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Details on Nissan Leaf battery pack, including how rechargin

Posted: Thu May 27, 2010 12:35 pm
by Cacti
http://green.autoblog.com/2010/05/27/de ... arging-sp/

"In Smyrna yesterday, Nissan's director of product planning, Mark Perry, gave AutoblogGreen some more information on the Leaf battery pack. As we know, Nissan says the 24 kWh pack gives the Leaf a 100-mile range on the gentle LA4 cycle (meaning it probably isn't a totally reliable guide to estimate real-world driving). Still, this means the test packs have been charged and discharged a lot, because Perry said Nissan has done "hundreds of thousands" of miles of reliability testing on the battery packs, including dunking them in a pool and freezing them. Not that we'd expect him to say anything different, but Perry is confident that the battery pack is totally safe."

Details on Nissan Leaf battery pack, charge rates, lifespan

Posted: Thu May 27, 2010 12:39 pm
by Bicster
http://green.autoblog.com/2010/05/27/de ... arging-sp/
How you recharge the pack will affect its life. Nissan has said it expects to Leaf drivers to have around 70 to 80 percent capacity left in the pack after ten years. What will get drivers to the upper or lower end of that range? The amount of fast charging one does. With regular Level 2 charging, drivers should expect 80 percent live left in the battery. With a lot of Level 3 charging – two or three times a day – the pack will only be at the 70 percent level. Level 3 charging is appealing because it can get the battery from zero to 80 percent full in under 30 minutes, but there is a very clear drawback if it becomes a habit. Perry said that most people will be happy with 240V home charging

Re: Details on Nissan Leaf battery pack, charge rates, lifespan

Posted: Thu May 27, 2010 12:56 pm
by mwalsh
Well, that'll work for me. If I get the 65 miles a day combined city/highway I'm hoping for, the need for me to charge anyplace but home drops to just about zero.

Re: Details on Nissan Leaf battery pack, charge rates, lifespan

Posted: Thu May 27, 2010 1:00 pm
by evnow
Merging topics.

Re: Details on Nissan Leaf battery pack, charge rates, lifespan

Posted: Thu May 27, 2010 1:06 pm
by Bicster
evnow wrote:Merging topics.
Dang, and I checked before I posted. :roll:

Re: Details on Nissan Leaf battery pack, charge rates, lifespan

Posted: Thu May 27, 2010 1:08 pm
by trentr
Does this mean that if I charge only with 110V, that I will still have about 90 percent capacity after 10 years? :D

Re: Details on Nissan Leaf battery pack, charge rates, lifespan

Posted: Thu May 27, 2010 1:12 pm
by mitch672
trentr wrote:Does this mean that if I charge only with 110V, that I will still have about 90 percent capacity after 10 years? :D
nope, the lithium pack also has a "calendar shelf life" as well, regardless of use/no use, charge/no charge. That will be the limiting factor, not the charge rate.

Re: Details on Nissan Leaf battery pack, charge rates, lifespan

Posted: Fri May 28, 2010 1:01 am
by MikeBoxwell
I've always been really skeptical on how good the LA4 figures really are. However, I recently saw the LA4 figures for the new Ford Fiesta.

The Ford Fiesta has been available in Europe for some time, and I carried out a week long road test in one last year. It had the same engine and gearbox to the specification tested for LA4. I was within 0.6 mile of the official LA4 fuel consumption figures during my own economy testing and exceeded the official European figures.

To be fair, it's the only time I've managed to achieve that in any car, but it proves that it can be done.

Re: Details on Nissan Leaf battery pack, charge rates, lifespan

Posted: Fri May 28, 2010 5:26 am
by sjfotos
Very interesting Mike. Good information, were you trying to directly duplicate the cycle or were you 'just' recording how it operated as you went about your tasks?

Re: Details on Nissan Leaf battery pack, charge rates, lifespan

Posted: Fri May 28, 2010 8:34 pm
by Rat
Well, somewhere earlier in another thread was the question as to whether we could dispense with the charger altogether if we can suffice with the trickle charge. At that time I thought Nissan was requiring the charger to be installed as a qualifier to reserve, but now it looks like that might only be for the EV Project. I typically drive < 5 mi. before noon and then the car sits all day and all night. I would think that I could charge off 110V house current just fine, but the question of how that affects battery life was not addressed in this info. It's still not clear to me whether this approach is permitted, practical, or financially wise. I have 220 in my garage now, so it probably wouldn't be all that expensive to put in the charger, and I have to believe that there would be times I need to charge faster than 18 hours.