New 2021 Samsung 21700 50S with specifications

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vapcell Dennis
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New 2021 Samsung 21700 50S with specifications

Last year, Samsung had a small outflow of Samsung 50s. This year, it will be more, but it is still very limited

This is a 21700 5000mAh 25A continuous discharge battery, which has both capacity and power

zoulas
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I dont think these batteries will make it past the dewalt/makita/milwaukee and then the scooter companies and get to get to flashlight users.

Instead of introducing a new battery that we wont be able to buy, you should tell us how Samsung is increasing production so we can actually find some at decent prices.

texas shooter
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Thanks, most venders won’t tell you what’s under the wrapper.

GhostJoe
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I always wondered – are these outflow cells grade A? For these major manufacturers about 2% of production cells cannot meet the QC and where do these cells go?

Molicel has authorized dealers so grade A can be guaranteed if you buy from authorized dealers. However Samsung, Murata, LG and Sanyo/Panasonic do not have authorized dealers, can resellers’ description of grade A be really trusted? Even they are on Mooch’s trusted list? For re-wrapped cells, what grade of cells were used?

Also for Chinese brand cells about 4% of production cells cannot meet the QC.

GhostJoe
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And official CDR rating for Samsung 50S should be 20A (without temperature cut) and 35A (with 80℃ temperature cut). Don’t know why Vapcell claims 25A CDR

vapcell Dennis
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GhostJoe wrote:
And official CDR rating for Samsung 50S should be 20A (without temperature cut) and 35A (with 80℃ temperature cut). Don’t know why Vapcell claims 25A CDR

This is the 25A CDR marked in 50s specification

It was originally thought to be 20A

The specification shall prevail

vapcell Dennis
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GhostJoe wrote:
I always wondered – are these outflow cells grade A? For these major manufacturers about 2% of production cells cannot meet the QC and where do these cells go?

Molicel has authorized dealers so grade A can be guaranteed if you buy from authorized dealers. However Samsung, Murata, LG and Sanyo/Panasonic do not have authorized dealers, can resellers’ description of grade A be really trusted? Even they are on Mooch’s trusted list? For re-wrapped cells, what grade of cells were used?

Also for Chinese brand cells about 4% of production cells cannot meet the QC.

This is Grade A. the original packing is unopened

One batch, same date, batch production

Pajda cz
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Vapcell deserves recognition that they were able to stock samples of this particular cell. The cells I received last week are probably factory samples as they carry scratches on the tube? Other branded cells from Vapcell always came in perfect mechanical conditions. I tested three samples and their initial parameters correspond to the manufacturer`s specifications of this particular type, also parameter consistency is good.

Nominal (0.2C) capacity / IEC DCIR at 50% SoC measured at 25 °C in temperature chamber

5.0371 Ah / 14.1008 mOhm
5.0266 Ah / 13.9924 mOhm
5.0208 Ah / 13.9593 mOhm

For comparison I am adding the values of a new Samsung 40T3 model:

4.0944 Ah / 14.6298 mOhm

However, according to my measurements, I would rather label those 50S samples as 20A CDR, because at 25A CDR (5C) I measured the temperature of 74 °C at the end of the discharge in a temperature chamber with forced air circulation with temperature of 25 °C. This is significantly more than “established” 5C rated cells. For example 40T3 ends 5C discharge with 59 °C or 30Q6 with 61 °C under the same conditions.