1. Preface:
The purpose of this product specification is to provide technical information for the rechargeable Lithium-ion button battery LIR2450, manufactured and supplied by Shenzhen Lidea Battery Co., Ltd.
2. Description and Model
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2.1 Description |
Rechargeable Lithium-ion button battery |
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2.2 Model |
LIR2450 |
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3. Specification |
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3.1 Capacity |
120&plu***n;10mAh |
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3.2 Charging Voltage |
4.20V |
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3.3 Nominal Voltage |
2.75V at 0.2C mA |
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3.4 Standard Charging Method |
C***tant current: 24mA c***tant voltage 4.20V |
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3.5 Cut-off Discharge Voltage |
2.75V |
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3.6 Max.Discharge Current |
120mA |
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3.7 arge Current |
120mA |
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3.8 Cycle Life |
>500 cycles at 0.2C mA discharge |
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3.9 Ambient Temperature |
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for Standard Charge |
0℃~45℃ |
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for Discharge |
-20℃~60℃ |
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3.10 Storage |
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for within the temperature |
-20℃~60℃ |
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for within the humidity |
≤75% |
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3.11 Energy Density |
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Wh/L |
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Wh/Kg |
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3.12 Weight of Bare Cell |
~5.6g |
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3.13 Charge State Internal Impedance |
≤400mΩ |
4. Appearance
Appearance shall be free from any remarkable scratch,flaws, rust, discoloration or electrolyte leakage (visible or by ***ell).
5. Standard Test condition
5.1 Environment Conditi***: Unless otherwise specified,all test stated in this Product Specification are conducted within the temperature 15~25℃ and the humidity 45~85%RH.
5.2 Test Equipment:
Impedance meter: The impedance meter with AC 1kHz should be used.
6. Test Procedure and Its Standard
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Item |
Measuring Procedure |
Standard |
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6.1 Appearance |
Visual |
No Defect and Leak |
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6.2 Dimension |
Caliper |
As item 8 |
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6.3 Weight |
Scale |
As item 3.12 |
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6.4 Maximum Charge Current |
CCCV(C***tant Current C***tant Voltage) |
120mA |
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6.5 Full charge |
CC/CV |
Charge it with 0.2CmA c***tant current till 4.2V(Max), then charge it with c***tant voltage 4.2V until the charging current drops to 0.01C. |
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6.6 Open Circuit Voltage |
Within 1hr after full charge,measure Open circuit voltage |
>4.15V |
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6.7 Internal Impedance |
Measure the battery with 1kHz AC |
≤400mΩ |
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6.8 Discharge Capacity |
Within 1hr after full charge,discharge until final discharge,at 0.2C mA and measure the capacity |
>120mAh |
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6.9 Maximum Discharge Current |
Until final discharge voltage |
120mA |
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6.10 Charge/Discharge Cycle Life |
Discharge:0.2CmA to 3.00V, This charge/discharge shall be repeated 500 times Charge:CCCV,CC- 0.2CmA,CV- 4.2V until the CC is below 0.8mA. |
Discharge capacity should be >70% of item 6.8 |
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6.11 Leakage Proof |
After full charging,the battery shall be stored at 40&plu***n;2℃ and humidity 80&plu***n;5% for 21 days. |
No leakage should be observed by visual inspection |
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6.12 Temperature Characteristics |
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Discharge capacity should be>60% of item 6.8 and no abnormality on its appearance and structure |
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6.13 Charge Retention |
After full charging, stand at 20&plu***n;5℃discharge capacity for 28 days, measure the discharge should be>85% of item capacity according to item 6.8. |
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