tcherniaev
Posts: 73
Joined: Sat Feb 18, 2012 8:03 pm
Delivery Date: 23 Jan 2012
Location: Salt Lake City, Utah

New 40 kWh pack as replacement for 24 kWh pack

Mon May 07, 2018 9:47 am

Hi guys, I know that this video is in Russian, but worth looking at for those who can understand what he is saying: https://youtu.be/t2QdPbgbSdA

For the rest of you, here is a summary:

-- This guy previously swapped 30 kWh pack into a 24 kWh LEAF. It did not work initially, but after he also swapped control modules it worked fine and reported correct capacity, estimated range, etc.

-- 40 kWh battery can't be used as a direct replacement, but he believes that modules can be swapped. Physical dimensions are the same, but some wiring, connections, and control units are not compatible.

-- Internal module design is different, offering a tighter fit, see his prior video: https://youtu.be/r6JeVZbNi6Y

-- His plan is to purchase a salvage 40 kWh pack and do a demo where he actually upgrades an old LEAF to 40 kWh.

As a side note, here is a video from Ukraine Tesla guru who visits LEAF aftermarket shop where they dismantle LEAF battery packs, test each module, and reuse those modules that are still good. What is interesting about this video is that they highlight that, in a typical battery, heat damage to the modules in the middle is much worse that damage to perimeter modules. They link it to a lack of thermal management in LEAFs (I know, big surprise). https://youtu.be/SVTtXvGmBvU

ybpvin
Posts: 5
Joined: Fri Aug 24, 2018 4:55 am
Delivery Date: 24 Aug 2018
Leaf Number: 022135

Re: New 40 kWh pack as replacement for 24 kWh pack

Fri Aug 24, 2018 11:30 pm

Hi!
I watched this video. I can translate, what interests you ?
I am interested in questions of increase in a charge of batteries too. :D

Silverfish
Posts: 27
Joined: Thu Jun 21, 2018 10:32 am
Delivery Date: 21 Jun 2018

Re: New 40 kWh pack as replacement for 24 kWh pack

Sun Sep 02, 2018 11:16 am

I would be interested in any information about what batteries I can eventually swap into my 2013 Leaf when the current 24 kWh battery degrades to the point where it's no longer usable.

So any translations that help with that would be most appreciated.

ybpvin
Posts: 5
Joined: Fri Aug 24, 2018 4:55 am
Delivery Date: 24 Aug 2018
Leaf Number: 022135

Re: New 40 kWh pack as replacement for 24 kWh pack

Sun Sep 02, 2018 12:04 pm

Silverfish wrote:I would be interested in any information about what batteries I can eventually swap into my 2013 Leaf when the current 24 kWh battery degrades to the point where it's no longer usable.

So any translations that help with that would be most appreciated.


I understand your question.
You can install 30 and 40 KW battery cells without significant rework.
You will need to reprogram the controller so that the car understands the actual range of distance.
I can recommend a YouTube channel where such issues are dealt with https://www.youtube.com/TehnoVinTar
The author speaks Ukrainian, but knows English well and can answer your comments.

Silverfish
Posts: 27
Joined: Thu Jun 21, 2018 10:32 am
Delivery Date: 21 Jun 2018

Re: New 40 kWh pack as replacement for 24 kWh pack

Mon Sep 03, 2018 11:29 am

ybpvin wrote:
Silverfish wrote:I would be interested in any information about what batteries I can eventually swap into my 2013 Leaf when the current 24 kWh battery degrades to the point where it's no longer usable.

So any translations that help with that would be most appreciated.


I understand your question.
You can install 30 and 40 KW battery cells without significant rework.
You will need to reprogram the controller so that the car understands the actual range of distance.
I can recommend a YouTube channel where such issues are dealt with https://www.youtube.com/TehnoVinTar
The author speaks Ukrainian, but knows English well and can answer your comments.


Thanks!

Lothsahn
Posts: 53
Joined: Thu Apr 05, 2018 4:35 pm
Delivery Date: 04 Jan 2018
Leaf Number: 007797

Re: New 40 kWh pack as replacement for 24 kWh pack

Wed Sep 05, 2018 2:56 pm

ybpvin wrote:You will need to reprogram the controller so that the car understands the actual range of distance.


Any idea how that would be done? Any links to where this is discussed? The difference in discharge curves for 30 and 40kwh packs is the real problem with regards to swapping cells.

ybpvin
Posts: 5
Joined: Fri Aug 24, 2018 4:55 am
Delivery Date: 24 Aug 2018
Leaf Number: 022135

Re: New 40 kWh pack as replacement for 24 kWh pack

Thu Sep 06, 2018 3:50 am

Lothsahn wrote:
ybpvin wrote:You will need to reprogram the controller so that the car understands the actual range of distance.


Any idea how that would be done? Any links to where this is discussed? The difference in discharge curves for 30 and 40kwh packs is the real problem with regards to swapping cells.




Hello.
This question is difficult and did not meet on the forums.
Here is the author's latest video where the battery issue is discussed. https://www.youtube.com/watch?v=sWmiOxl0pdg&t=3s
Write a comment in English and he will answer you.

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