Non OEM Leaf battery upgrade?

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brunohill
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Re: Non OEM Leaf battery upgrade?

Post by brunohill » Tue, 29 Jan 2019, 20:35

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 » Tue, 29 Jan 2019, 21:12

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 » Tue, 29 Jan 2019, 21:18

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 » Tue, 02 Jul 2019, 18:28

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?

Post by jonescg » Wed, 24 Jul 2019, 15:35



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

Post by antiscab » Wed, 24 Jul 2019, 23:25

Blimey, that's amazing. 44kwh.

I wonder what cells they're using
Matt
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2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
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Re: Non OEM Leaf battery upgrade?

Post by brendon_m » Thu, 25 Jul 2019, 05:01

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

Post by francisco.shi » Thu, 25 Jul 2019, 11:32

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 » Thu, 25 Jul 2019, 12:07

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?

Post by francisco.shi » Thu, 25 Jul 2019, 12:26

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?

Post by jonescg » Thu, 25 Jul 2019, 12:37

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 » Thu, 25 Jul 2019, 12:41

So 96s2p of 3.6v 63ah cells gives 44kwh

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Re: Non OEM Leaf battery upgrade?

Post by brunohill » Thu, 25 Jul 2019, 21:54

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



Oid Polar
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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?

Post by esyjam » Sun, 01 Sep 2019, 02:30

I would also say definitely LG E63 Batteries.

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Re: Non OEM Leaf battery upgrade?

Post by esyjam » Wed, 11 Sep 2019, 02:53

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

Post by doggy » Sun, 15 Sep 2019, 12:07

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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