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Summary:

General Motors pulled back the curtain today on the warranty for the most expensive piece of its upcoming Chevy Volt: the lithium-ion battery. GM said today it will guarantee the battery for eight years or 100,000 miles, a fair stretch longer than the standard.

UPDATED General Motors pulled back the curtain today on the warranty for the most expensive piece of its upcoming Chevy Volt: the lithium-ion battery. GM said today it will guarantee the battery for eight years or 100,000 miles, a fair stretch longer than the standard five years or 100,000 miles for the automaker’s gas engines and transmissions.

GM said today that the warranty will cover all 161 components of the battery in the extended-range electric Volt, as well as the thermal management system, charging system and electric drive components.

Micky Bly, GM executive director of Global Electrical Systems, spoke to reporters today on a call about the hearts, brains and muscles of the Volt, saying the battery is “undoubtedly” the heart. After years of development, testing and validation of the battery — from water submersion to aggressive driving cycles to extreme temperature swings — Bly said GM is “backing up” its confidence in the pack with the industry’s “most aggressive, comprehensive battery warranty program for a mass market electric vehicle.”

Under California vehicle emissions regulations (also used by 16 other states), plug-in hybrid and extended-range electric vehicles like the Volt have to carry a minimum 10-year, 150,000-mile battery warranty in order to be designated as partial zero emission vehicles (PZEV) – a high standard that Jay Cole over on the Nissan-LEAF blog has likened this to “telling your kids to go practice playing catch out in the yard with a raw egg…at some point, that egg is going to get broken.”

However, under the final rulemaking issued by the EPA in May for new national vehicle emission standards, (starting with the 2012 model year), “emission-related components on advanced technology vehicles,” including batteries in hybrid electric vehicles, will be required to carry only an 8-year, 80,000-mile defect warranty.

Update: GM tells us that in order to meet its “aggressive program timing” for the Volt launch, it “chose to hit calibration and regulatory targets for nationwide availability beginning later this year.” Down the road, however, the automaker plans to expand the warranty. Starting in mid-2012, GM tells us it expects to meet the California standard for what are designated as “enhanced advanced technology partial zero emission vehicles,” or enhanced AT PZEV. According to GM, “At that time, the battery will receive a 10-year/150,000 mile warranty.”

What’s the big deal with qualifying as an enhanced AT PZEV? Cars in this category can be used to meet up to 70 percent of the production requirements for zero emission vehicles under California regulations between 2012 and 2014, and half of the requirements for 2015-2017.

Image courtesy of GM

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  1. Awesome on the reliability, I hope the price is good too.

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    1. well, that would depend on your definition of “good” ;-)

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  2. Lawrence Weisdorn Wednesday, July 14, 2010

    I have heard that a state of the art battery management system will extend the life expectancy of the lithium ion battery pack significantly. An 8 year warranty is definitely significant!

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  3. [...] GM Unveils 8-Year Chevy Volt Battery Warranty [...]

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  4. This is good news for those considering the Volt. Tesla – the only semi-volume EV to be marketed recently has only a 3 year/36,000 mile warranty standard. Tesla offers an extended warranty at extra cost. Then again, the Tesla is $100,000+. The phrasing of the warranty language will be important. Also, how will the battery be pro-rated?

    While Nissan has not provided any warranty info on the upcoming LEAF yet, they have said that they expect battery life of 10 years, with 70-80% of capacity remaining at that point. Nissan is also evaluating alternative “second lives” for these batteries, providing energy storage for certain non-automotive applications. This should increase the value of these 10 year old batteries. These statements may provide a clue as to Nissan’s battery warranty, when it is announced. Batteries are the single most expensive component of the Volt and the LEAF. It is hoped that technological improvements and manufacturing efficiencies will lower the price of replacement batteries in 10 years.

    If you have an interest in the Nissan LEAF, please visit http://livingleaf.info. Living LEAF is a consumer oriented, San Diego based website seeking to answer this question – Is the Nissan LEAF right for me?

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  5. [...] A whole lot of question marks, and a few early data points. On Wednesday, GM announced that the earliest Chevy Volt models will carry an 8-year, 100,000-mile warranty on all 161 components of the battery, as well as the thermal management system, charging system and [...]

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  6. [...] for as long as possible, in part by collecting and refurbishing used batteries. Earlier this month GM unveiled an 8-year, 100,000-mile warranty on the battery pack, and on Monday DiSalle said the pack should retain about [...]

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  7. [...] Jul. 27, 2010, 2:41pm PDT No Comments       Hot on the heels of General Motors unveiling an 8-year, 100,000-mile warranty for its upcoming Chevy Volt, Nissan announced today at the Plug-in 2010 conference in San Jose, [...]

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  8. Bethany Schempp Thursday, December 16, 2010

    Has anyone asked and had answered how much a replacement battery is? My guess is that it won’t be in the Sears autocenter and that it will be more than 3 figures.

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