Rechargeable 3.7V 10ah Lithium Ion Li-Polymer Lipo Battery Pack
|
No. |
Test item |
Test conditions |
Requirements |
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| 3.1 |
Outside Appearance |
Visual check |
,
No prominent stain and deformation, nor damage. |
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| 3.2 |
Outside Dimensions |
Vernier clippers |
Diameter
18.30 0.20mm Height 64.90 0.25mm |
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| 3.3 |
Open circuit voltage at delivery |
i
.
Voltage within 1 week after delivery |
3.
6V
3.6V or more |
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| 3.4 | Internal resistance at delivery |
1
(
1kHz)
.
The cell impedance shall be measured by AC method (1kHz) within 1 week after delivery. |
40
mQ
40mf2 or less |
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| 3.5 |
Nominal capacity |
,
0.2C
At standard charging (CH) and 0.2C DCH to the end of DCH voltage |
30
00mAh
3000mAh or more |
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| 3.6 |
Temperature-rate performance |
1
)
Standard CH at R.T
- 10 Q C , 4 Keep batteries in a icebox with ambient temperature of -10°C for 4 hours. - 10°C 0 .2C , |
270%
Capacity ratio >70% |
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| . | , L | |||||||||
|
DCH at 0.2C to the end of DCH voltage at -10°C, Calculate the capacity ratio with the nominal capacity.
2 ) |
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| Standard CH at R.T | ||||||||||
|
0
°C
,
4
Keep batteries in a icebox with ambient temperature of 0°C for 4 hours. ( TC 0.2C , . DCH at 0.2C to the end of DCH voltage at 0°C; Calculate the capacity ratio with the nominal capacity. |
280% Capacity ratic^80% | |||||||||
|
3
)
Standard CH at RT
6 0°C , 4 Keep batteries in a oven with ambient temperature of 60°C for 4 hours. 6 0°C 0 .2C , DCH at 0.2C to the end of DCH voltage at 60°C; Calculate the capacity ratio with the nominal capacity. |
>95%
Capacity ratio >95% |
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| 3.7 |
Cycle Life |
,
1
0
0.2C , 2 0 _ . 300 cycles of Standard CH (rest lOmin) and 0.2C DCH (rest 20min) |
30
0
/
>80% The ratio of the 300 th discharge capacity and the first cycle >80% |
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