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SANYO UR14500P AA-size Li-ion battery's capacity test

14500 is the same AA size we used to see in alkaline and Ni-MH batteries. It assumes 50mm in length and 14mm in diameter. Previously i've tested SONY US14500VR2 and TrustFire 900mAh and Sanyo UR14500P is the third cell in this format i tested. It's a 840mAh rated low-drain cell without protection PCB.
SANYO UR14500P 14500 AA-size Li-ion battery's 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.

SANYO UR14500P
My cell has the following marking: SANYO L UR14500P V08B. As Sanyo usually does, the marking is hardly readable and you should find the right angle under which you'll be able to read the marking.
SANYO UR14500P 14500 AA-size Li-ion battery's capacity test

Specifications from SANYO UR14500P datasheet (pdf):
Rated capacity: 800mAh at 20°C
Minimum capacity: 800mAh at 25°C
Typical capacity: 840mAh at 25°C
Nominal voltage: 3.7V
Standard charge current: 0.56A (0.7C)
Max charge current: 800mA (1C)
Charge end voltage: 4.20V
Charge cut-off current: 16mA (0.02C) (100mA used)
Max continuous discharge current: 1.6A (2C)
Discharge cut-off voltage: 2.5V
Max weight: 21.0g

The measured weight of my cell is 19.31g. Measured DCIR at 800mAh was 57.5±5mΩ (in fully charged condition).
SANYO UR14500P 14500 AA-size Li-ion battery's capacity test

SANYO UR14500P capacity test results:
SANYO UR14500P 14500 AA-size Li-ion battery's capacity test
At 0.2C or 0.16A UR14500P's capacity is noticeably higher than declared in the datasheet - 868mAh. A its max discharge rate this little red cell gave out almost 750mAh. Curves look excellent.

For low drain applications UR14500P could be a good choice, especially where small sized cells are needed.

Here is the video version of this review
SANYO UR14500P 14500 AA-size Li-ion battery's capacity test

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

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