[EVDL] EVLN: Peugeot Dealer debunks EV-battery-fade theory

[brucedp5 via EV]

http://www.businesscar.co.uk/news/2014/dealer-debunks-battery-fade-theory
Dealer debunks battery fade theory
Date: 25 July 2014  |  Jack Carfrae

A two-year trial of electric vehicles by a car dealer group claims to have
disproved the theory that EV batteries lose their efficiency over time.

Simon Bailes Peugeot ran a fleet of 20 electric Peugeot Ions over a
collective 200,000 miles and reported efficiency ratings in excess of 99%
from the vehicles' batteries.

The cars were provided to local companies and organisations on a rental
basis for six-month periods 

and fitted with loggers, which recorded exact details of journeys, charges
and other information.  

The data was sent back to Peugeot for analysis at the end of each year of
the trial, which revealed a degradation of less than 1% in battery
efficiency. The data was also analysed after a third year, which produced
the same result and runs contrary to the commonly held theory that EV
batteries lose significant amounts of efficiency with time and use.

Group founder Simon Bailes told BusinessCar: "We ran the tests at the end of
the first, second and third years - the trial was for two years but we ran
the test again after three - and the results showed less than 1%
degradation. Everything we've got suggests these batteries are going to last
10 years."

Organisations that took part in the scheme included Northumberland Police,
Sage, the Forestry Commission, Virgin Money and various local authorities. 

Bailes continued: "Every journey was recorded, every piece of topography was
recorded. We recorded all types of charges, fast and slow. These people were
paying for the use of them in the form of rental, so it wasn't a voluntary
trial, and some of the cars did 20,000 miles. The data proves the sceptics
wrong.

Battery issues have always been a primary concern and are the most common
question we get asked about EVs, but now we have strong, thoroughly tested
evidence that shows this should no longer be a concern. 

"These results are staggering as battery life is even better than we could
have predicted. I believe this is a massive step forward for EV use."

The dealer group's trial was part of a broader project known as Switch EV,
which saw other organisations conducting similar programmes. 

The project, which is funded by the Technology Strategy Board and managed by
North-East-based Future Transport Systems, has seen 44 EVs cover 403,000
miles and claims to have saved 76,000kg of CO2.
[© businesscar.co.uk]




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{brucedp.150m.com}



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Re: [EVDL] EVLN: Peugeot Dealer debunks EV-battery-fade theory

[EVDL Administrator via EV]

On 1 Aug 2014 at 3:29, brucedp5 via EV wrote:

> A two-year trial of electric vehicles by a car dealer group claims to have
> disproved the theory that EV batteries lose their efficiency over time.

How many people really worry about loss of efficiency?  The main concern for 
most is a loss of >capacity<.  

This strikes me as deception by distraction.

Lee's signature defining research applies equally to PR : "Shoot the arrow 
first, and paint the target around where it lands."

David Roden - Akron, Ohio, USA
EVDL Administrator

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Re: [EVDL] EVLN: Peugeot Dealer debunks EV-battery-fade theory

[Mike Nickerson via EV]

As I was reading the article, I assumed that the author meant capacity, but 
wasn't familiar enough with the terminology to get the words right.  Never can 
tell, though.

Mike


On August 1, 2014 11:54:55 AM MDT, EVDL Administrator via EV 
 wrote:
>On 1 Aug 2014 at 3:29, brucedp5 via EV wrote:
>
>> A two-year trial of electric vehicles by a car dealer group claims to
>have
>> disproved the theory that EV batteries lose their efficiency over
>time.
>
>How many people really worry about loss of efficiency?  The main
>concern for 
>most is a loss of >capacity<.  
>
>This strikes me as deception by distraction.
>
>Lee's signature defining research applies equally to PR : "Shoot the
>arrow 
>first, and paint the target around where it lands."
>
>David Roden - Akron, Ohio, USA
>EVDL Administrator
>
>= = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>EVDL Information: http://www.evdl.org/help/
>= = = = = = = = = = = = = = = = = = = = = = = = = = = = = 
>Note: mail sent to "evpost" and "etpost" addresses will not 
>reach me.  To send a private message, please obtain my 
>email address from the webpage http://www.evdl.org/help/ .
>= = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>
>
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Re: [EVDL] EVLN: Peugeot Dealer debunks EV-battery-fade theory

[Mark Abramowitz via EV]

> On Aug 1, 2014, at 10:54 AM, EVDL Administrator via EV  
> wrote:

> How many people really worry about loss of efficiency? 

Apparently many people on this list. (Sorry, I couldn't resist)
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Re: [EVDL] EVLN: Peugeot Dealer debunks EV-battery-fade theory

[Zeke Yewdall via EV]

Not to be too far off topic, but I just did a ~500 mile round trip in my
prius I did the same trip when it was brand new, and now did it with
40k on it.  When new, I averaged 56mpg there, and 52mpg back.  Just now, I
averaged 65mpg there and 57mpg back (it's more uphill one way than the
other, though there are three mountain passes each way either way).  I
attribute this partially to more worn tires affecting the mpg calcs now,
but also to the car wearing in and being a little looser now than when it
was brand new and actually being more efficient.  An EV won't have quite a
many parts to wear the new-car stiffness out of as an ICE, but still you
have wheel bearings and transaxle and such.  This is well known (whether
it's true or not is a different matter I guess, but it's well known...)
that brand new engines take 10k mile to wear in and achieve design
efficiency.

It's also possible that I've learned to drive more efficiently over two
years time driving it...

Zeke


On Fri, Aug 1, 2014 at 12:59 PM, Mark Abramowitz via EV 
wrote:

> > On Aug 1, 2014, at 10:54 AM, EVDL Administrator via EV <
> ev@lists.evdl.org> wrote:
>
> > How many people really worry about loss of efficiency?
>
> Apparently many people on this list. (Sorry, I couldn't resist)
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