Samsung 25R/LG 18650HE2/ Sony VTC5 high power 18650 battery

Batteries, Chargers, and Battery Management Systems.
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Ebikebert   100 W

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Samsung 25R/LG 18650HE2/ Sony VTC5 high power 18650 battery

Post by Ebikebert » Feb 12 2014 8:14pm

These are new cells for high power applications that have both more capacity and more punch. I have attached some data sheets showing some results for these cells from the manufacturers. Both of these cells have a max continuous discharge of 20A and a max pulse of 35A while still having 2500mah of capacity! :twisted: These cells are great for those who want an alternative to lipo with less of a risk for catastrophic fires. For anyone who wants to run high power these cells are great for that.
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130730_Technical Information of LG 18650HE2 %281%29 (1).pdf
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131101_Introduction of INR18650-25R.pdf
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Allex   1 GW

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Allex » Feb 13 2014 5:13pm

Interesting, you forgot to add Samung sheet.

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by 999zip999 » Feb 13 2014 5:21pm

Price ?

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ridethelightning   1 MW

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by ridethelightning » Feb 13 2014 5:23pm

price. definately need price.

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Ebikebert   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Ebikebert » Feb 13 2014 9:47pm

Allex wrote:Interesting, you forgot to add Samung sheet.

it is there under the picture

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Ebikebert   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Ebikebert » Feb 13 2014 9:50pm

Prices from alibaba.com seller eva $4.35 for the 25R batteries $4.25 for the LG cells both are moanufactured in Korea and ship from the shenzen china port. I asked for proof of purchase for the cells from the manufacturer (LG Chem/Samsung SDI) and they provided me with the documents showing their purchases for the cells. Attached are the documents for proof of purchase so these should be legitamate cells from a legitamite reseller. I also asked about a tab welding service to put the desired number of cells in parallel to make pack building easier and they said they have a factory that has the ability to do this also. Hope this helps you guys find good quality cells for your battery packs. :D
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HE2 INV PKL.pdf
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25R INV PKL.pdf
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trevc2   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by trevc2 » Feb 13 2014 9:55pm

I wonder what the odds are like that you're actually getting authentic and fresh 25R's? Price seems pretty cheap.
Ebikebert wrote:Prices from alibaba.com seller eva $4.35 for the 25R batteries $4.25 for the LG cells both are moanufactured in Korea and ship from the shenzen china port.

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Ebikebert   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Ebikebert » Feb 13 2014 9:56pm

check above posting

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trevc2   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by trevc2 » Feb 13 2014 10:01pm

Thanks, I know. I guess I'm just a bit paranoid buying Alibaba/China. There's far more motivation for most of these guys to sell re-wrapped cells than legit (with much narrower margins).

Can you please post a link to the seller? Any reason the cell photo is from a different Alibaba seller? ( http://listman.en.alibaba.com/)
Ebikebert wrote:check above posting

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Ebikebert   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Ebikebert » Feb 13 2014 10:05pm

LG cells: http://evva.en.alibaba.com/product/1536 ... 00mAh.html

25R Samsung cells http://www.alibaba.com/product-gs/13530 ... ttery.html

from what i can tell they are one of the biggest resellers for these batteries on Alibaba

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trevc2   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by trevc2 » Feb 13 2014 10:17pm

Ebikebert wrote:LG cells: http://evva.en.alibaba.com/product/1536 ... 00mAh.html

25R Samsung cells http://www.alibaba.com/product-gs/13530 ... ttery.html

from what i can tell they are one of the biggest resellers for these batteries on Alibaba
Nice to have options, the 25R sounds pretty decent. I wonder what shipping cost is like? The mention delivery with 45 days.

Edit: Just noticed this line too: "OEM orders are available (battery pack, battery with spot welding ect,)"

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Ebikebert   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Ebikebert » Feb 13 2014 10:39pm

sorry, forgot to post but i got a shipping quote for 100 cells is $85 to ship to the U.S.

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trevc2   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by trevc2 » Feb 14 2014 4:56am

Hello Mr.Trevor, thanks for your inquiry.
The Samsung INR18650-25R cell unit price:USD4.85. QTY:250PCS. Lead time:45-60days.
Also we have LG 18650HE2 2500mAh high power cells stock, are you interesting?

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Ebikebert   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Ebikebert » Feb 14 2014 6:51am

Hello Alberto, Glad to receive your inquiry.
The Samsung INR18650-25R cell unit price:USD4.35,QTY:100pcs.exw-Shenzhen.
Also we have LG 18650HE2 2500mAh high power cells stock, same technical parameters like Samsung INR18650-25R, unit price:USD4.25. We can send datasheet to you if you need.

they just like me better :lol:

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trevc2   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by trevc2 » Feb 14 2014 7:22am

Ebikebert wrote:Hello Alberto, Glad to receive your inquiry.
The Samsung INR18650-25R cell unit price:USD4.35,QTY:100pcs.exw-Shenzhen.
Also we have LG 18650HE2 2500mAh high power cells stock, same technical parameters like Samsung INR18650-25R, unit price:USD4.25. We can send datasheet to you if you need.

they just like me better :lol:
Perhaps, but are you interesting? :)

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Ebikebert   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Ebikebert » Feb 14 2014 8:16am

People call me the most interesting man in the world.
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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Matt Gruber » Feb 14 2014 10:00am

do they have a built in thermal fuse?

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by circuit » Feb 14 2014 10:04am

Matt Gruber wrote:do they have a built in thermal fuse?
Thermal fuse (PTC) is absolutely no use for packs above 30V.
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Ebikebert   100 W

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Ebikebert » Feb 14 2014 10:14am

These are all unprotected 18650 cells. There is no need for protected individual cells when you can use a bms or a cycle analyst to moniter the battery characteristics.

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Matt Gruber » Feb 14 2014 10:47am

these cells are not acceptable to me due to my high standards for simplicity and safety. They sound like nice cells for racing or distance contests by risk takers.
.
most users of Konions are above 30 v so that comment by circuit sounds like nonsense. How does each cell know the total pack volts?
.
how does a bms stop a cell from a short? say you have a 10p group of cells that one, just one shorts, say when you fall off the bike avoiding a car door, and the + tab is smashed into the - case? So tell me how this rube goldberg bms can prevent a massive discharge on the one cell, and the entire 10p? For those that don't know of rube goldberg, he made complicated machines that did simple tasks. In this case, a cell fuse blows, with Konions, and stops the discharge before the cell gets hot. Now who will explain how the bms does this simple task?

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Ebikebert » Feb 14 2014 1:06pm

Maybe you can think of a way to implement safety into the battery pack like the rest of us do. Fyi all 18650 have burst caps in case of a short which should never occur even in a crash If the pack is built well. If the pack is made well which should always be your intention you will include proper spacers to keep thermal management under control like these. Maybe you can even use a beefy fuse like this on the power leads. And maybe you can even put it in a waterproof case like this with padding to protect the cells in case of a crash. It really is not rocket science. And please dont downplay these cells they really are amazing for e-bike use so please no negative comments im just trying to help you guys find some good cells.
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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Punx0r » Feb 14 2014 3:15pm

Matt Gruber wrote: most users of Konions are above 30 v so that comment by circuit sounds like nonsense. How does each cell know the total pack volts?
I imagine it's because you have a teeny-tiny airgap trying to interupt a relatively high DC voltage.

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by Allex » Feb 14 2014 3:37pm

Matt, tells us which cells do you prefer?

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by trevc2 » Feb 14 2014 6:02pm

How do Sony/Konions offer more protection than these? (no debating, just genuinely curious as I wasn't aware they had any built-in protection circuit).

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Re: Samsung 25R/LG 18650HE2 high power 18650 batteries

Post by trevc2 » Feb 15 2014 12:28am

Hello Trevor,
OK, we can provide Samsung INR18650-25R cell to you and price is USD4.35 , but QTY:2000pcs. Because this is new model, we just buy this model in the first time.
The difference in quotes we're seeing is interesting. I wonder what's up with that?

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