When did your battery fail?

2004: no failure so far, currently at 170K miles

 

Build date - March 2005

217,500 miles and counting.

Monitoring HV battery block voltages daily with Torque app for android. No weak blocks (yet). Temperate climate, relatively flat terrain, and 20K miles per year use are helping to prolong HV battery life.

Of course, the traction battery could fail today. No surefire way of knowing when and where it will croak.

 

Bit of a loaded question if ever there was

 

2010 Prius / purchased new May 2009. approaching 112,000 miles. Oregon has a 150,000
mile warranty. So far the battery is functioning just like it was the first day we purchased the car.

 

If you ruled out (or at least put in a separate category) people how first sought out this site because they *already* had battery related problems, then you might end up with some kind of useful statistics on the current rate of battery failures. Given the loaded nature of the question however, even in that case the results would be extremely questionable.

If you're just looking for data on the battery lifetime then you have to understand that no matter how the survey is posed you are inherently only considering the earliest few percent of failures.

So sorry, but I can't see any meaningful statistics ever being drawn from this particular survey.

 

Which battery are you talking about ?
You know that every Prius has TWO......right ??

 

IMHO, if you want to learn anything from a poll on this topic, you should ask about life in years and not miles. Miles are totally irrelevant for HV battery. Case in point: the more hwy miles, the less work for the battery (unless one drives in hilly area).

 

No failure yet, but only at ~75K miles. Car was bought new in January 06.

 

I'd say how many 'hours' the car has been on rather than years or miles. 10 hours a day in slow, crawling traffic is going to be much harder than a 50 mile each way commute at 60 mph. Both cars could cover the same mileage in the same number of months.

 

can you give us any data on the 'significan't impact' of the battery? i thought they were being recycled and re used.

 

July 9, 2013 at 295,000 miles. Cause - lady ran a red light and TKO'd my 2004 blue prius.

Actually, the battery still worked, but the car was bent in a variety of unnatural ways.

 

Here is a link to results of a similar survey recently completed:

SUMMARY and CONCLUSIONS
It's time to sum up this Gen2 hybrid batt survey. The survey results are more useful than I first thought, when combined with Consumer Reports 2014 Auto Issue new data on Prius batteries.

• 126 responders
• 20 replaced batteries (18.9%)
• 14 of 20 replaced under 150,000 miles (70%) most of these probably under warranty
• Next survey we should ask how many of the replacements were under warranty

(see above post for more details)​

Read more: http://priuschat.com/threads/hybrid-battery-survey-gen2-prius-2004-2009.132362/page-6#ixzz2ys9lWC1X
Follow us: @PriusChat on Twitter | PriusChat on Facebook​

 

Is there any accurate resource on data re the traction battery life of the Gen 2 Prius. It is an interesting topic.

This week I have been reading in the forum about the battery pack, life of cells ... Way over my head but very appreciative of those with greater knowledge and experience taking the time to share.

Based on my reading, I did this morning pull out my battery fan and brushed off the accumulated dust and debris. In the next few days I will tape filter material over the vent grate.

 

Consumer Reports published Gen2 (and Gen1 and Gen3) batt life data a few months ago, which I presented in the prior survey posted above.

 

wjtracy, thank you. I had jumped there before, but this time I scrolled down and found your recap of the Consumer Reports info. I am bouncing around threads picking up ideas on ways to treat the battery pack to aviod problems for as long as possible.

I like my Prius. I like it every time I pull up to a gas pump.

It is not perfect. I have one issue I intend to attack soon, but what ten year old car doesn't?