golfcart
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Re: Nissan Energy

Thu Dec 20, 2018 2:03 pm

DaveinOlyWA wrote:So Nissan has already started this in the US? What exactly was the first step?


I've only seen that bulletin so that's all I know. They've been doing it on some level already in Japan and the UK if I'm not mistaken so it's not a stretch for them to do it here.

If you believe the auto blogs they will officially announce it at CES along with the new leaf. I guess we'll know in a couple weeks for sure.
2015 S with Charge Package

cwerdna
Posts: 9174
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Re: Nissan Energy

Thu Dec 20, 2018 2:05 pm

DaveinOlyWA wrote:
LeftieBiker wrote:
Extra cycling effects; minimal. Realize that V2H does not involve the abuse of power surges to over 100 KW or swings to regen to nearly -60 KW.


In Japan, where this is already being done, excessive degradation is being reported. I'm explaining something that is already being seen (degradation of the packs), not speculating on what might or might not happen.


Considering the background noise of "normal" degradation, I wonder how they can tell? It would be somewhat easier if people in specific regions had shared experiences but that does not seem to be the norm.

https://www.facebook.com/groups/nissan. ... 3719263465 (unfortunately a "closed" FB group) has a pointer to someone in Japan who got a replacement battery under capacity warranty (they hit 8 bars in time) for their '13 Leaf in March 2017. He said his car was "registered" September 2013.

He has a pic of his car showing 8 capacity bars at 41799 km (~25972 miles) and all 12 again at 42104 km.

They said they were running a V2H system, Leaf to Home. His current location (not sure of it back then) was listed as Kawasaki-shi
Kanagawa. See https://www.google.com/maps/place/Kawas ... re,+Japan/, for reference.

(Was amazed that this is one of the few times that Facebook's search actually worked and turned up the result I needed. I knew I'd seen a post of a Japanese Leaf driver w/excessive degradation probably due to his V2H system but didn't remember when and which group..)

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Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

DaveinOlyWA
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Re: Nissan Energy

Thu Dec 20, 2018 3:10 pm

cwerdna wrote:
DaveinOlyWA wrote:
LeftieBiker wrote:
In Japan, where this is already being done, excessive degradation is being reported. I'm explaining something that is already being seen (degradation of the packs), not speculating on what might or might not happen.


Considering the background noise of "normal" degradation, I wonder how they can tell? It would be somewhat easier if people in specific regions had shared experiences but that does not seem to be the norm.

https://www.facebook.com/groups/nissan. ... 3719263465 (unfortunately a "closed" FB group) has a pointer to someone in Japan who got a replacement battery under capacity warranty (they hit 8 bars in time) for their '13 Leaf in March 2017. He said his car was "registered" September 2013.

He has a pic of his car showing 8 capacity bars at 41799 km (~25972 miles) and all 12 again at 42104 km.

They said they were running a V2H system, Leaf to Home. His current location (not sure of it back then) was listed as Kawasaki-shi
Kanagawa. See https://www.google.com/maps/place/Kawas ... re,+Japan/, for reference.

(Was amazed that this is one of the few times that Facebook's search actually worked and turned up the result I needed. I knew I'd seen a post of a Japanese Leaf driver w/excessive degradation probably due to his V2H system but didn't remember when and which group..)


How many V2 systems are out there and if there is more than a handful, it would seem like this would be bigger news?
2011 SL; 44,598 miles. 2013 S; 44,840 miles.2016 S30 deceased. 29,413 miles. 2018 S40; 15,000 miles, 478 GIDs, 37.0 kwh 109.81 Ahr , SOH 94.61, Hx 120.15
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cwerdna
Posts: 9174
Joined: Fri Jun 03, 2011 4:31 pm
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Re: Nissan Energy

Thu Dec 20, 2018 6:00 pm

DaveinOlyWA wrote:How many V2 systems are out there and if there is more than a handful, it would seem like this would be bigger news?

AFAIK, they're only in Japan. At the interview I pointed to at viewtopic.php?p=504949#p504949, there are supposedly 7,000 such setups in Japan.

However, I have no idea what forums Japanese Leafers tend to hang out on but they're likely primarily in Japanese, which I can't read. And, in the Leaf FB groups I'm on, it's not like folks pre-announce that they have a V2H system and are down x capacity bars. And, there's an incredible about of CHAdeMO over there (https://www.chademo.com/ says 7400 stations in Japan) along w/lower highways speed limits, so range on a single charge is likely less important.

And (I don't know the details, someone will have to fill in the gaps), apparently, there's virtually no demand for used cars there (talked to a guy from college who lived in Japan for awhile and did have a used BMW 8-series there). https://www.nytimes.com/1993/09/12/worl ... e-new.html from 1993 talks about the inspection system and
In the United States, 64.1 percent of passenger cars in 1991 were at least five years old. In Japan, only 46.8 percent were. In the United States, 30.5 percent of cars were at least 10 years old, versus 9.6 percent in Japan.

With little demand for used cars, cars here lose their value quickly. "A car more than six years old and in very good condition you can easily see in a junkyard," said Hiroshige Hanabusa, who makes a living helping people with the administrative chores associated with their cars.

Many of the used cars find their way to other nations, where they are considered bargains. In New Zealand, used Japanese cars are cutting so heavily into sales of new cars that auto dealers and assemblers have complained to the Government. And Russians can't get enough of old Japanese cars. Taking Cars Home to Moscow

Google for no demand for used cars in japan years.
https://www.quora.com/Why-does-Japan-export-used-cars has some info.

I have no idea how accurate these are regarding "shaken" over there:
https://en.wikipedia.org/wiki/Motor-veh ... ion_(Japan)
https://jalopnik.com/my-first-japanese- ... 1631622802 which points to https://oppositelock.kinja.com/my-first ... 1631615164

So, the above factors also might skew how long Japanese Leafers keep their cars vs. those in the US.

I'm still at 11 bars on my 5/2013 built used Leaf past 62K miles w/SOH now hovering around 82.xx to 83.xx%. As a reminder, at viewtopic.php?p=496269#p496269, I pointed to a Phoenician w/the same build month as me who lost his 4th bar on 8/23/16 at 31.4K miles.

'19 Bolt Premier
'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

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