LG INR21700-M50LT - Is is a new battery ?

I saw on Nkon a new battery :

https://eu.nkon.nl/rechargeable/li-ion/21700-20700-size/lg-m50lt.html

Is this a new version of the LG 50T ?

The price is correct (less than 4€) and they indicate a 14.60 A discharge current.

I did not find a review for this model, any info ?

Yes, it is a new cell, and its latest commercial user is actually Tesla for their updated M3/MY packs.

It is an upgraded version of the original M50 in basically every way.

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That is interesting, i wonder how many cycles its rated for.

Many subvariants were available in the LG “M50”production line. The first “M50” was rated for 500 cycles (LG product spec info) with relatively high IR, then comes M50T with only 300 cycles (LG product spec info) and the same IR. The latest subvariant I know is “M50L” and “M50LT” which should deliver 1000 cycles (rumors) and ca 30% lower IR. M50LT is very good cell in its category and now it is available at an interesting price. You can check the results of ongoing cycle life tests on another discussion forum.

I tried googling it but only found one reference which is from a less then distinguished website.

I believe it’s this website.

Your link appears to only show 150 cycles for this battery.

This is probably the reason.

I was hoping for a datasheet from LG.

I do not have datasheet for LG M50 “L” line, only for older M50 model and then for M50T. The info about 1000 cycles was released by some distributors and of course LG has to compare the offer with the competition, where for example the original Samsung 50E model was also rated for 500 cycles only, but the newer 50G version already has 1000 cycles in its datasheet.

Hello, could you advise me on the choice of cells? I decide between “Samsung INR21700-48X 4650mAh - 9.6A CLEAR WRAP” and “LG INR21700-M50LT 4890mAh - 14.4A”. While LG does not have a datasheet. I need a battery for an electric scooter, which has a large current. That’s why I need the “hardest” cells. Well thank you :slight_smile:

Jaro…welcome to BLF!

Do you have an idea of how much current your scooter draws? Important to know that if possible.

I would think you might need a cell with higher current deliver (a high drain cell) like the Samsung 40T or Molicel P42A. They list with capacities of around 4000mAh but they are able to give more juice where the cells you listed will suffer from higher voltage drop and reduced capacity when asked to provide more amps. The Sofirn 4000mAh battery (black wrapper but not the 5000 version) is about the same, good cell. Generally the cells that state the highest mAh capacity for a given cell size can’t provide quite as much current, sometimes it matters, sometimes it doesn’t, but if they are worked hard you and don’t fall flat on their faces, they may only end up giving you the same capacity as the high drain cell anyway.

Sony/Murata also has a good 21700 if you find that one available (the Samsung and Moli are a little better).

@JaroWD, if I had to choose, I’d get the LG INR21700-M50LT since it has lower internal resistance, and therefore, higher power capabilities.

Thank you for the explanation :slight_smile:
But I had to decide and I got a Samsung. Those LG cells have five different specified parameters on about five different pages, while the Samsungs have been tested and meet my requirements. Well thank you

Mooch reviewed these and mentioned the following

“The top contact metal is also thinner than most cells and the “legs” coming down from it are narrow so I recommend not using this cell where there is a lot of pressure on the top contact.”

I’m guessing that these will be no good for flashlights, unless you add a solder blob or a button to reinforce it. Dropping the flashlight has a very high chance of denting it in.

Yeah, looking at the photos it is noticeably thinner than most cells.

They are rated for 1000 cyles when the recommended 4.10 charge voltage is used. Theres nothing new here other than how they were rated lol. Or if it is better it will be hard to compare to cells tested previously at the usual 4.2 without doing your own tests.

I got some for a lr60 nitecore camping light so hopefully should last me a weekend camping for the next decade.

A draft data sheet is posted here and mentions the reduced voltage to use to get the extra cycles.

Heres some gumpf that im sure most people know but that mentions how most cells go from 300/500 to 600/1000 cycles at 4.1v

LG M50LT is currently probably the best cell in the HE category in terms of cycle life. In general, LG production can be relied on in this parameter, regardless cylindrical or pouch design. On the other hand, most of the competition is not far behind.

You can check results of 1000 cycle life test for community at another forum.

Ok so what cycles does it get when charged to 4.2v like every other manufacturer/spec sheet. Then you can make a decent comparison. Im sure everyone else will soon be jumping on the 4.1 boat soon though lol

Don’t buy LG cells. Don’t sell LG cells. Be safe.