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TRONZ
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Leaf Number: 202
Location: Denver, CO

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

Sun May 13, 2012 11:02 am

Speaking of charging to 100% and then immediately using it. As already mentioned I always charge to 100% but only use L1. It is not uncommon for our LEAF to finish a 100% L1 charge just as we are getting up or within an hour or two of it being driven off to 80-90%. This is good since it does not sit very long at 100%. Everyone's schedule is different but I wonder if others in the 100% crowd could deliberately mix in L1 overnight to prevent their cars from sitting for hours at 100% on L2? What would be cool is if Nissan added a variable charge rate feature to the LEAF. You tell your car when you plan to first drive it in the morning, and it times it's charge rate to finish off 100% at that exact drive time. Could be a useful additional tech feature in mitigating capacity loss for everyone in the 100% crowd.

Maybe the LEAF App could start recommending a charging level each night before you plug in?
Every start, is as good as any start can ever be. - Douglas Darden

Stats;
2011 LEAF SL VIN#202, Delivered 01.30.11. Now, by far, the oldest LEAF in Colorado.

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

Sun May 13, 2012 11:16 am

TRONZ wrote:Speaking of charging to 100% and then immediately using it. As already mentioned I always charge to 100% but only use L1. It is not uncommon for our LEAF to finish a 100% L1 charge just as we are getting up or within an hour or two of it being driven off to 80-90%. This is good since it does not sit very long at 100%. Everyone's schedule is different but I wonder if others in the 100% crowd could deliberately mix in L1 overnight to prevent their cars from sitting for hours at 100% on L2? What would be cool is if Nissan added a variable charge rate feature to the LEAF. You tell your car when you plan to first drive it in the morning, and it times it's charge rate to finish off 100% at that exact drive time. Could be a useful additional tech feature in mitigating capacity loss for everyone in the 100% crowd.

Maybe the LEAF App could start recommending a charging level each night before you plug in?


Doesn't the charging timer end time (without start time specified) achieve the same goal you describe? See Page CH-20 of the 'old' owners manual.
--
JP White
http://jpwhitenissanleaf.com
Blue SL-e, Res 4/22/10, Ord 3/29/11, Del 7/30/11
110,000 Miles.
Lost 5 Capacity bars
7/18/13 (29,206), 8/25/14 (51,728), 7/12/15 (71.108), 5/12/16 (88,362), 10/17/16 (96,532)
New Battery 12/3/16 (98,956)

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turbo2ltr
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Delivery Date: 04 Feb 2011
Leaf Number: 185
Location: Phoenix, AZ

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

Sun May 13, 2012 11:18 am

Up until a couple weeks ago, the charge timer was set for 9pm and always 100%, because I never know if I will need the range on the following day.
Many days I drive less than 20 miles. About once or twice I week I get down to near empty (1-2 bars, old firmware)
So on the light days, if I start by 9pm, its done by 11pm. So it sits at 100% for 8 hours nearly every night.

After a conversation with someone at nissan, I changed my charging to just provide an end time of 4am significantly reducing the amount of time it's sitting at 100%. I may even push that a little farther to 5 or 6am since it always seems to be done early.

Over the weekends, I tend to top off to 100% from short trips.

Over the past few months, I have been noticing that I get the "charging stopped" at 11 of 12 bars very regularly now. Then a "charge complete" a few hours later. Whereas before it almost always charged to completion the first time.

I'm also a heavy footed driver so my battery experiences high loads quite often (as in every day).

I have not noticed any perceivable decrease in range, but I don't do long trips regularly that I'd notice. The trips I do do still take the same amount of bars as far as I can see. My driving style is still the biggest factor in how many bars I use (i.e. highway speed I choose to drive).

Car is always charged in my garage.
Silver SL-e
Ford F450 Crew Cab Hybrid Conversion

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

Sun May 13, 2012 11:29 am

turbo2ltr,
How many miles do you get from 100% to VLBW and what efficiency?

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

Sun May 13, 2012 12:37 pm

one thing i do now (before i had to be AT work AT 6 AM) that i have changed jobs is charge to 50-70% the night before, then get up and plug in. depending on the night before, i either get to 100% less than an hour before i leave or simply leave with 90+%. either way, its more than workable.

granted probably not an option for most but just saying ya know...
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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turbo2ltr
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Re: Lost a "high-voltage battery status" bar, down to 11

Sun May 13, 2012 1:15 pm

TickTock wrote:turbo2ltr,
How many miles do you get from 100% to VLBW and what efficiency?


The dash says I get 4.0mi/kWh. I've seen it range +/- 0.2%

A common trip I do is about 55 miles of mixed driving and I usually have between 2-4 bars left depending on how I drive.

(type for non local people)
It includes driving jomax/I17 to I17/101 (3 miles 45mph, 5 miles highway)
Bell/303 via 101 and bell (8 miles highway, 9 miles 45mph with lights)
back to I17 via the 303 (26 miles highway, 3 miles 45mph)

The 303 return trip is pretty draining (long gradual elevation changes, and seems to have a total increase in altitude in that direction) and how much charge I use is greatly dependent on my speed. I typically do 62-65.

I left my laptop at work, but I'll do a GID check tuesday morning. I know what I was getting when I first got the car, and I haven't checked since.
Silver SL-e
Ford F450 Crew Cab Hybrid Conversion

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aqn
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Leaf Number: 1333
Location: Austin, TX

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

Sun May 13, 2012 2:17 pm

gbarry42 wrote:We've assumed the bars to be equally spaced, so 11/12 means 92%.
The first capacity bar represent 15% of capacity, accoding to the Nissan LEAF Service Manual.
Anna Nguyen

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

Sun May 13, 2012 2:42 pm

rainnw wrote:At over 20,000 miles and closing in on a year at the end of the month, i have not lost any of the "high voltage battery status" bars.
RuneW wrote:Personally, I find posts describing problems with the Leaf about 1000 times more interesting than posts stating that "my car has no problems", but that's me...
I disagree. More information is always better. But that's just me. I encourage all high mileage (say, > 13K miles/year) LEAF owners to report battery capacity loss/non-loss, along with pertinent info: locale/temperature, charging habit, etc.
Anna Nguyen

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

Sun May 13, 2012 2:48 pm

bturner wrote:Another data point....

I just lost a bar this weekend. I have had my Leaf almost exactly one year. Mileage is 13,633. I live in the Phoenix area and charge to 100% every night.

Just reinforces that if you are concerned about longevity of your battery, charging to 100% in a hot climate and leaving it there for a period of time is not a great idea. What time is your Leaf set to reach 100% charge relative to when you typically leave in the morning?
2011 Leaf with 62,000 miles given to Nephew
2013 Tesla Model S85 with 251 miles rated range at full charge
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aqn
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Delivery Date: 30 Apr 2011
Leaf Number: 1333
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Re: Lost a "high-voltage battery status" bar, down to 11

Sun May 13, 2012 3:02 pm

DurkaDurka wrote:* We always charge to 100% (we drive it a lot, 17,000 miles in 14 months of driving).

To me, this is not a lot of driving and I don't see a problem charging to 100%.


Nissan LEAF Owner's Manual, page CH-20:
"Long life mode
NISSAN recommends charging the Li-ion battery
using the long life mode to help maximize
the Li-ion battery useful life.
Long life mode can only be set using the
charging timer function.
The long life mode is set by changing the [%
Charge] to [80% Charge (Improves Battery
Longevity)] [...]
"

Furthermore, the LEAF's warranty includes an exclusion regarding Li-Ion battery being charged full on a daily basis "despite the lithium-ion battery keeping a high state of charge level (98-100%)". (LEAF Warranty Booklet, page 9)

From: http://mynissanleaf.com/wiki/index.php? ... neral_Info
Anna Nguyen

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