Panasonic NCR18650BM is a low drain high capacity Li-ion cell in traditional 18650 format. It's rated at 3180mAh and supports discharging at up to 3.64A.
Tests were done using ZKETECH EBC-A20, which supports up to 20A discharge, 4-wire measurement and is PC-connected.
I've used version 3.0 of my battery holder based on 0.5mm thick pure copper terminals
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 (usually 3-4 times). Battery was bought from Queen Battery.
Panasonic NCR18650BM
My cell has the following marking: S NV 6722. It means that the production date is July 22, 2016.
Specifications from Panasonic NCR18650BM datasheet (pdf):
Rated capacity: 2980mAh at 20°C
Minimum capacity: 3030mAh at 25°C
Typical capacity: 3180mAh at 25°C
Nominal voltage: 3.6V
Standard charge current: 0.909A (0.3C)
Max charge current: 3.03A (1C)
Charge end voltage: 4.20V
Charge cut-off current: 60mA (0.02C) (100mA used)
Max continuous discharge current: 3.636A (1.2C)
Discharge cut-off voltage: 2.5V
AC impedance at 1KHz: ≤100mΩ
Max weight: 49.5g
The measured weight of my cell is 47.45g. Measured DCIR at 3030mAh was 26.5±1.5mΩ (in fully charged condition).
Panasonic NCR18650BM capacity test results:
At 0.2C or 0.61A NCR18650BM's capacity was noticeably higher than the 3180mAh declared. Even at it's maximum 3.64A it was 3000mAh. The curves look excellent and i think NCR18650BM is capable to hold much more than 3.64A. Maybe Panasonic limits the max discharge rate to provide good cycle life. Whatever, it's a good low drain high capacity cell.
Here is the video version of this review
Check out my YouTube channel for batteries, chargers and other stuff reviews.
![Panasonic NCR18650BM Li-ion 18650 cell battery discharge capacity test Panasonic NCR18650BM Li-ion 18650 cell battery discharge capacity test](https://ic.pics.livejournal.com/thunderheartrev/71546108/247663/247663_original.jpg)
Tests were done using ZKETECH EBC-A20, which supports up to 20A discharge, 4-wire measurement and is PC-connected.
![](https://ic.pics.livejournal.com/thunderheartrev/71546108/87638/87638_original.jpg)
I've used version 3.0 of my battery holder based on 0.5mm thick pure copper terminals
![](https://ic.pics.livejournal.com/thunderheartrev/71546108/210421/210421_original.jpg)
![](https://ic.pics.livejournal.com/thunderheartrev/71546108/209931/209931_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 (usually 3-4 times). Battery was bought from Queen Battery.
Panasonic NCR18650BM
My cell has the following marking: S NV 6722. It means that the production date is July 22, 2016.
![Panasonic NCR18650BM Li-ion 18650 cell battery discharge capacity test Panasonic NCR18650BM Li-ion 18650 cell battery discharge capacity test](https://ic.pics.livejournal.com/thunderheartrev/71546108/247170/247170_original.jpg)
Specifications from Panasonic NCR18650BM datasheet (pdf):
Rated capacity: 2980mAh at 20°C
Minimum capacity: 3030mAh at 25°C
Typical capacity: 3180mAh at 25°C
Nominal voltage: 3.6V
Standard charge current: 0.909A (0.3C)
Max charge current: 3.03A (1C)
Charge end voltage: 4.20V
Charge cut-off current: 60mA (0.02C) (100mA used)
Max continuous discharge current: 3.636A (1.2C)
Discharge cut-off voltage: 2.5V
AC impedance at 1KHz: ≤100mΩ
Max weight: 49.5g
The measured weight of my cell is 47.45g. Measured DCIR at 3030mAh was 26.5±1.5mΩ (in fully charged condition).
![Panasonic NCR18650BM Li-ion 18650 cell battery discharge capacity test Panasonic NCR18650BM Li-ion 18650 cell battery discharge capacity test](https://ic.pics.livejournal.com/thunderheartrev/71546108/248105/248105_original.jpg)
Panasonic NCR18650BM capacity test results:
![Panasonic NCR18650BM Li-ion 18650 cell battery discharge capacity test Panasonic NCR18650BM Li-ion 18650 cell battery discharge capacity test](https://ic.pics.livejournal.com/thunderheartrev/71546108/247339/247339_original.png)
Here is the video version of this review
Check out my YouTube channel for batteries, chargers and other stuff reviews.