Non OEM Leaf battery upgrade?

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brunohill
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Re: Non OEM Leaf battery upgrade?

Post by brunohill »

192 E63 LG Batteries (the ones Francisco is using) can be made to fit in a leaf battery box. I guess that makes the battery pack twice the original capacity.
Possibly premade packs. 10 packs x 18 batteries and 2 packs of 6 x batteries
Last edited by brunohill on Tue, 29 Jan 2019, 21:26, edited 1 time in total.
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Re: Non OEM Leaf battery upgrade?

Post by jonescg »

Yeah for sure - the energy density of those cells is very impressive.

I'm just trying to find the quickest approach and I think prismatics would be it. I reckon you could also use 18650 cells and a Tesla-style cooling loop, but it's all just weeks and weeks of work. My aim is to swap them out in a day if possible.
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Re: Non OEM Leaf battery upgrade?

Post by brunohill »

jonescg wrote: Fri, 11 Jan 2019, 13:06 https://www.youtube.com/watch?v=d-ka4-mG_0I
In this video the guy explains how retaining the vehicle's original BMS was the easiest way to keep the vehicle's onboard computer happy.
So I might try and re-pack a Leaf battery with a new BMS and wiring, but have it so you can swap the BMS at the last minute.
Looks like this confirms the problem and provides the answer http://evsenhanced.com/products/hv-batt ... ring-tool/
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Re: Non OEM Leaf battery upgrade?

Post by brunohill »

I am not sure how his extender battery boxes would go in the sunny summers here but his experiments and CANbus knowledge would sure be a useful resource.

https://www.youtube.com/watch?v=MC1NBwZICrQ
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Re: Non OEM Leaf battery upgrade?

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Now this looks very promising!
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Re: Non OEM Leaf battery upgrade?

Post by antiscab »

Blimey, that's amazing. 44kwh.

I wonder what cells they're using
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Re: Non OEM Leaf battery upgrade?

Post by brendon_m »

Going by what he said they are LG chem pouch cells that are "numpt" kwh
But the box says 170wh
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francisco.shi
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Re: Non OEM Leaf battery upgrade?

Post by francisco.shi »

They are probably the LG 63Ah.
They are the only cells that I know of that have the terminals on opposite sides. I have been looking for other pouch cells with terminals on opposite sides and I haven't been able to find any.
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Re: Non OEM Leaf battery upgrade?

Post by brendon_m »

170wh at 3.6v (my guess is they are ncm cells because they use the original bms) is 47ah.
So 44kwh at 315v is 140ah that makes it 88s3p
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Re: Non OEM Leaf battery upgrade?

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At 3:33 on the video you can see the cells with a size reference and the text. I can't see the part numbers but they look exactly the same as the LG63 cells I have and if they are LG they will be the 63Ah because the 63Ah are the only cells LG makes that have the terminals on opposite sides.
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Re: Non OEM Leaf battery upgrade?

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I see 179 Wh on the side of the box, but yes I suspect they are the LG63 cells. A Leaf needs multiples of 96 of them.
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Re: Non OEM Leaf battery upgrade?

Post by brendon_m »

So 96s2p of 3.6v 63ah cells gives 44kwh
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Re: Non OEM Leaf battery upgrade?

Post by brunohill »

bruno hill
bruno hill
12 hours ago
@Oid Polar Are they LG E63 batteries?



Oid Polar
Oid Polar
7 hours ago
@bruno hill out of the availability list from here: http://queenbattery.com.cn/our-products ... -cell.html yes, they are e63 - there are no alternatives made by LG Chem.
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Re: Non OEM Leaf battery upgrade?

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I would also say definitely LG E63 Batteries.
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Re: Non OEM Leaf battery upgrade?

Post by esyjam »

Testing Package has arrived. About 8Kwh of usable Energy.
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Re: Non OEM Leaf battery upgrade?

Post by doggy »

LG E63 are the same ones used in the Renault Zoe which has the same 96sp2 configuration and the same kWHrs (45, 41 usable, 40 claimed= Z.E.40)
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Re: Non OEM Leaf battery upgrade?

Post by RV6 »

Hi Guys, I hope the upgrade is all going well. Have just purchased 24kw version leaf and intend to do an upgrade, be it a direct replacement with a larger genuine pack with a man in the middle CAN BUS adaptor ( thats if I can source a battery ) or failing that I will try to build my own pack. Was wondering how progress is going with the LG cells ?
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Re: Non OEM Leaf battery upgrade?

Post by brunohill »

antiscab
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Re: Non OEM Leaf battery upgrade?

Post by antiscab »

so he cut the cans open to replace the pouch cells

That looks like a lot more effort than I would have thought necessary
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Re: Non OEM Leaf battery upgrade?

Post by brunohill »

It may be easier than replacing the bus bars and BMS wiring. Less chance of making a wiring error also.
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brunohill
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Re: Non OEM Leaf battery upgrade?

Post by brunohill »

There should even be 6 mm of room in the middle of the new nodule for a cooling plate. To fix the display you could use this... https://www.tindie.com/products/muxsan/ ... rt-rev-25/ once you work out how to program it.
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Re: Non OEM Leaf battery upgrade?

Post by brunohill »

brunohill wrote: Sat, 22 Feb 2020, 09:35 Jesus will save your Nissan Leaf.

Another cell swap...
https://forococheselectricos.com/2020/0 ... de-lg.html
https://forococheselectricos.com/2020/0 ... uidos.html
... But if the BMS has not been reprogrammed to suit there cold be some issues.
https://www.youtube.com/watch?v=QefdMYBTXZ8
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Re: Non OEM Leaf battery upgrade?

Post by brunohill »

An 18650 41 kWh replacement battery.
https://www.youtube.com/watch?v=gBWRZQv ... e=youtu.be
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Re: Non OEM Leaf battery upgrade?

Post by brunohill »

Jesus, he has done it.
64 kWh LG chem battery upgrade for old LEAF
But I think he may have a few issues to resolve.
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francisco.shi
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Re: Non OEM Leaf battery upgrade?

Post by francisco.shi »

The only problem is no cooling.
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