Panasonic NCR18650BD 3200mAh 10A cell's capacity test

Panasonic NCR18650BD is a mid-drain high capacity Li-ion cell in traditional 18650 format. It's rated at 3180mAh and supports discharging at up to 10A.

Panasonic NCR18650BD Li-ion 18650 cell battery discharge capacity test

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 NCR18650BD
My cell has the following marking: C CV 7321.

Specifications from Panasonic NCR18650BD 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: 1.5A
Charge end voltage: 4.20V
Charge cut-off current: 60.6mA (0.02C) (100mA used)
Max continuous discharge current: 10A
Discharge cut-off voltage: 2.5V
AC impedance at 1KHz: ≤35mΩ
Max weight: 49.5g

The measured weight of my cell is 46.66g. Measured DCIR at 3030mAh was 23.8±1.0mΩ (in fully charged condition).

Panasonic NCR18650BD capacity test results:

At 0.2C or 0.61A NCR18650BD's capacity was a bit higher than declared and it didn't go below 3020mAh all the way up to 10A. The curves look excellent even at 10A. Just a great cell, nothing to add.

Here is the video version of this review

Check out my YouTube channel for batteries, chargers and other stuff reviews.

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