HKJ
(HKJ)
October 11, 2020, 6:02pm
1
thefreeman
(thefreeman)
October 11, 2020, 6:26pm
2
Thank you for the review.
stephenk
(stephenk)
October 11, 2020, 8:53pm
3
Thank you again for the review!
SubLGT
(SubLGT)
October 11, 2020, 11:39pm
4
Interesting to see that the positive contact is not as deeply recessed as on the Vapcell G50.
Vapcell INR21700 5000mAh G50 (Gold) 2020
[image]
Official specifications:
Model: G50 INR21700 5000mah 15A
Size: 21.1*70.5mm
Nominal voltage: 3.60V
End-of-charge voltage: 4.20V
End-of-discharge Voltage: 2.5V
Typical Capacity: 5000mAh (0.2C discharge)
Min capacity: 4900mAh (0.2C discharge)
Weight: Max:72g
Internal resistance: Max:15mOhm AC 1kHz
Standard Charge: 1000mA,CCCV 100mA cut-off
Quick Charge Current: 2500mA
Max Continuous Discharge Current: 15A
[image] …
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
(hasddie293)
October 12, 2020, 2:40am
6
I’m really appreciated works done by HKJ, tq.
powerslave
(powerslave)
October 12, 2020, 3:43am
7
Thank you for the review!
SubLGT
(SubLGT)
October 12, 2020, 4:30am
8
Mooch tested the M50A
Molicel Test
…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….
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.
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
(SKV89)
October 13, 2020, 2:08am
11
I’m wondering why this does not have a recessed top like the Vapcell 50G
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
(HKJ)
October 13, 2020, 5:25am
13
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).
Havok
(Havok)
October 13, 2020, 8:20am
14
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
(d_t_a)
October 13, 2020, 2:02pm
15
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
(Caleb)
October 15, 2020, 2:49am
16
Does anyone know where to buy the a Samsung 50G?
Agro
(Agro)
October 15, 2020, 5:38am
17
It’s interesting to see how close are the discharge curve shapes for 48G, 50E and 50G.
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
we have some 50G, liionwholesale have vapcell G50,it is samsung 50G