Hi Steve,
I have two sources of good batteries:
1. Dismantlers, taking battery from a young crashed Leaf (typical 2015)
2. Buying a car that qualified for warranty replacement, which gives
brand new battery.

I just happened to recently buy a Leaf that received a brand new 24kWh
battery in Feb 2017
Which I plan to install in a Leaf with degraded battery that someone
wants to give a new life
(the original interest fell through, but I went ahead and jumped on the
opportunity to buy a
New battery anyway)

The only way that a shade tree mechanic can replace a battery and not
mess with the Nissan
Leaf systems, is to physically swap the modules from one battery into
the other.
NOTE that the BMS wiring is mechanically compatible (plug fits socket)
but the electrical
Signal layout is totally different between early and later Leaf
batteries, so you *have to*
Swap the BS wiring on the modules to keep the wiring belonging to the
BMS in the car.
Others have tried to cut corners and ended up with letting the smoke out
of the BMS.
This would be fatal for the car, except that it is possible to remove
the memory from one
BMS (even after smoking it) and putting it onto another BMS to restore
the Leaf to operational state,
Since it checks the identity of the BMS (which is stored in the memory
chip)

There is a fellow who has reverse engineered the BMS communication
enough to claim that he can
Create a filter processor board that will sit in between the CAN bus to
the battery and intercept
The messages that would disable the Leaf if it checks the battery
identity.
But that would mean adding a computer board to a car in addition to
swapping its battery,
So that it a bit of a nasty kludge and not acceptable for a customer car
that needs to be able 
To use the Nissan service, which will immediately spot the incompatible
hardware.

Hope this clarifies,
Cor. 

-----Original Message-----
From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Steve Clunn via
EV
Sent: Sunday, May 21, 2017 7:14 AM
To: ev@lists.evdl.org
Subject: [EVDL] Buying new leaf batteries

Hi Cron van dar water,  where you able to buy a new leaf battery without
talking the leaf into the dealer and having them install it?
Steve Clunn
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20170521/7e0b
c280/attachment.htm>
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag
racing at NEDRA (http://groups.yahoo.com/group/NEDRA)

_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Read EVAngel's EV News at http://evdl.org/evln/
Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)

Reply via email to