate speeds regularly then hard braking I would expect the high amp discharge/regen as well as the range of depletion/charge to be an order of magnitude more detrimental to the battery than a typical commute or highway drive.

I see a few GenII Prius yellowcab taxis locally on the highway from time to time. Haven't had the opportunity to speak with the operators yet.

[bedrock8x]

I can't wait to hear from Toyota that the Li ion pack will last 10 years and 150K miles.

[DeadPhish]

Originally Posted by bedrock8x

I can't wait to hear from Toyota that the Li ion pack will last 10 years and 150K miles.

According to the article last week Toyota can't promise anything near that longevity right now. They like Nissan and GM are expecting that the Li-Ions will have to be replaced at sometime during a vehicle's expected life.

[Flying White Dutchman]

Originally Posted by DeadPhish

According to the article last week Toyota can't promise anything near that longevity right now. They like Nissan and GM are expecting that the Li-Ions will have to be replaced at sometime during a vehicle's expected life.

that would happen with every battery type on the market today
litium basis is not the battery type of the future but one of today.
and you will always have to replace a battery at some point.

there are other battery type's being develeped that have far greater capacity then litium ion typ's but do not expect them on the market the next 10 years.
i am talking about litium( and other chemistry)-air battery
+1000Wh/Kg energy

[hill]

Art Spinella ... get your fingers out of your ears



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