Cell Type ML1220
Specifications
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Typical Characteristics
Charge Characteristics of ML1220
Nominal Capacity*1 |
| 15mAh | |
Nominal Voltage |
| 3V | |
Standard Charge/Discharge Current | Continuous*2 | 0.1mA | |
Max. Discharge Current | 2mA | ||
Pulse*3 | 5mA | ||
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Charge/Discharge Cycle Characteristics | Discharging Depth of 5% | 3000 | |
Discharging Depth of 20% | 500 | ||
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Charging Method | Constant Voltage Charge | 3.1±0.15V | |
Hight Temperature | 2.95±0.15V | ||
Temperature Range | |||
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Weight |
| 0.8g | |
Dimensions | Diameter(D) | 12.5mm | |
Height(H) | 2.0mm | ||
| d | 9.6mm |
*1 Nominal capacity is determined to an end voltage of 2.0V when the battery is allowed to discharge at a standard current level at 23oC.
*2 Current value is determined so that 50% of the nominal capacity is obtained with an end voltage of 2.0V at 23 oC.
*3 Current value for obtaining 2.0V cell voltage when 15sec. pulse is applied at 50% discharge depth at 23 oC.
Charging Voltage vs. Capacity of ML1220
| 3.5 |
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| Cell Voltage |
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| 3.0 |
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| Charge Capacity |
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Voltage(V) | 2.5 |
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2.0 |
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Cell |
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| Charge circuit | 300ohm Temp.: 23oC |
1.5 |
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| 3.1V |
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| ML1220 | |
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| 1.0 |
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| discharged cell to 2.0V |
| 0 | 20 | 40 | 60 | |
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| Duration(hour) |
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20Capacity(mAh)
10 Charge
0
Discharge Capacity(mAh)
20
15
10
5
Charge Condition(discharged cell to 2.0V)
Load:200hom
Temp. : 23oC
Charge Duration : 1month
Discharge Condition
Load : 56kohm
Temp : 23oC
End Voltage : 2.0V
2.6 | 2.8 | 3.0 | 3.2 |
| Charging Voltage(V) |
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Temperature Characteristics of ML1220 |
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| 3.5 |
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| Charge voltage : 3.1V |
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| Load : 27kohm |
| 3.0 |
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Voltage(V) | 2.5 |
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| 60 o C |
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2.0 |
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Cell |
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| 23 o C |
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| 1.5 |
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| 1.0 | 0 | 50 | 100 | 150 | 200 | 250 |
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| Duration(hour) |
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300
Charge/ Discharge Cycle Characteristics of ML1220
| 10000 |
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| 5000 |
| Charge : 3.1V + 300ohm | |
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| Discharge : 0.5mA | |
Cycles |
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| Temp. : 23 | oC |
1000 |
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of | 500 |
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Number | 100 |
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| 50 |
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| 10 | 0 | 50 | 100 |
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| Discharge Depth(%) |
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Discharge Characteristics after Continuous Charge of ML1220
Cell Voltage(V)
3.5 |
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| Discharge Condition |
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| Load:56kohm |
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3.0 |
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| Temp.:23 oC |
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2.5 |
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2.0 |
| Initial(3.25V charged) |
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| after 200days continuous charged 3.25V at 60 oC |
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1.5 |
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1.0 | 0 | 5 | 10 | 15 | 20 |
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| Duration(day) |
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