Herm
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Re: Does Running Battery Very Low Affect Capacity Over Time?

Mon Sep 19, 2011 9:06 am

mark13 wrote:Well Im at 7000 miles now with all 100% charges ..The car salesman never said anything about 80% charges doing the 1 hour intro..Nissan also gave it to me with a 100% charge..


Have you taken the Pledge not to publicly badmouth Nissan if range decreases 20% by the 5th year?.. You could express some mild disappointment but please no screaming about never buying a Nissan again.

mark13
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Re: Does Running Battery Very Low Affect Capacity Over Time?

Mon Sep 19, 2011 6:05 pm

I will not own that Leaf 5 years from now,it also has full extended warranty including batteries ...
5 years from now I will own a new E-car that should avg. 200-300 miles per charge..Hmm it could be a Leaf or maybe that new VW wagon due out next year..I will just have to wait and see what the auto companies have to offer in 2016..
Miles per charge will be the most imortant reason in choosing my next E-Car..

By the way if the dealer tells me next month to start charging 80%, I will charge only to 80%..

shay
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Re: Does Running Battery Very Low Affect Capacity Over Time?

Mon Sep 19, 2011 7:32 pm

mark13 wrote:By the way if the dealer tells me next month to start charging 80%, I will charge only to 80%..

Did you happen to read the manual? It talks about long-life charge (80%) and long-range charge (100%).

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TonyWilliams
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Battery Cell Balancing

Tue Sep 20, 2011 8:38 am

Battery Cell Balancing

From: Jason Crowe <evcustomersupport@nissan-usa.com>
Date: Tue, Sep 20, 2011 5:03 am
To: "Tony Williams" <tonywilliams@lovemyleaf.com>

Dear Tony,

I'm sorry for the late response, but I was able to get an answer for you.

Cell balancing is automatic with normal charge/discharge cycles and there is nothing additional that you can do to affect it. The service manual only addresses cell balancing when replacing a battery module. The new battery module must be balanced to match the other modules before installation.

For best battery life, Nissan recommends using the Long Life Mode for charging (80% Charge). Any more detail would be considered proprietary.

If you have any further questions or concerns please feel free to contact us again. You can do this through email to evcustomersupport@nissan-usa.com, chatting in with us on the LEAF website, or giving us a call at 1-877 NO GAS EV (664-2738).

We're here to serve you from 7:00 a.m. to 7:00 p.m. (CST) Monday through Friday, and 8:00 am to 3:00 pm (CST) Saturday.

Sincerely,
Nissan LEAF Customer Support
Jason Crowe | Presales / Telematics
1-877 NO GAS EV (664-2738) ext. 458001
evcustomersupport@nissan-usa.com

Stoaty
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Re: Battery Cell Balancing

Tue Sep 20, 2011 8:47 am

TonyWilliams wrote:Cell balancing is automatic with normal charge/discharge cycles and there is nothing additional that you can do to affect it.

I guess we don't have to charge to 100% to have cell balancing take effect... unless we are doing "abnormal" charge/discharge cycles. :D
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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TonyWilliams
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Re: Battery Cell Balancing

Tue Sep 20, 2011 8:54 am

Stoaty wrote:
TonyWilliams wrote:Cell balancing is automatic with normal charge/discharge cycles and there is nothing additional that you can do to affect it.

I guess we don't have to charge to 100% to have cell balancing take effect... unless we are doing "abnormal" charge/discharge cycles. :D


Well, we don't know that exactly. What we do know is that it's automatic, and anything else is IP. Ok, we knew it was automatic, but we don't know the parameters under which it works.

Without that knowledge, of course there is nothing we can do to affect it.

Tony

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TomT
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Re: Battery Cell Balancing

Tue Sep 20, 2011 8:56 am

The term "normal" leaves a lot open for interpretation... Is 80 percent "normal?" Is 100 percent "normal?" What is an abnormal cycle?

Stoaty wrote:
TonyWilliams wrote:Cell balancing is automatic with normal charge/discharge cycles and there is nothing additional that you can do to affect it.

I guess we don't have to charge to 100% to have cell balancing take effect... unless we are doing "abnormal" charge/discharge cycles. :D
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.

Stoaty
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Re: Does Running Battery Very Low Affect Capacity Over Time?

Tue Sep 20, 2011 9:02 am

The fact that they didn't say we have to charge to 100% periodically to balance the cells suggests that the system is smart enough to do it when needed--especially since they emphasized the charge to 80% for longest battery life.

Now, how about asking them why the first capacity bar is lost at 85%, rather than being evenly divided over the whole range? :twisted: I'm sure they would be very forthcoming on that as well. :D
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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Battery Aging Model Spreadsheet

DaveinOlyWA
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Re: Does Running Battery Very Low Affect Capacity Over Time?

Tue Sep 20, 2011 9:06 am

ooooh, so we now believe that cell balancing happens ALL the time?? well, who has been saying that for OVER a year now?
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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TonyWilliams
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Re: Does Running Battery Very Low Affect Capacity Over Time?

Tue Sep 20, 2011 9:08 am

DaveinOlyWA wrote:ooooh, so we now believe that cell balancing happens ALL the time?? well, who has been saying that for OVER a year now?


I don't think they said that, or really said anything. It's automatic. That's all you need to know.

The proletariat must return to the salt mines now.

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