SageBrush
Posts: 4098
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Re: The 40KWH Battery Topic

Sun Jan 06, 2019 7:47 am

krox wrote:Thank. Where can I read this information (about the inability to replace the batteries) from the official Nissan? Give me a link.

You should get a clue.
Companies say what they will support, and what they will authorize.
Nissan does not authorize use of the their BMS in transplanted batteries. Nissan employs a software lock to prevent unauthorized use.

Unless you can either
1. Hack the lock; or
2. Replace the BMS

You are NOWHERE
Since you have not realized that the BMS is locked down, I'll go out on a limb and say that you lack the skills for either (1) or (2).
2013 LEAF 'S' Model with QC & rear-view camera
Bought off-lease Jan 2017 from N. California
Car is now enjoying an easy life in Colorado
03/2018: 58 Ahr, 28k miles
11/2018: 56.16 Ahr, 30k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

jsa061
Posts: 13
Joined: Fri Mar 22, 2013 2:56 am
Delivery Date: 22 Mar 2013
Location: Norway

Re: The 40KWH Battery Topic

Sun Jan 06, 2019 2:14 pm

What you can do, for instance, is to change to a 30 kWh battery as long as you also change the matched VCM at the same time. It's not very hard.

It's also possible to hack the communication between the BMS and the car. It is actually a lot of things you can do to get a different battery running in your Leaf, but the easiest is to Just change the battery and the VCM.
2014 Nissan LEAF Tekna 30 kWh

kovadam
Posts: 30
Joined: Wed Jun 06, 2018 12:07 am
Delivery Date: 28 Sep 2018
Location: Hungary, Europe

Re: The 40KWH Battery Topic

Thu Jan 10, 2019 12:46 am

krox wrote:Soon a video will be released on YouTube, where we installed a 40 kWh battery on the Leaf 24 kWh. See what came of it. :)
Hi Nissan!


Waiting for the video link!

Oilpan4
Gold Member
Posts: 537
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: The 40KWH Battery Topic

Thu Jan 10, 2019 4:04 am

Well according to the Ukrainian on you tube who already got a 30kwh pack to work in a 2011 leaf... He says that a 24kwh batt pack can be gutted and repacked with 40kwh modules.
All he needs to prove it is a 40kwh pack to sacrifice.
2011 white SL leaf with 2014 batt.
Chargers: Panasonic brick moded for 240v, duosida 16a 240v and a 10kw setec portable CHAdeMO
Location: 88103

krox
Posts: 66
Joined: Wed Sep 14, 2016 12:46 pm
Delivery Date: 14 Sep 2013
Location: Ukraine

Re: The 40KWH Battery Topic

Mon Jan 14, 2019 2:34 pm

Link to video (in Russian):
https://youtu.be/GtGOZvpa6Ks

Oilpan4
Gold Member
Posts: 537
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: The 40KWH Battery Topic

Mon Jan 14, 2019 8:30 pm

You can message him and he will respond.
I don't know if he reads and writes English or uses the translator.
2011 white SL leaf with 2014 batt.
Chargers: Panasonic brick moded for 240v, duosida 16a 240v and a 10kw setec portable CHAdeMO
Location: 88103

Kieran973
Posts: 95
Joined: Tue Jun 19, 2018 6:51 pm
Delivery Date: 30 Apr 2019
Location: near NY, NY

Re: The 40KWH Battery Topic

Mon Jan 14, 2019 9:04 pm

So with the 40 kWh Leaf being out now for about a year, what are owners seeing in terms of battery degradation? Last I checked a few months ago:

-Dave in Olympia had (I think?) 2.75% degradation over 12,000 miles in Washington state

-Leftie Biker had 5.5% degradation over 6 months and only 1,000 miles in upstate New York (yikes, sorry)

But what are other Leaf owners/leasees witnessing on their 40 kWh Leafs?
2019 Leaf SV (silver) with All-Weather Package

Kieran973
Posts: 95
Joined: Tue Jun 19, 2018 6:51 pm
Delivery Date: 30 Apr 2019
Location: near NY, NY

Re: The 40KWH Battery Topic

Mon Jan 14, 2019 9:31 pm

And what do we make of this article?

posting.php?mode=reply&f=9&t=25773

40,000 miles driven, 30,000 of them in Phoenix, constant rapid charging, and only 7.5% capacity loss according to Leaf Spy? Over 12,000 miles, that would only be 2.25% degradation. And imagine if she didn't rapid charge so much, and/or if she lived somewhere colder than Phoenix. Unless, of course, the 7.5% capacity loss was caused by 1.) calendar degradation in the bad AESC battery, and 2.) Phoenix, so it wouldn't really matter if she drove 40,000 miles or 1,000 miles in one year, she still would have experienced the same degradation regardless?

But how do you reconcile her Leaf's profile with say Leftie Biker's experience in his 2018?
2019 Leaf SV (silver) with All-Weather Package

LeftieBiker
Moderator
Posts: 12025
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: The 40KWH Battery Topic

Mon Jan 14, 2019 9:45 pm

Constant QCs seem to boost the SOH, but there is little evidence that the effect is permanent. Maybe she lives where nights are cool and the pack cools off.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

cwerdna
Posts: 9276
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: The 40KWH Battery Topic

Mon Jan 14, 2019 10:11 pm

Kieran973 wrote:And what do we make of this article?

http://www.mynissanleaf.com/posting.php ... =9&t=25773

40,000 miles driven, 30,000 of them in Phoenix, constant rapid charging, and only 7.5% capacity loss according to Leaf Spy? Over 12,000 miles, that would only be 2.25% degradation.
...
But how do you reconcile her Leaf's profile with say Leftie Biker's experience in his 2018?

I think you made a copy paste booboo.

'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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