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LG F1L vs Panasonic NCR18650B capacity test - the 3400mAh Li-ion cells' battle
#1
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Hi guys!

Panasonic NCR18650B is probably the most popular Li-ion battery of 18650 size. Though it's rated at 3350mAh it's usually listed as 3400mAh on suppliers' sites as well as LG F1L. They are both 3350mAh cells with 4.87A maximum discharge rating so they must be compared.
I've tested both cells at 0.65A (0.2C), 2A and 5A.

The video version of this test for those who prefer watching rather than reading:
[Image: 212720_original.jpg]

As always the tests were done using ZKETECH EBC-A20, which supports up to 20A discharge, 4-wire measurement and is PC-connected.
[Image: 87638_original.jpg]

Using version 3.0 of my battery holder based on 0.5mm thick pure copper terminals
[Image: 210421_original.jpg]
[Image: 209931_original.jpg]

I've followed all the prescriptions of the IEC61960-2003 standard concerning battery's capacity measurement. Before each discharging cycle each battery was charged at standard current mentioned in its datasheet to charge end voltage (4.2V) (cut-off at 0.1A, which is the lowest supported by EBC-A20). Before each discharging or charging i've held a 1-1.5hrs pause. The environment temperature was 23.5-24.5°C. To be sure in results i've done each test minimum twice.

LG INR18650 F1L
My cell has the following marking: LGABF1L1865 Q088C298AA. According to BatteryBro Q248 means that the production date is March 2017.
[Image: 212991_original.jpg]

Specs from datasheet:
Nominal capacity: 3350mAh
Minimum capacity: 3250mAh
Nominal voltage: 3.63V
Standard charge current: 975mA (0.3C)
Max charge current: 1625mA (0.5C)
Charge end voltage: 4.2V
Charge cut-off current: 50mA
Max. discharge current: 4875mA (1.5C)
Discharge cut-off voltage: 2.5V
AC impedance at 1KHz: ≤70mΩ
Weight (max): 49g

The measured weight of my F1L cell is 45.31g
[Image: 213349_original.jpg]

Test results:
[Image: 213172_original.png]
At 0.2C (0.65A) it showed about 3300mAh - more than 3250mAh mentioned as minimum capacity, but less than 3350mAh and, of course, 3400mAh. 12Wh is not a bad result. At 5A it showed about 3100mAh and 10Wh.

Panasonic NCR18650B
The cell which i've tested has the following marking: H CV 7131. BatteryBro says 7131 means that the cell was manufactured in Jan 2017.
[Image: 213519_original.jpg]

Specs from datasheet:
Typical capacity: 3350mAh at 25°C
Minimum capacity: 3250mAh at 25°C
Nominal voltage: 3.6V
Standard charge current: 1625mA (0.5C)
Charge end voltage: 4.2V
Charge cut-off current: 65mA
Max. dischg current: 4875mA (1.5C)
Discharge cut-off voltage: 2.5V
AC impedance at 1KHz: ≤100mΩ
Weight: 48.5g

The measured weight of my NCR18650B cell is 45.79g
[Image: 214124_original.jpg]

Test results:
[Image: 214003_original.png]
At 0.2C (0.65A) NCR18650B's capacity is a bit higher than 3300mAh but still lower than 3350mAh. At 5A 3162mAh and 10.40Wh look not bad.

COMPARISON
Let's start with 0.65A (0.2C) discharge:
[Image: 211658_original.png]
Very close results. NCR18650B is a bit better, but the difference is not significant.

At 2A discharge:
[Image: 211880_original.png]
No difference at all! Just like twins!

At 5A discharge:
[Image: 212086_original.png]
NCR18650B at 5A leaves F1L behind with 55mAh / 0.44Wh difference. Not a huge advantage though.

CONCLUSION
Panasonic NCR18650B seems to be just a bit better than LG F1L but the difference becomes visible only at 5A. The price plays the first role here - Queen Battery sells NCR18650B for $3.9 and F1L for $2.6 so F1L is a smart choice i think.

Check out my YouTube channel for batteries, chargers and other stuff reviews.
I've recently launched my blog where you can find all my reviews in one place. Every new test/review will be first published on YouTube and in the blog. I'll be happy to see new subscribers, comments, suggestions and just your thoughts.
Michel, mike, hbpowerwall And 1 others like this post
XTAR DRAGON 4-slot charger/discharger review: https://youtu.be/S6yVMsIuauE
Miboxer C4-12 4 slot x 3.0A charger review: https://youtu.be/X-ww1YALjvU
Miboxer C2-4000 smart charger/discharger review: https://youtu.be/jrbJceNXv1g

Three High drain 20650 cells' capacity test (Sanyo, LG, QB): https://youtu.be/PExB1qAlxZo
Top 21700 cells LG M50 vs Samsung 48G: https://youtu.be/KGJDogOG4zw
Top 18650 cells 3500mAh batteries' battle: https://youtu.be/fJDuKyXfrQY
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#2
Well done! A+++
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#3
They stick pretty close all the way until the 5a test.

As usual excellent info!
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#4
Thanks guys! Recently got a temperature logger with external probe (TEMPer2) and calibrated it. Now i'm thinking on how to attach it to a cylindrical cell to have a firm and stable connection... So the upcoming high drain cells' tests gonna include temperature dataSmile
XTAR DRAGON 4-slot charger/discharger review: https://youtu.be/S6yVMsIuauE
Miboxer C4-12 4 slot x 3.0A charger review: https://youtu.be/X-ww1YALjvU
Miboxer C2-4000 smart charger/discharger review: https://youtu.be/jrbJceNXv1g

Three High drain 20650 cells' capacity test (Sanyo, LG, QB): https://youtu.be/PExB1qAlxZo
Top 21700 cells LG M50 vs Samsung 48G: https://youtu.be/KGJDogOG4zw
Top 18650 cells 3500mAh batteries' battle: https://youtu.be/fJDuKyXfrQY
Reply
#5
(10-16-2018, 02:14 AM)thunderheart Wrote: Thanks guys! Recently got a temperature logger with external probe (TEMPer2) and calibrated it. Now i'm thinking on how to attach it to a cylindrical cell to have a firm and stable connection... So the upcoming high drain cells' tests gonna include temperature dataSmile

I use a velcro strap with my RC charger. Only problem is it may insulate the cell a little and bias your results.
Reply
#6
Geek,
I ordered original 3M Scotch tape (French made) for that purpose. It holds strong enough but can be easily removed without leaving glue on the surface. High drain cells can get to 80°C easily and ordinary sticky tape would leave the glue on the cell for sure.
XTAR DRAGON 4-slot charger/discharger review: https://youtu.be/S6yVMsIuauE
Miboxer C4-12 4 slot x 3.0A charger review: https://youtu.be/X-ww1YALjvU
Miboxer C2-4000 smart charger/discharger review: https://youtu.be/jrbJceNXv1g

Three High drain 20650 cells' capacity test (Sanyo, LG, QB): https://youtu.be/PExB1qAlxZo
Top 21700 cells LG M50 vs Samsung 48G: https://youtu.be/KGJDogOG4zw
Top 18650 cells 3500mAh batteries' battle: https://youtu.be/fJDuKyXfrQY
Reply


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