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Zero Battery Degradation Replacements Giving Chevy Volts an Edge






General Motors can make a claim for its Chevy Volt battery pack that has eluded the competitive Nissan Leaf: there’s been zero battery degradation in the Volt.
That topic came up during a recent media tour of the GM Brownstown battery assembly plant near Detroit. Most of the attention during that trip was given to the wide selection of lithium-ion batteries GM is building for its electrified vehicle lineup.
While the second-generation Volt has a new battery pack that will carry it farther on battery power, GM is still building battery packs for the older, first-generation model. While the second-gen Volts are now being sold at Chevy dealerships, the first-gen battery is bring produced in Brownstown since GM is legally required to provide replacement parts under its battery warranty.
GM says that, so far, it has had to replace zero Volt battery packs due to what’s been defined as “general capacity degradation.”
In 2012, after reports of premature battery degradation in hot states for the Nissan Leaf, especially in Arizona, Texas, and California, Nissan upgraded its warranty to guaranty 70 percent charge holding capacity for five years and up to 60,000 miles. That made warranty programs for battery packs a hot topic for companies like Nissan, GM, and Tesla to market to car shoppers and safety regulators. It pushed the envelope out to 8 year/100,000 miles as the industry standard for lithium-ion battery packs in electric cars.

Battery storage has been one of the applications for Volt batteries that tap into the long-lasting durability. GM has used Volt batteries for a renewable energy storage project. The automaker is using a few of them at its Milford Proving Grounds in Michigan, where it will help supply power to its new Enterprise Data Center.

Launched in December 2010, the Chevy Volt has so far withstood the test of time in battery durability
 

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Hay Eddy nice write up about these new battery technologies !

How are these batteries fairing in the colder climates of the U.S. ?

Whom would know that a can opener will open up a blister pack of goodies ?
 

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Batteries tend to do better in colder temperatures. Heat kills a battery.
 

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GM says that, so far, it has had to replace zero Volt battery packs due to what’s been defined as “general capacity degradation.”
Sorry, the skeptic in me can think of reasons that have more to do with legalize than with battery quality. :grin:

But at least it suggests it's no worse than the others and isn't suffering from infant death or quality control problems.
 

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How are these batteries fairing in the colder climates of the U.S. ?
Electric range is greatly reduced in the winter, I believe this is part of the reason GM only sells the Electric Spark in California and Oregon. To quote part of the article below on the subject:

Nissan Leaf Owner: “We recently drove 19 miles one way on the freeway when it was minus 5. When we started out our range indicated 50 miles, but by the time we arrived we had only 12 miles of range and has used 9 of our 12 bars.”

Electric Car Drivers Report Impact from Extreme Cold | PluginCars.com
 

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Batteries (like me!) hate extremes in general. Extreme cold, extreme heat - perfect time for an old battery to leave you with that dreaded "click".
 

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Electric range is greatly reduced in the winter, I believe this is part of the reason GM only sells the Electric Spark in California and Oregon. To quote part of the article below on the subject:

Nissan Leaf Owner: “We recently drove 19 miles one way on the freeway when it was minus 5. When we started out our range indicated 50 miles, but by the time we arrived we had only 12 miles of range and has used 9 of our 12 bars.”

Electric Car Drivers Report Impact from Extreme Cold | PluginCars.com
The Spark EV is what's called a "Compliance Car". It's only being sold where GM needs to sell EVs in order to comply with a state law.
 
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