Nissan Leaf Battery Can't Take Arizona Heat, Dealerships Knocking $5,000 Off Price
July 19, 2012 11:40 AM
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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.
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RE: *chirp* *chirp* *chirp*
7/19/2012 8:54:13 PM
While the Leaf's battery may hold up significantly better in less hot regions, it's important to remember the real problem reported here is that the Leaf's battery is losing more than -15%- of its rated capacity in under a year of use.
If the same trend continues for these regions, the Battery pack would have less than 50% of its capacity left after 5 years and only 27% at the end of 8 years.
The other regions (Outside Arizona, Texas, etc), while not having significant numbers of capacity loss report yet,
be experiencing capacity loss faster than expected. Since the Leaf doesn't indicate the capacity loss until it hits
you as an owner would not know for sure unless you carefully track daily mileage predictions versus energy expenditure.
Nissan predicted a linear adjusted loss rate of ~5% per year. You may be losing 8% per year and not be informed for 2+ years, but the difference between 5% per year and 8% per year is fairly significant. In the 5% per year senario it takes 8 years to pass a 50 mile range. At 8%, you pass the 50 mile range at 5 years.
All in all, I would be very concerned if I was a Leaf owner. 15%+ is a very significant loss and creates reasonable concern that any higher temperatures/low temperate situations will result in faster degradation than the 5% predicted by Nissan.
RE: *chirp* *chirp* *chirp*
7/19/2012 8:58:48 PM
Link for Capacity Indicators.
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