Symptoms of a dying battery... - GreenHybrid - Hybrid Cars


HCH II-Specific Discussions Model Years 2006-2011

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Old 08-10-2006, 01:43 PM
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Default Symptoms of a dying battery...

What are the symptoms of a battery that needs to be replaced?

Has anyone either experienced or heard of anyone experiencing the need for a replacement on the new HCHII's yet?

What's the best guess about how far they'll go (in terms of mileage)?

I'm just looking for a bit of knowledge for future use here. I've got 3,000 miles on mine now and average 52 mpg...couldn't be happier!
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Old 08-10-2006, 02:12 PM
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Default Re: Symptoms of a dying battery...

Jordan,

Battery failures have been very rare in any hybrid and the manufacturers (Honda and Toyota) have been very good about backing them up at little or no cost to the owner. There are some symptoms you can look for that would indicate a weakening traction battery:

1 - You MPG will slowly drop with no other explanation.

2 - If you can determine the State-Of-Charge in you HCH (It is displayed in a Prius), put a known electrical load (I use my Thermoelectric cooler - 4 amps at 12 v) on the car in ready mode and see how quickly the SOC drops (the engine should start to recharge it as required). If the battery is weakening, the SOC will drop faster under the same conditions.

Your battery should last longer than many of the other components of your car. I expect to go more than 200,000 miles in my Prius (2004 - 64,000 miles to date) without seeing appreciable degredation.

JeffD
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Old 08-10-2006, 02:25 PM
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Default Re: Symptoms of a dying battery...

There have been no reports of dying batteries on Honda or Toyota products. The manufacturers expect them to last the useable life of the car.

Keep in mind that your battery is backed up by a 8 year / 80,000 Honda (100,000 Toyota) warranty and, if you are lucky enough to live in one of several states which have special PZEV laws, a 10 years / 150,000 mile warranty.

This is longer than any other component in the car.
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Old 08-10-2006, 04:17 PM
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Default Re: Symptoms of a dying battery...

Folks might want to look at this thread (http://www.greenhybrid.com/discuss/w...anty.2817.html) in the Insight forum
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Old 08-10-2006, 04:20 PM
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Default Re: Symptoms of a dying battery...

Alas, Jordan is not one of the lucky ones. I believe he's from Illinois. The "lucky states" are CA, ME, MA, NH, VT, CT and NY.
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Old 08-10-2006, 04:39 PM
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Default Re: Symptoms of a dying battery...

Hmmmm...what if I could convince my wife to move to one of those states. Do I get the deal then?
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Old 08-10-2006, 06:31 PM
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Default Re: Symptoms of a dying battery...

The only hybrid for which I've really heard of battery failures is the early Insight, which was Honda's first so there were a few hiccups with the battery management. That said, the most commonly reported symptom that I've read about is frequent recals, during which the battery SOC drops precipitously and then is force charged. It seems that if that happens with increasing frequency, you can expect an IMA light which will indicate system problems and probable battery replacment. Keep in mind that this is not personal experience, but information I've gleaned from spending far more time than I ought to surfing this and other forums.
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Old 08-10-2006, 07:19 PM
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Default Re: Symptoms of a dying battery...

Jordan, you won't. The warranty "enhancement" only takes effect if you buy from one of the CARB states, and possibly if you live there as well. So I can't, for instance, jump over to NY to buy my car and expect the better warranty when I actually live in, and will get tags from, Ohio.
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  #9  
Old 08-10-2006, 07:53 PM
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Default Re: Symptoms of a dying battery...

Well, I guess I can cancel the U-Haul reservation.
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