Electric car Leaf's battery 'can be used at home'

Dec 17, 2010

Renault-Nissan boss Carlos Ghosn has suggested that an electric car's rechargeable battery could be used in the home long after the vehicle has died.

Ghosn made the claim in Tokyo Thursday ahead of the Japanese launch in the new year of Nissan’s Leaf, an all-electric car for the mass market.

He said the in the Leaf -- expected to last 10 years -- would have a lifespan "almost beyond that of the car", referring to the fact that the average duration of use of the car was expected to be shorter.

"You can reuse it after in your home," said Ghosn, who is chief executive of Nissan and its partner Renault, tied through cross-shareholdings.

Ghosn said Nissan had formed a joint venture with trading house Sumitomo. "It will buy used batteries to sell to individuals" to use in their homes for domestic applications.

, 45 percent of which is owned by Renault, relies heavily on its electric car business, in which it has already invested more than four billion euros (five billion dollars).

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1.2 / 5 (5) Dec 17, 2010
I hope Ghosn means that the battery is taken apart, and the contents, which hopefully are AA batteries, can be sold as second-hand to households.

I can se no way a private household would buy an entire car battery for any purpose, especially if it only has a few years left of its 10-year lifetime.

But even then, this is an unstable proposition. By the time most people drive electric cars, there will be an entire car battery's worth of AA batteries every few years per car-using household. People would get swamped in batteries, even if non-driving households bought them, too.

There is no other long term choice that to recycle the batteries. They have to be built so that they are easy to recycle. We've already seen it works with laser printer cartridges.
5 / 5 (4) Dec 17, 2010
I can se no way a private household would buy an entire car battery for any purpose, especially if it only has a few years left of its 10-year lifetime.
I can already think of uses. Emergency lighting, solar power storage, generator feed conditioner, etc. There's many uses.
5 / 5 (4) Dec 17, 2010
How about a UPS for the entire house,similar to what I have my computer plugged into?
not rated yet Dec 18, 2010
@ gwrede:
You have solidly misunderstood what Ghosn actually meant.
When a battery becomes unusable for a car, it has lost capacity after many years of usage and suffers range which cannot be tolerated. Although the battery is no longer suited for EV application, it can still perform for many more years in other applications; e. g. as a storage and buffer unit in a PV-system or as an emergency PSU. Because the battery is not suited anymore for the expected demands of an EV does not necessarily mean it has become obsolete. A battery that has endured a capacity loss of maybe 50 or 60% can still be helpful for many other uses.
not rated yet Jan 25, 2011
they are actually getting cooler!
not rated yet Jan 28, 2011
This brings to mind the chap who powered his house with his Prius after an ice-storm knocked out power to his area.Google:"Prius: It’s Not Just a Car, It’s an Emergency Generator"

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