# RE: LiFePo4 green cells are back $50 per cell
**URL:** https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974
**Category:** GEM Forum
**Created:** [June 8, 2020, 1:39am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974 "2020-06-08T01:39:24Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@svandgts](https://community.electricforum.com/u/svandgts)
#### Post date: [June 8, 2020, 1:39am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/1 "2020-06-08T01:39:25Z")
> [@LiFePo4 green cells are back $50 per cell](https://community.electricforum.com/t/lifepo4-green-cells-are-back-50-per-cell/18431):
>
> 25s make a great Gem pack. 2p25s even better (50 cells) Hardware included. Discount for shipping on a pallet. 10s modules 5s modules single cells 1000s sold, this is the last 300 available. [5s dimensions] [2000lb basket full1] [2000lb basket]
Hello,
I am looking to upgrade my newly acquired 2002 GEM with 25 of your cells.
Any recommendations before I start this (location, custom build tray, BMS, What onboard charger will I need etc… etc…?)
I have never done this so forgive me for asking trivial questions?
Thenk you for your help,
Hervé
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [June 8, 2020, 2:34am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/2 "2020-06-08T02:34:39Z")
Sorry, I’m sold out.
You will have to look for other options.
Chevy Volt, Bolt, or Spark work well.
Dave
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### Author:  [@svandgts](https://community.electricforum.com/u/svandgts)
#### Post date: [June 8, 2020, 2:43am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/3 "2020-06-08T02:43:58Z")
Ok Thank you
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### Author:  [@svandgts](https://community.electricforum.com/u/svandgts)
#### Post date: [June 11, 2020, 4:31am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/4 "2020-06-11T04:31:12Z")
I am considering these: [https://www.ebay.com/itm/124059612013?ul\_noapp=true](https://www.ebay.com/itm/124059612013?ul_noapp=true)
Any recommendation?
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [June 11, 2020, 12:13pm UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/5 "2020-06-11T12:13:22Z")
These are low amp 36v. What would you use them for?
Old Leaf cells do not have a good rep on forum.
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### Author:  [@svandgts](https://community.electricforum.com/u/svandgts)
#### Post date: [June 13, 2020, 5:04am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/6 "2020-06-13T05:04:12Z")
I am going to install those in my 2002 E4. My plan is to start with those 2 in series to get 72v between 50Ah/66Ah and see how it works. I may then also get a 48v kit and have them used in series with the 36v which will give me 84v 100Ah/136Ah depending on how much capacity are left in the cells I get. It looks to me to be a easily serviceable setup when I will be able to replace cells overtime. Should get the kit next week and will post pictures
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [June 13, 2020, 12:51pm UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/7 "2020-06-13T12:51:19Z")
Connecting bms controlled batteries in series, in general, will not work. Did you ask the builder?
Also, “60 Amp continuous discharging, 120 Amp peak discharge”. Not near enough.
If you want to use leaf cells, start over. IMO. They are cheap due to issues and market being flooded with them.
Easy to configure in 2p or 3p.
The correct smart bms 20s 400a is only $150.
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### Author:  [@svandgts](https://community.electricforum.com/u/svandgts)
#### Post date: [June 13, 2020, 8:16pm UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/8 "2020-06-13T20:16:40Z")
I am asking the builder
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [June 13, 2020, 9:21pm UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/9 "2020-06-13T21:21:46Z")
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### Author:  [@svandgts](https://community.electricforum.com/u/svandgts)
#### Post date: [June 14, 2020, 6:04am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/10 "2020-06-14T06:04:14Z")
This is what the builder answered: For 72V street Golf cart as most people do just series 2 of them and your voltage range would be 62V to 82V
Thanks
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### Author:  [@LithiumGods](https://community.electricforum.com/u/LithiumGods)
#### Post date: [June 14, 2020, 12:02pm UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/11 "2020-06-14T12:02:57Z")
You need minimum of 20 cells in series . So if I understand the ad correctly each black box is 5 cells and you get 2 boxes per order ? So you will need 2 orders for 4 boxes ? If so too expensive . If you get 4 boxes the price works . Leaf cells degrade quickly in warm weather . Nissan got sued for it . Seller states the cells are only 70% capacity left so you are only getting 46ah , Not enough .Ad also says indoor use only . BMS is rated to 120 peak . Your Gem will pull up to 350ah peak and easily 200ah plus continuous on hills . This BMS is not even close to what you need .
I was the first person to do Leaf cells in a Gem 5 years ago and I have done multiple . Be glad to help you out any way I can .
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [June 14, 2020, 12:05pm UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/12 "2020-06-14T12:05:08Z")
The auction is for 2 x 36v, so price is good.
But, sumtinwong!
“Smart BMS configuration:
60 Amp continuous discharging, 120 Amp peak discharge
45 Amp charging
60 Amp fuse”
Maybe they would trade for these, that would work good in a gem.
> **[Nissan Leaf Battery G2 Module Lithium Ion 8 volts 500 wh 66Amh 6 kWh Lot of 12...](https://www.ebay.com/itm/Nissan-Leaf-Battery-G2-Module-Lithium-Ion-8-volts-500-wh-66Amh-6-kWh-Lot-of-12/143317891810?hash=item215e697ae2:g:8gkAAOSwPsBds-gC)**
>
> 500 watt hour per module. Each Module has 4 cells ( 2 in Series and 2 in Parallel ). Storage temperature range -40 ～70 ℃. DO NOT short circuit the (+) and (-) in the wrong way around. 500 watts hour.
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### Author:  [@svandgts](https://community.electricforum.com/u/svandgts)
#### Post date: [June 14, 2020, 6:14pm UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/13 "2020-06-14T18:14:18Z")
We will see when the kit gets here next week and as I will have to assemble it and will have a chance to go thru everything and share with you guys. The battery modules in the kit are the same ones you are pointing to from that ebay seller. I should get 10 of them. Thank you for the help.
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [June 14, 2020, 8:03pm UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/14 "2020-06-14T20:03:44Z")
11 modules are good, 22 ideal.
We know exactly what they are and how they work.
The “kit” will be of little use. Just buy 11 or 12 modules.
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### Author:  [@svandgts](https://community.electricforum.com/u/svandgts)
#### Post date: [June 14, 2020, 8:20pm UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/15 "2020-06-14T20:20:54Z")
10-4 I am asking to get 22 modules instead of the kit. I will hopefully do this once the right way with your guidance as you have the experience
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### Author:  [@LithiumGods](https://community.electricforum.com/u/LithiumGods)
#### Post date: [June 15, 2020, 3:16am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/16 "2020-06-15T03:16:14Z")
Dont get the g1 cells they are really bad , G2 are a little better .
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### Author:  [@LithiumGods](https://community.electricforum.com/u/LithiumGods)
#### Post date: [June 15, 2020, 3:22am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/17 "2020-06-15T03:22:52Z")
Is there a reason you really want to use the leaf modules ?
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### Author:  [@svandgts](https://community.electricforum.com/u/svandgts)
#### Post date: [June 15, 2020, 4:12am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/18 "2020-06-15T04:12:07Z")
Those are G2 modules. I will eventually upgrade to newer modules when I find some. For now I am learning. I like that I can replace modules as they go bad. Looks like a good set up. Also the temperature is very stable where I live (65-85 year around)
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### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [June 15, 2020, 4:29am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/19 "2020-06-15T04:29:11Z")
Are you sure they are g2?..
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### Author:  [@svandgts](https://community.electricforum.com/u/svandgts)
#### Post date: [July 1, 2020, 8:13am UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974/21 "2020-07-01T08:13:49Z")
I decided to return the Leaf modules based kit I had ordered. It didn’t look right when it arrived. Now I just got front disk brakes and upgraded to a DQ charger. New Axles and control arm bushings also installed. Next will be Lithium when my batteries run out (3 years old Deka Dominators). Any suggestions as the members of this forum have already tried pretty much everything and done amazing builds 🙂
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