vegastar
Posts: 208
Joined: Mon Dec 13, 2010 11:29 am
Delivery Date: 07 Jul 2011
Leaf Number: 5564
Location: Portugal

Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 10, 2012 2:23 pm

I think the CC trick only works if the 100% voltage is lower than 394V. As your today charge yelded 270gids@394V there was no room for extra electrons to sneak in.
2011 Nissan LEAF since 2011-07-07, 151000 km on 2018-03-03, 7 bars, 37.9Ah.

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Ingineer
Posts: 2741
Joined: Fri Oct 15, 2010 1:09 pm
Delivery Date: 13 Jul 2011
Leaf Number: 6969
Location: Berkeley, California
Contact: Website

Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 10, 2012 2:35 pm

The charger goes into a CV (Constant Voltage) mode, and will not go above 394v. But usually holding at this voltage for a longer time will allow equalization and as much charge as possible at 4.1vpc. Of course, You'll lose charge if your climate control pulls more than your charger can provide. So if you are pulling over about 3.1kW on full 240v level II, you'll lose some charge. Letting it continue will usually get it back, as the Leaf will come down (or up) to temperature and CC draw will reduce. A hot car in the sun may never come down in time though.

-Phil
Easily Learn Electricity HERE! - - - - Website: http://evseupgrade.com/ - - - - Like us on Facebook: EVSE Upgrade

RickS
Posts: 162
Joined: Wed Sep 01, 2010 6:04 pm
Delivery Date: 11 Jun 2013
Location: Tempe, AZ

Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 10, 2012 7:09 pm

Lost my top bar this morning after charging to 100% early this morning. 11,383 miles and one year one month and five days in. :cry:
leafbatteriescanttaketheheat.com/

EdmondLeaf
Posts: 1500
Joined: Tue Jan 18, 2011 2:18 pm
Location: Edmond, OK

Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 10, 2012 7:30 pm

Sorry, looks like you number 9 reporting here. Please provide more details about your driving style efficiency and about charging ( 80 or 100) and storage especially during summer (shade or sun). Wonder if you leased or bought?

opossum
Posts: 153
Joined: Wed Jun 06, 2012 9:40 pm
Delivery Date: 21 Mar 2011
Leaf Number: 500
Location: Phoenix, AZ

Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 10, 2012 8:13 pm

I'm not sure how relevant driving, charging and storage habits really are at this point. We seem to have heard from people with a wide variety of habits. I don't see his experience posted on this forum, but I know of another Phoenix area Leaf owner who lost a bar this month after about 16,000 miles... despite almost always charging to 80% in an air-conditioned garage, having covered parking at work, almost never fast charging (about three times in over a year), and certainly never running the battery pack dead. This guy was THE gold standard for vehicle care by Nissan's standards, and yet has roughly 15-20% loss as of this month...
azdre/opossum, Phoenix, 3/21/11 purchase, 10/2/12 lemon law return.
23k miles, 3 bars lost, officially rated "normal" by Nissan

EdmondLeaf
Posts: 1500
Joined: Tue Jan 18, 2011 2:18 pm
Location: Edmond, OK

Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 10, 2012 8:21 pm

opossum wrote:I'm not sure how relevant driving, charging and storage habits really are at this point. We seem to have heard from people with a wide variety of habits. I don't see his experience posted on this forum, but I know of another Phoenix area Leaf owner who lost a bar this month after about 16,000 miles... despite almost always charging to 80% in an air-conditioned garage, having covered parking at work, almost never fast charging (about three times in over a year), and certainly never running the battery pack dead. This guy was THE gold standard for vehicle care by Nissan's standards, and yet has roughly 15-20% loss as of this month...


As more info is coming from 11 bars people it appears that unfortunately you are right.

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TickTock
Posts: 1701
Joined: Sat Jun 04, 2011 10:30 pm
Delivery Date: 31 May 2011
Leaf Number: 3626
Location: Queen Creek, Arizona
Contact: Website

Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 10, 2012 8:36 pm

My garage isn't air conditioned, but I got five stars across the board on my 1-year mandatory checkup so I am apparently not doing anything that Nissan anticipated would hurt battery life.

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TomT
Posts: 10639
Joined: Sun Aug 08, 2010 12:09 pm
Delivery Date: 01 Mar 2011
Leaf Number: 000360
Location: California, now Georgia
Contact: Website

Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 10, 2012 8:41 pm

I think that we have fairly conclusively determined at this point that the portion of the battery report that we get to see is of little value and is very rudimentary at best... The real data goes to Nissan and is for their eyes only...

TickTock wrote:My garage isn't air conditioned, but I got five stars across the board on my 1-year mandatory checkup so I am apparently not doing anything that Nissan anticipated would hurt battery life.
59,991 miles/12 bars/289 Gids/68.54 AHr/101% SOH/101.64% Hx 7May15 w/ new Lizard (barely made the warranty).
71,770 miles/12 bars/256 Gids/59.04 AHr/88% SOH/87.92% Hx 3Mar16 at 5 yr lease return.

Now driving a 2019 Tesla Model 3 LR FSD.

opossum
Posts: 153
Joined: Wed Jun 06, 2012 9:40 pm
Delivery Date: 21 Mar 2011
Leaf Number: 500
Location: Phoenix, AZ

Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 10, 2012 8:55 pm

TomT wrote:I think that we have fairly conclusively determined at this point that the portion of the battery report that we get to see is of little value and is very rudimentary at best... The real data goes to Nissan and is for their eyes only...


Yes, but that generic report will be good evidence that we did not cause the degradation and will hopefully keep Nissan from slipping out of this unscathed by claiming that certain owners did this to their own batteries. 8-)

RickS
Posts: 162
Joined: Wed Sep 01, 2010 6:04 pm
Delivery Date: 11 Jun 2013
Location: Tempe, AZ

Re: Lost a "high-voltage battery status" bar, down to 11

Sun Jun 10, 2012 9:38 pm

I'm 80% charge most days, maybe full once a week if that. I've fast charged about a dozen times. I do park in the sun during the days, but the car is parked in a garage at night so it does have a chance to modestly cool down at night.
leafbatteriescanttaketheheat.com/

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