Test/review of Samsung INR21700-50G 5000mAh (Green)

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HKJ
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Test/review of Samsung INR21700-50G 5000mAh (Green)

Samsung INR21700-50G 5000mAh (Green)
DSC_3798
Official specifications:


  • Capacity: 5000mAh

Samsung%20INR21700-50G%205000mAh%20(Green)-info
Samsung high capacity 21700 cells
DSC_3797
DSC_3799 DSC_3800
DSC_3801
DSC_3802
Samsung%20INR21700-50G%205000mAh%20(Green)-Capacity
The two cells tracks perfectly, they handle 15A nicely. It looks like they must be drained fairly low to get full capacity.
Samsung%20INR21700-50G%205000mAh%20(Green)-Temp-10.0
Samsung%20INR21700-50G%205000mAh%20(Green)-Temp-15.0
They may handle 15A nicely, but they do get rather warm doing it.
Samsung%20INR21700-50G%205000mAh%20(Green)-CapacityTimeHours
Samsung%20INR21700-50G%205000mAh%20(Green)-CapacityTime
Samsung%20INR21700-50G%205000mAh%20(Green)-Energy
Samsung%20INR21700-50G%205000mAh%20(Green)-PowerLoadTime
Samsung%20INR21700-50G%205000mAh%20(Green)-TripCurrent
Samsung%20INR21700-50G%205000mAh%20(Green)-Charge
Discharge-Samsung%20INR21700-50G%205000mAh%20%28Green%29-pulse-1.0%2010%2010-IR
Conclusion
The batteries looks good with lot of capacity and are fairly good at delivering current.
Notes and links
The batteries was supplied by Vapcell for review.
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
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries

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

thefreeman
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Thank you for the review.

stephenk
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Thank you again for the review!

SubLGT
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Interesting to see that the positive contact is not as deeply recessed as on the Vapcell G50.

http://budgetlightforum.com/node/73535

Superstocker
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Thanks HKJ! Do you have plans to test the Molicel M50a? I’m curious to see how it compares to this. Thanks for all your work testing.

hasddie293
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I’m really appreciated works done by HKJ, tq.

In search of the most ideal flashlight in town:
1. BRIGHTNESS
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powerslave
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Thank you for the review!

SubLGT
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Superstocker wrote:
Thanks HKJ! Do you have plans to test the Molicel M50a? I’m curious to see how it compares to this. Thanks for all your work testing.

Mooch tested the M50A
Molicel Test

Quote:
…This Molicel performed well, beating the Samsung 50E, but not quite matching the performance of the Samsung 50G (which Vapcell rewraps as the G50). For comparison, the Samsung 50E delivered 10.3Wh of energy at 10A, the Molicel M50A delivered 11.3Wh, and the Samsung 50G delivered 12.2Wh. This Molicel’s 15A continuous current rating seems reasonable but I recommend staying at 10A or lower to increase efficiency and cycle life.

The capacity of the two cells I tested was 4968mAh and 4998mAh, easily meeting Molicel’s minimum capacity spec of 4800mAh….

Henk4U2
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My first thought was: wasn’t this tested before.
Then I noticed that was the 50E, and this is the 50G.

Many thanks for all your testing.
I never buy anything without looking first if you have tested it. Grad

You are a flashaholic if you are forced to come out of the closet, to make room for more flashlights.

Superstocker
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SubLGT wrote:
Superstocker wrote:
Thanks HKJ! Do you have plans to test the Molicel M50a? I’m curious to see how it compares to this. Thanks for all your work testing.

Mooch tested the M50A
Molicel Test

Quote:
…This Molicel performed well, beating the Samsung 50E, but not quite matching the performance of the Samsung 50G (which Vapcell rewraps as the G50). For comparison, the Samsung 50E delivered 10.3Wh of energy at 10A, the Molicel M50A delivered 11.3Wh, and the Samsung 50G delivered 12.2Wh. This Molicel’s 15A continuous current rating seems reasonable but I recommend staying at 10A or lower to increase efficiency and cycle life.

The capacity of the two cells I tested was 4968mAh and 4998mAh, easily meeting Molicel’s minimum capacity spec of 4800mAh….

Thanks for sharing! I was hoping the Molicels would be slightly better. Looks like they might be slightly better for high drain applications over 10A. Thanks again!

SKV89
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I’m wondering why this does not have a recessed top like the Vapcell 50G

vapcell Dennis
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Thank you very much for HKJ’s test

But I have a question

we compared the vapcell G50 with the Samsung 50g, which is the same cell

Curve comparison also shows that

But vapcell G50 was cut off immediately during 15A discharge. Was the temperature too high to prevent the discharge? Why does the same cell have this difference

thank you

HKJ
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vapcell Dennis wrote:
But vapcell G50 was cut off immediately during 15A discharge. Was the temperature too high to prevent the discharge? Why does the same cell have this difference

It was a temperature cut-off, but exactly why it happen to the Vapcell and not the Samsung I cannot explain.
I can see the ambient temperature is about 1°C cooler for the Samsung, that is hardly enough to explain it. Other reasons can be different placement of temperature sensor and different connection resistance (Higher resistance would produce more heat).

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Havok
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SKV89 wrote:
I’m wondering why this does not have a recessed top like the Vapcell 50G

Same thing with my Epoch 21700. Recessed top. It says 50G on the can after I removed the label.

Mine are stamped: 2J23 => Feb 03, 2019

HKJ has 2J84 => Aug 04, 2019

Maybe they made a revision, and we have V1?

***Edit***

Just noticed on HKJs’.. it has a 2 on it before the date code “2 [space] 2J84”

Maybe that means 50G Revision 2. Just like how new Samsung 30Q’s have a 6 on ‘em. “6 [space] KH1T”. Revision 6 of the 30Q?

Just a theory.

d_t_a
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SubLGT wrote:
Interesting to see that the positive contact is not as deeply recessed as on the Vapcell G50.

http://budgetlightforum.com/node/73535

The Vapcell G50 I got don’t look recessed either.. could it be there are a few different variations of the Samsung 50G, one variant having a top that’s more recessed and another that isn’t that recessed?

Caleb
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Does anyone know where to buy the a Samsung 50G?

Agro
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It’s interesting to see how close are the discharge curve shapes for 48G, 50E and 50G.

vapcell Dennis
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d_t_a wrote:
SubLGT wrote:
Interesting to see that the positive contact is not as deeply recessed as on the Vapcell G50.

http://budgetlightforum.com/node/73535

The Vapcell G50 I got don’t look recessed either.. could it be there are a few different variations of the Samsung 50G, one variant having a top that’s more recessed and another that isn’t that recessed?

For the same cell, the positive pole is slightly concave, but it is not obvious

Samsung cell is a big international brand, all of which are consistent in appearance

Unless Samsung is customized for some big companies

vapcell Dennis
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Caleb wrote:
Does anyone know where to buy the a Samsung 50G?

we have some 50G, liionwholesale have vapcell G50,it is samsung 50G