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The problem is likely Nissan's air cooling system used for the Leaf's battery

The Nissan Leaf is a top player in the electric vehicle (EV) industry, but one major issue that sometimes plagues these vehicles is the battery -- and the Leaf's battey seems to be taking a lot of heat.

Leaf owners in Arizona have recently complained that their EVs are losing significant capacity in the desert's hot heat. In fact, Arizona Leaf drivers Scott Yarosh and Mason Convey have both testified to this claim.

"When I first purchased the vehicle, I could drive to and from work on a single charge, approximately 90 miles round trip," said Yarosh. "[Now] I can drive approximately 44 miles on this without having to stop and charge."

Both owners said they've lost about 30 percent of their battery capacity since purchasing their vehicles. Even when their batteries are fully charged, two to three of the 12 lights on their battery capacity gauge are out.

Both owners are very meticulous about how they care for their Leafs. There is absolutely no sign of abuse, as both were able to produce dealership service records with high marks.

"We want to learn more about what's going on, but it's something we've just been made aware of, and we don't have any conclusions yet," said Perry.

The problem is likely Nissan's air cooling system used for the Leaf's battery. Tesla CEO Elon Musk even predicted that Nissan's cooling system would fail the Leaf at some point back in August of 2010.


Musk said that Nissan's Leaf employed a cheaper air cooling system that would make its battery temperatures jump "all over the place," where cold temperatures would degrade the battery while hot temperatures would shut it down. Tesla, on the other hand, uses a high-end liquid heating/cooling thermal management solution.

But for those who are still avid Leaf fans, there's great news if you live in California or Washington. Dealerships in these two states are cutting about $5,000 off the price tag for a new 2012 Nissan Leaf. The MSRP is usually $37,250, but with the $7,500 federal tax credit, the $2,500 California clean-vehicle purchase rebate, and now the additional $5,000 off, the price for a brand-new 2012 Leaf is only about $23,000.

Sources: CBS 5, Green Car Reports



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RE: What a deal!
By Dr. Kenneth Noisewater on 7/21/2012 10:52:14 AM , Rating: 2
Fast charges degrade the battery and require rather a large electric circuit, and at this point outside of a few subsidized public locations or corporate lots the only ChaDeMo chargers I'm aware of are at Nissan dealers.

Me, I'd rather see production solid oxide fuel cells that can run on gasoline, diesel, LNG, et al. incorporated into cars with electric powertrains. A SOFC that has 50+% conversion efficiency coupled with an 80+% electric powertrain could squeeze double or more the range out of a gallon of gas, and have the electric powertrain benefits (simplicity, robustness, reliability, weight savings) along with the benefits of hydrocarbon fuel (energy density, mature/robust infrastructure, consumer acceptance).


RE: What a deal!
By lexluthermiester on 7/23/2012 11:13:49 PM , Rating: 2
SOFC's are very expensive, and for a full size sedan can cost in the area of $9000. However, your point is very valid in that the SOFC is much better the full EV's battery system.


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