Samsung INR21700-48G

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Pajda
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Samsung INR21700-48G

Post by Pajda » Sep 12, 2017 1:39 pm

After almost a year after presentation of INR21700-48G (High Energy 4800mAh cells in new 21700 format) they seems to be finally available on the retail market. I recently found them listed by Fasttech and IMR Bateries. I have already ordered few samples for some tests :)
Last edited by Pajda on Sep 14, 2017 1:12 am, edited 1 time in total.

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Re: Samsung INR21700-48G

Post by Hillhater » Sep 12, 2017 5:19 pm

Approx what price are you being quoted ?
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Pajda
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Re: Samsung INR21700-48G

Post by Pajda » Sep 13, 2017 3:53 am

I have ordered 4pack from Fasttech with total price of 36,81USD includung "free" shiping to EU (shipping costs in checkout costs another 1,7USD). Also they do not have them already on stock, they promise shipping in 7 business days. I am trying to get these cells for almost whole a year. They have them on stock on AkkuTeile in Germany but the price of 4 cells with shipping cost is 52,7Eur so I chose Fasstech and hope taht they will resupply them early :D

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Re: Samsung INR21700-48G

Post by Pajda » Sep 13, 2017 2:35 pm

Heh.. the 48G datasheet very quickly disappeared from the IMRBatteries web. I was surprised that they had put it on the web at all. :roll:

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Re: Samsung INR21700-48G

Post by Hillhater » Sep 13, 2017 5:37 pm

Sneaky !..
Did you by chance keep a copy ?
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Re: Samsung INR21700-48G

Post by neptronix » Sep 13, 2017 8:58 pm

Found this on google image search..
Low discharge.. 1-2C cell.. around 240-250whrs/kg.

Would be awesome for building a large pack with medium power levels ( 1000-2000w ) :)
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Re: Samsung INR21700-48G

Post by neptronix » Sep 13, 2017 11:10 pm

Found more data.. the cell is 0.35mOhm, so performance even at 1C will be putzy.
https://imgur.com/a/BLzZj
My first major build: 8T MAC motor on a Trek 4500.
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Re: Samsung INR21700-48G

Post by Hillhater » Sep 14, 2017 1:24 am

can we host those data sheets up under one of the sticky topics, or Wiki , to make it easy to reference. ?
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Re: Samsung INR21700-48G

Post by Pajda » Sep 14, 2017 1:29 am

Hillhater wrote:can we host those data sheets up under one of the sticky topics, or Wiki , to make it easy to reference. ?
This would be nice

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Re: Samsung INR21700-48G

Post by Pajda » Sep 14, 2017 1:29 am

And there are first power and capacity test: https://www.e-cigarette-forum.com/forum ... 0b.825429/ They confirms it is a High Energy structure cells as expected. So this cell is good for EVs and ESS with up to common 0,5C average power with only some short peaks. Also interesting is that this cell have lower standard charge rate of 0,3C than today most common 0,5C.

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Re: Samsung INR21700-48G

Post by ElectricGod » Nov 07, 2017 11:21 pm

I'm working on getting 40 of the 48G cells and 40 of the Sanyo INR21700 5000mah cells to mess with. I know this form factor is 100% bleeding edge right now, but I think it's going to make 18650's much cheaper. The charge densities and discharge rates will be in the new 21700's and the 18650 will have to get cheaper to compete since it won't be able to compete on capacity or discharge rates in a very short time frame. Give it a year and I bet you see 30Q's dropping by a dollar each.

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Re: Samsung INR21700-48G

Post by Pajda » Nov 08, 2017 3:29 pm

Very interesting. Can you please tell us where to find samples or datasheet of Sanyo INR21700 with 5Ah capacity?

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Re: Samsung INR21700-48G

Post by ElectricGod » Dec 04, 2017 5:50 pm

I've purchased 40 Samsung INR21700-48G. They have 2C discharge. According to the spec sheet this reduces their life span...whatever that means since it's not specific. At 5000mah and 1C, paralleling them will still result in good current supply. My blue scooter runs on used laptop cells scrounged from laptop battery packs. It's a 12P pack and assuming 2600mah that's 30 amps and I typically run at 2C max. The cells have never gotten warm from use. I bet 6-8 cells of the INR's in parallel will keep current load sufficiently low to not be a problem.

I'm making my decisions based on capacity per cell instead of discharge rates. I can plan around capacity or discharge rates easily enough either way.

Does anyone have any form of 21700's yet in their hands? What's your opinions so far?
Last edited by ElectricGod on Dec 13, 2017 4:36 pm, edited 1 time in total.

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Re: Samsung INR21700-48G

Post by Pajda » Dec 05, 2017 10:49 am

I have samples of INR21700-48G already waiting for lifetime tests. Unfortunately they arrived at the same time with samples of Tesla 85 kWh battery cells and Tesla cells were given priority.

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