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OilFreedom
Posts: 121
Joined: Sat May 07, 2011 2:45 pm
Location: San Diego, CA (Carmel Valley)

Re: Battery degradation info, 80% vs. 100% daily charge

Mon Jun 27, 2011 8:57 pm

Nissan, please give the Leaf the option of a 90% charge! This way the range could be increased a bit above 80% if needed while still being a little gentler on the battery than fully charging to 100%. Plus, the regeneration would not be limited as with a 100% charge. This has been requested by numerous owners in other threads. Thank you.

(I know some people have worked out good ways of getting to 90%, but these are largely manual -- and you have to remember to do them. I am looking for something that can be done completely automatically (like the 80% charging) via the on-board charging schedule.)
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GaslessInSeattle
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Leaf Number: 850

Re: Battery degradation info, 80% vs. 100% daily charge

Mon Jun 27, 2011 9:44 pm

I went through this same line of thinking just a month or so ago, tending at first to favor L1, then some knowledgeable folks here set me straight. Then I got the L2 installed, which put the whole thing to rest because it turned out that L2 was the key to making 80% workable for me since it's so much faster, allowing me to do things like boost to 100% relatively quickly on the occasion that I need to.
g
gasmiser1 wrote:How about this: 100% charge at L2 verses 100% charge at L1------Is L1 preferable when charging to save battery life :?:

If someone has to charge at 100% daily, and time permitting could use L1 overnight, wouldn't L1 extend battery life by using only 1/3 the amps and therefore have reduced heat while charging the batteries) :?:

I know-----------L1 requires a much longer charging time, 2+ times longer. But, given the opportunity.............I use L1 if I need 100% charge whenever possible.
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704hov1095
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Re: Battery degradation info, 80% vs. 100% daily charge

Wed Jun 29, 2011 8:52 am

When I picked up my car 2 weeks ago, the dealer rep said he was pretty sure Nissan was already in R&D stages on a new battery that would be released in 2+ years that had at least 150 mile range and could be installed in the existing Leafs--but at owner expense. Likely to be costly. Will be standard in the new Nissan EVs, some of which are higher end (Z's).

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TomT
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Re: Battery degradation info, 80% vs. 100% daily charge

Wed Jun 29, 2011 9:27 am

Always take such pronouncements with a large grain of salt. Most dealers are not exactly known for being fonts of reliable information on such things... That being said, a bigger battery would no surprise me though it being retrofittable to the current Leaf would. And even if it could be, I expect the price would be huge. But yes, Nissan is constantly in R&D on improved batteries, as is everyone else.

704hov1095 wrote:When I picked up my car 2 weeks ago, the dealer rep said he was pretty sure Nissan was already in R&D stages on a new battery that would be released in 2+ years that had at least 150 mile range and could be installed in the existing Leafs--but at owner expense. Likely to be costly. Will be standard in the new Nissan EVs, some of which are higher end (Z's).
Leaf SL 2011 to 2016, Volt Premier 2016 to 2019, and now:
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electricfuture
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Delivery Date: 14 Jun 2011
Leaf Number: 4205
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Re: Battery degradation info, 80% vs. 100% daily charge

Wed Jun 29, 2011 10:34 am

The good news concerning new batteries is that my understanding is that you don't have to replace all of them at once. The battery 4? packs are individually monitored. Thus you could just replace say 20% to bring your range back to the original 100 miles. As time goes on I plan to replace them in stages over a 5 year period starting 8-10 years from now.

If they let us keep the old batteries I could use them to store PV generated energy as they would still be good for that kind of usage.

New longer range batteries are absolutely necessary - but I don't think they will be that expensive in 5 years. Mass production and technology improvements will take care of that.

sfosri
Posts: 13
Joined: Sun Jul 10, 2011 11:24 pm
Delivery Date: 11 Jul 2011
Leaf Number: 1234

Re: Battery degradation info, 80% vs. 100% daily charge

Sun Jul 10, 2011 11:39 pm

In response to a comment:

Nissan Chat said that charging to 100% will have little impact on the batery life. 4000 L2 chragers are going in in San Diego this year - most this summer according to Ecotality


Ecototality is a scam company..they collected money from DOE to install chargers...they don't have a map of the chargers on their website nor a list...they don't even have an app they announced with big fanfare. This company put out big press releases but nothing really materializes.

I joined the Blink network which belongs to them and there I saw a map with a total of 26 chargers around the whole country...what a joke. They need to be investigated and so do all these companies that are getting lots of our tax money to build charging infrastructure.

GaslessInSeattle
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Leaf Number: 850

Re: Battery degradation info, 80% vs. 100% daily charge

Mon Jul 11, 2011 12:29 pm

My need for L2 charging outside my home is limited. L3 Up and down the corridors would be huge toward making this the only car I drive.

We do have to remember that we are at the beginning and that delays are to be expected.
G
sfosri wrote:In response to a comment:

Nissan Chat said that charging to 100% will have little impact on the batery life. 4000 L2 chragers are going in in San Diego this year - most this summer according to Ecotality


Ecototality is a scam company..they collected money from DOE to install chargers...they don't have a map of the chargers on their website nor a list...they don't even have an app they announced with big fanfare. This company put out big press releases but nothing really materializes.

I joined the Blink network which belongs to them and there I saw a map with a total of 26 chargers around the whole country...what a joke. They need to be investigated and so do all these companies that are getting lots of our tax money to build charging infrastructure.
Gasless: Silver 2012 SL, traded in for Lease on 1/13
Tesla S P85, Gray, pano, carbon fiber, took delivery: 2-9-13... LOVE this car!
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mark13
Posts: 393
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Re: Battery degradation info, 80% vs. 100% daily charge

Tue Jul 12, 2011 12:38 am

I charge the leaf 100% every other day..I don t remember the salesmen ever saying to only charge at 80% to save the battery for a extended life..

I do remember him saying also that they had to charge it to 100% before they could release it to me ..

Stoaty
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Re: Battery degradation info, 80% vs. 100% daily charge

Tue Jul 12, 2011 6:26 am

mark13 wrote:I charge the leaf 100% every other day..I don t remember the salesmen ever saying to only charge at 80% to save the battery for a extended life..
I wouldn't pay attention to the salesmen. Nissan didn't name the 80% charge "Long Life Mode" for nothing. It's right there in the manual. However, we don't know exactly how much this will prolong battery life.
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lincomatic
Posts: 312
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Re: Battery degradation info, 80% vs. 100% daily charge

Tue Jul 12, 2011 8:33 am

OilFreedom wrote:Nissan, please give the Leaf the option of a 90% charge! This way the range could be increased a bit above 80% if needed while still being a little gentler on the battery than fully charging to 100%. Plus, the regeneration would not be limited as with a 100% charge. This has been requested by numerous owners in other threads. Thank you.

(I know some people have worked out good ways of getting to 90%, but these are largely manual -- and you have to remember to do them. I am looking for something that can be done completely automatically (like the 80% charging) via the on-board charging schedule.)
Hmm... A bluetooth connection between a CAN-BUS reader monitoring the charge state and a DIY EVSE could do that! I don't know why I didn't think of bluetooth before! I was wondering how to do it without making a mess of wiring. I will definitely look into that after I get the EVSE fully built.

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