Test/review of Samsung INR21700-40T 4000mAh (Cyan)

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HKJ
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Test/review of Samsung INR21700-40T 4000mAh (Cyan)

Samsung INR21700-40T 4000mAh (Cyan)

DSC_0999

Official specifications:


  • Rated discharge capacity: 3900mAh
  • Standard discharge capacity: 4000mAh
  • Nominal voltage: 3.6V
  • Standard charge: CCCV, 2A, 4.20V, 200mA cut-off
  • Rated charge: CCCV, 6A, 4.20V, 100mA cut-off
  • Max. continuous discharge: 35A with temperature cut.
  • Max. continuous discharge: 45A with 80°C temperature cut.
  • Discharge cut-off voltage: 2.5V
  • Cycle life: 250 cycles to 60% at 6A charge and 35A discharge.

Samsung%20INR21700-40T%204000mAh%20(Cyan)-info

This is a high current with good capacity in the new 21700 format.

DSC_0996

DSC_1000DSC_1001

DSC_1002
DSC_1003

Samsung%20INR21700-40T%204000mAh%20(Cyan)-Capacity

The two cells tracks very well and capacity drops slowly with higher current. I had a slight problem with the B cell, my connection in the battery holder was not good enough and it got hot at 30A.

Samsung%20INR21700-40T%204000mAh%20(Cyan)-Temp-15.0

Samsung%20INR21700-40T%204000mAh%20(Cyan)-Temp-20.0

Samsung%20INR21700-40T%204000mAh%20(Cyan)-Temp-30.0

Samsung%20INR21700-40T%204000mAh%20(Cyan)-CapacityTimeHours

Samsung%20INR21700-40T%204000mAh%20(Cyan)-CapacityTime

Samsung%20INR21700-40T%204000mAh%20(Cyan)-Energy

Samsung%20INR21700-40T%204000mAh%20(Cyan)-PowerLoadTime

Samsung%20INR21700-40T%204000mAh%20(Cyan)-TripCurrent

Samsung%20INR21700-40T%204000mAh%20(Cyan)-Charge



Conclusion

It is a very good high current and capacity cell and looks to be one of the best at the current time in this size.



Notes and links

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Compare to 18650 and other batteries

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

DavidEF
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Yeah, this is what we were looking for in 21700 cells. Hopefully now we can get manufacturers to start making more flashlights in this size.

Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone.
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Henk4U2
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Thank you for this review.
Looks like the 30T by Samsung is now obsolete (if we forget about the price-tag for this moment).

I always think long and hard before I say something really stupid.

Agro
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Obsolete? It’s point of existence in the flashlight world was that it could drive lights harder than any other tested cell.
After 40T is tested, 30T still can drive lights harder than anything else.

So this is a very good cell, but I don’t see how it would make 30T obsolete.

JasonWW
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Henk4U2 wrote:
Thank you for this review.
Looks like the 30T by Samsung is now obsolete (if we forget about the price-tag for this moment).

No, no. The 30T, 40T and 48G are all brand new cells. They each have their advantages and disadvantages.

30T – 30A continous 3000mah
40T – 20A continous 4000mah
48G – 9A continous 4800mah

So they have a cell for every need. Thumbs Up

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

Modded S70S with MTN FET driver, RampingIOS (D4) and lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

HydrAxx
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JasonWW wrote:
Henk4U2 wrote:
Thank you for this review.
Looks like the 30T by Samsung is now obsolete (if we forget about the price-tag for this moment).

No, no. The 30T, 40T and 48G are all brand new cells. They each have their advantages and disadvantages.

30T – 30A continous 3000mah
40T – 20A continous 4000mah
48G – 9A continous 4800mah

So they have a cell for every need. Thumbs Up

The 48G is obsolete, its production was stopped by Samsung SDI and replaced by the 50G (5000mAh), stores that still sell 48G are just lucky not to have sold everything, but once their stock is exhausted it will not replenished. And the 40T is not a cell having a nominal discharge of 20A but 35 continuous amperes (this is the official datasheet that says it, not me) or 45 amperes continuous if the cell is kept below 80 ° C (see official datasheet). And for the 30T, it’s the same as the 40T, 35 continuous amps and 45 amps continuous if kept below 80 ° c. Always check your info before publishing, otherwise you mislead other people and this without wanting.

mrheosuper
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this is what i expect from 21700, higher discharge and capacity than 18650

Forgot my pen

eas
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And check the OP Smile

Is the 50T still 9A continuous? A bit more would be nice.

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wolfdog1226
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Just a thought here. I do not put 100% merit in the specs and data sheets that manufacturers list.

I have seen countless batteries reviewed by HKJ and other notable sources, where these specs were over rated and blown up.

I do not know what the real specs are for the aforementioned battery[ies].

I would believe an independent test before I would take the manufacturers number as if they are “Written in Stone”.

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

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Andrew_Debbie
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The battery is rated for 6A rapid charge too although it may shorten useable life.

All I need now is a reasonbly price 21700 light.

BlueSwordM
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@wolfdog, actually, their ratings are not false most of the time, if done by the original manufacturer

Let’s not forget manufacturers test capacity down to 2,5V, or even lower, while HKJ tests them down to 2,8V, and in a controlled environment with specific charge parameters.

I’m not saying HKJ is wrong. His testing method is more realistic and takes into account uncertainties. However, the manufacturers are not lying about their capacity at 0,2C down to 2,5V, most of the time of course.

firedome
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Thank you for the nice review.

“We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light.

-Plato

JasonWW
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HydrAxx wrote:
JasonWW wrote:
Henk4U2 wrote:
Thank you for this review.
Looks like the 30T by Samsung is now obsolete (if we forget about the price-tag for this moment).

No, no. The 30T, 40T and 48G are all brand new cells. They each have their advantages and disadvantages.

30T – 30A continous 3000mah
40T – 20A continous 4000mah
48G – 9A continous 4800mah

So they have a cell for every need. Thumbs Up

The 48G is obsolete, its production was stopped by Samsung SDI and replaced by the 50G (5000mAh), stores that still sell 48G are just lucky not to have sold everything, but once their stock is exhausted it will not replenished. And the 40T is not a cell having a nominal discharge of 20A but 35 continuous amperes (this is the official datasheet that says it, not me) or 45 amperes continuous if the cell is kept below 80 ° C (see official datasheet). And for the 30T, it’s the same as the 40T, 35 continuous amps and 45 amps continuous if kept below 80 ° c. Always check your info before publishing, otherwise you mislead other people and this without wanting.


I think it’s you who may have been mislead by the manufacturers. You seem to be mixing up the measurements.

There is continous output, like HKJ and Mooch measure, and then there is a different measurement which the manufacturers use and is misleading if you don’t read the fine print.

Continous discharge means you apply a load and it can go from fully charged to empty without exceeding “safe” temperature limits. HKJ will need to say what that is. I think 60°C to 70°C?

The manufacturers use a higher discharge rating that will exceed their own safe operating parameters, meaning it goes over 80°C. Just look at the tests above. Who is going to be monitoring their battery temperatures to know when to turn down the current? No one. So don’t be fooled by them.

Just like with every battery, of course you can exceed their continous output ratings, you just have to remember that it can only do this for a short amount of time.

Some wrappers are even flaunting “35A continous discharge” and putting “up to 80°C” in fine print. Please don’t be fooled by this. Some people already posted that Efest Orbtronic was superior because the wrapper said it was 35A continous. Again, don’t be fooled or mislead.

Mooch has given the 40T a slightly higher continous rating of 25A.

Mooch wrote:
This cell outperforms every 18650 and 20700 in regulated devices at up to about 20A-25A (60W-75W). Only the Samsung 30T hits harder for 21700’s. In my opinion though it is not a 35A battery, as rated in the datasheet.

At 35A continuous this cell reaches almost 90°C. That is too hot to ensure decent cycle life. A rating of 25A continuous brings it to about the same temperature that the Samsung 30T reaches at its rating.

At above 20A-25A (60W-75W) the Samsung 30T is the better performer anyway. The 40T is best at low to mid power levels where it can be the most efficient. The 40T is still an amazing 25A battery though!

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

Modded S70S with MTN FET driver, RampingIOS (D4) and lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

wolfdog1226
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JasonWW wrote:
HydrAxx wrote:
JasonWW wrote:
Henk4U2 wrote:
Thank you for this review.
Looks like the 30T by Samsung is now obsolete (if we forget about the price-tag for this moment).

No, no. The 30T, 40T and 48G are all brand new cells. They each have their advantages and disadvantages.

30T – 30A continous 3000mah
40T – 20A continous 4000mah
48G – 9A continous 4800mah

So they have a cell for every need. Thumbs Up

The 48G is obsolete, its production was stopped by Samsung SDI and replaced by the 50G (5000mAh), stores that still sell 48G are just lucky not to have sold everything, but once their stock is exhausted it will not replenished. And the 40T is not a cell having a nominal discharge of 20A but 35 continuous amperes (this is the official datasheet that says it, not me) or 45 amperes continuous if the cell is kept below 80 ° C (see official datasheet). And for the 30T, it’s the same as the 40T, 35 continuous amps and 45 amps continuous if kept below 80 ° c. Always check your info before publishing, otherwise you mislead other people and this without wanting.


I think it’s you who may have been mislead by the manufacturers. You seem to be mixing up the measurements.

There is continous output, like HKJ and Mooch measure, and then there is a different measurement which the manufacturers use and is misleading if you don’t read the fine print.

Continous discharge means you apply a load and it can go from fully charged to empty without exceeding “safe” temperature limits. HKJ will need to say what that is. I think 60°C to 70°C?

The manufacturers use a higher discharge rating that will exceed their own safe operating parameters, meaning it goes over 80°C. Just look at the tests above. Who is going to be monitoring their battery temperatures to know when to turn down the current? No one. So don’t be fooled by them.

Just like with every battery, of course you can exceed their continous output ratings, you just have to remember that it can only do this for a short amount of time.

Some wrappers are even flaunting “35A continous discharge” and putting “up to 80°C” in fine print. Please don’t be fooled by this. Some people already posted that Efest was superior because the wrapper said it was 35A continous. Again, don’t be fooled or mislead.

Mooch has given the 40T a slightly higher continous rating of 25A.

Mooch wrote:
This cell outperforms every 18650 and 20700 in regulated devices at up to about 20A-25A (60W-75W). Only the Samsung 30T hits harder for 21700’s. In my opinion though it is not a 35A battery, as rated in the datasheet.

At 35A continuous this cell reaches almost 90°C. That is too hot to ensure decent cycle life. A rating of 25A continuous brings it to about the same temperature that the Samsung 30T reaches at its rating.

At above 20A-25A (60W-75W) the Samsung 30T is the better performer anyway. The 40T is best at low to mid power levels where it can be the most efficient. The 40T is still an amazing 25A battery though!

@BlueSwordM.

This is what I meant. Jason was more detailed and factual than I was.

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

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BlueSwordM
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Yeah the manufacturers also take their specs to the limit, and are slightly misleading in terms of power ratings.

They usually don’t lie about capacity by their testing methods.

But yeah, they could be better.

JasonWW
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HydrAxx wrote:

The 48G is obsolete, its production was stopped by Samsung SDI and replaced by the 50G (5000mAh), stores that still sell 48G are just lucky not to have sold everything, but once their stock is exhausted it will not replenished.

This is interesting news. I had not heard about it, nor have I ever heard about the new 50G. Thanks for the update.

Some batteries stay in production many years before being replaced. You can buy Panasonic NCR18650B 3400mah everywhere, but that battery came out in mid 2014, if not earlier. So at least 4 years.

I think the 40T came out in late 2017, so only 1 year old and it’s already replaced. Hmmm.

I couldn’t find any info on the 50G, maybe you meant the 50E? It seems they are just coming out onto the market. None of the US stores I use carry them yet. I only see them for sale on ebay. I guess in the next few months they will start becoming more common.

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

Modded S70S with MTN FET driver, RampingIOS (D4) and lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

eas
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JasonWW wrote:
Who is going to be monitoring their battery temperatures to know when to turn down the current? No one. So don’t be fooled by them.

Given that every last cylindrical LiIon cell is specified and sold for use in some sort of managed application, like a battery pack, it is absolutely realistic and honest that their testing and specifications include caveats like temperature limits.

We’re the ones using cells outside their intended application. Don’t be fooled into thinking otherwise.

HJK and Mooches tests are invaluable not because they show the manufacturers up, but because they fill in the blanks between the manufactuers specs and what we need to know for our applications.

That the people wrapping/package and selling these cells are misrepresenting manufacturers specs is a separate issue. The blame for that falls on the wrappers/sellers, not the cell manufacturers.

This non-political signature is not non-political.

JasonWW
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Andrew_Debbie wrote:
The battery is rated for 6A rapid charge too although it may shorten useable life.

All I need now is a reasonbly price 21700 light.


This is common as well. There are different charge rates for every battery depending on whether you want max life or not. The capacity is going to slowly be reduced everytime you recharge it anyway, some charge rates reduce it a bit quicker than others.

21700 flashlights are slowly coming out. Most are pretty expensive though. I just bought the Sofirn C8F 21700 for $36 shipped including a 4000mah battery and a simple charger. I think this is the cheapest 21700 light I’ve seen so far.

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

Modded S70S with MTN FET driver, RampingIOS (D4) and lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

JasonWW
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eas wrote:
JasonWW wrote:
Who is going to be monitoring their battery temperatures to know when to turn down the current? No one. So don’t be fooled by them.

Given that every last cylindrical LiIon cell is specified and sold for use in some sort of managed application, like a battery pack, it is absolutely realistic and honest that their testing and specifications include caveats like temperature limits.

We’re the ones using cells outside their intended application. Don’t be fooled into thinking otherwise.


To clarify, I was refering to flashlight users such as all of us here. We don’t monitor battery temps in flashlights (unless we need to).

I’m sure these new higher ratings the manufacturers are using are more for vehicle use where they are water cooled and monitored closely. Or tool use or vacuum use etc… where temperatures can at least be monitored.

We are just low-tech bums. We have to take the battery out of our flashlight and measure the temperature by hand and go “Ewww boy, that sure feels hot!”. Lol

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

Modded S70S with MTN FET driver, RampingIOS (D4) and lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

wolfdog1226
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HERE is the:

Samsung INR21700-50E Rechargeable 10a High Drain Battery 5000mAh flat top.

“IF” those specs are right it is Only 10A Not 20/25A like the 40T.

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

JasonWW
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wolfdog1226 wrote:
HERE is the:

Samsung INR21700-50E Rechargeable 10a High Drain Battery 5000mAh flat top.

“IF” those specs are right it is Only 10A Not 20/25A like the 40T.



A modern high capacity battery is never going to match the output of a high current battery. The manufacturers are able to tweak their chemical mix to either maximize capacity or current or anywhere in between. This is why the 30T has the highest current, but the lowest capacity and the 50E has the highest capacity but lowest current. Then the 40T is right in the middle between current and capacity.

(I’m talking about continuous current ratings like HKJ and Mooch use)

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

Modded S70S with MTN FET driver, RampingIOS (D4) and lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

wolfdog1226
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^^^
Right.I understand that.

The reason I said that[10A only] is because Hydraxx said the 50T[50E?] is replacing the 40T. So one would assume it would be an Upgrade in capacity and output,,,,at least that is how I would interpret it.

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

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wolfdog1226 wrote:
^^^
Right.I understand that.

The reason I said that[10A only] is because Hydraxx said the 50T[50E?] is replacing the 40T.


He said 50G replaced 48G, but nobody can find anything about 50G.
wolfdog1226
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Pete7874 wrote:
wolfdog1226 wrote:
^^^
Right.I understand that.

The reason I said that[10A only] is because Hydraxx said the 50T[50E?] is replacing the 40T.


He said 50G replaced 48G, but nobody can find anything about 50G.
Your right!! My bad!! Shocked

,T, G, E,,,,,,,,,,It is getting all mixed up and confusing!

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

HydrAxx
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JasonWW wrote:
HydrAxx wrote:

The 48G is obsolete, its production was stopped by Samsung SDI and replaced by the 50G (5000mAh), stores that still sell 48G are just lucky not to have sold everything, but once their stock is exhausted it will not replenished.

This is interesting news. I had not heard about it, nor have I ever heard about the new 50G. Thanks for the update.

Some batteries stay in production many years before being replaced. You can buy Panasonic NCR18650B 3400mah everywhere, but that battery came out in mid 2014, if not earlier. So at least 4 years.

I think the 40T came out in late 2017, so only 1 year old and it’s already replaced. Hmmm.

I couldn’t find any info on the 50G, maybe you meant the 50E? It seems they are just coming out onto the market. None of the US stores I use carry them yet. I only see them for sale on ebay. I guess in the next few months they will start becoming more common.

No, I did say 50G, the 50E it, is a different version, with a different chemistry and a different life because it is originally intended for the electric vehicle industry specifically, the first versions of test ( TestBuild in Samsung jargon) with an inscription “EV21700-50G” on the cell, “EV” as you would guess for “Electric Vehicle”. And indeed you will find little reference to 50G because initially they were sold almost exclusively in closed market (reserved for professionals and industry), the only ones to my knowledge to have obtained a significant amount of these cells 50G is VapCell and still it did not last, they quickly replaced by LG M50 in their “VapCell Purple 21700 5000mAh 10A”: the first versions sold were Samsung 50G then once their stock of 50G exhausted, they passed on LG M50s that are equivalent in terms of performance (although the capacity of the M50 is a little better in practice of about 50-100mAh).

Here is the news confirming what I say about the Samsung 50G replaced by LG M50, on the VapCell website: http://www.vapcelltech.com/index.php/Show/index/cid/44/id/11 .html

And a photo of a cell “TestBuild” Samsung 50G with the inscription EV on its metal cylinder:

HydrAxx
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Pete7874 wrote:
wolfdog1226 wrote:
^^^
Right.I understand that.

The reason I said that[10A only] is because Hydraxx said the 50T[50E?] is replacing the 40T.


He said 50G replaced 48G, but nobody can find anything about 50G.

Treat me as a liar, it will be more direct and less cowardly on your part, seriously, I would win what to lie to you, for proof: A big French company of the energy field lists in its data the Samsung INR21700-50G: https: // www.arts-energy.com/fr/solutions/accumulateurs-li-ion/gamme-li-ion-power/, it’s still a crazy thing on this forum, as soon as we say something that other users do not know and we are recently registered on this forum, we are considered a liar, I am getting a little tired of proving my good faith, do I treat you as a liar or even I sub- hear, yet I do not know you?

Calmly, we’re all here to share our knowledge and debate, that’s how a community learns and evolves, not pulling around and being suspicious of each other.

lionheart_2281
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It’s easier to just disregard pretty much all of what he says as a rule of thumb

Pete7874
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HydrAxx wrote:
Pete7874 wrote:
wolfdog1226 wrote:
^^^
Right.I understand that.

The reason I said that[10A only] is because Hydraxx said the 50T[50E?] is replacing the 40T.


He said 50G replaced 48G, but nobody can find anything about 50G.

Treat me as a liar, it will be more direct and less cowardly on your part, seriously, I would win what to lie to you, for proof: A big French company of the energy field lists in its data the Samsung INR21700-50G: https: // www.arts-energy.com/fr/solutions/accumulateurs-li-ion/gamme-li-ion-power/, it’s still a crazy thing on this forum, as soon as we say something that other users do not know and we are recently registered on this forum, we are considered a liar, I am getting a little tired of proving my good faith, do I treat you as a liar or even I sub- hear, yet I do not know you?


Dude, relax. I did not call you a liar. All I stated is that we couldn’t find anything about 50G. Please don’t get offended by things I did not say. Smile
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I received my battery order from 18650batterystore.com and took capacity measurements with my Xtar VP4 Plus Dragon charger:

Samsung 21700 30T (not rewrap) : 3,171 mah

Efest 21700 5000mah: 5,035 mah (Mooch said it’s probably an LG M50 inside)

QSO Samsung 21700 40T (red wrapper): 4,091, 4,013 mah

Vapcell 21700 40T (gold color wrapper): 4,038 mah

Vapcell 21700 VTC6A (black color wrapper): 4,186 mah (This one has the QR code square at the bottom. Mooch said the older versions do not have it and have slightly less capacity)

QSO Sony 21700 VTC6A (black color wrapper): 4,055, 4,022 mah (This one is odd because the charge capacity are 4,2xx, which is 200mah higher than the measured discharge capacity. Usually the charge and discharge capacity are very close within 50mah. Mooch got 4,1xx mah on the samples from the same store. This also has the QR code. Maybe my charger terminated the discharge a little too soon on these)

I think the VTC6A might be a slightly better battery than the 40T just like the VTC6 is better than the 30Q. Mooch rates the VTC6A at 30A continuous. I hope HKJ can test the VTC6A soon so we can have it in the comparator

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HydrAxx wrote:

Treat me as a liar, it will be more direct and less cowardly on your part, seriously,

It’s better to calm down. Nobody it trying to get you. We are just trying to learn. We flashlight guys don’t usually learn of a new battery until it’s available for retail sales so we can be a bit behind the times.

Do you have any idea of the difference between the 50G and 50E? Maybe they are the same battery just sold to different markets? I really can’t see any difference. They should both have the same capacity and current output.

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

Modded S70S with MTN FET driver, RampingIOS (D4) and lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

HydrAxx
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JasonWW wrote:
It’s better to calm down. Nobody it trying to get you. We are just trying to learn. We flashlight guys don’t usually learn of a new battery until it’s available for retail sales so we can be a bit behind the times.

Do you have any idea of the difference between the 50G and 50E? Maybe they are the same battery just sold to different markets? I really can’t see any difference. They should both have the same capacity and current output.

That’s what a technician from QB told me: The 50G and the 50E, differs from each other by their respective chemistries which are different as well as their lifetime (depending on the discharge levels in amperes , depending on the use their life cycles will be different). Otherwise, yes for the specifications in general they are the same for both: Nominal 5000mAh and 10A continuous discharge. The 50E is officially intended for use in electric vehicle batterypacks (in short, they are certainly optimized for this use).

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