Cell Type ML421
Specifications
Nominal Capacity*1
2.3mAh
3V
Nominal Voltage
Standard Charge/Discharge Current
0.005mA
Continuous*2
0.2mA
Max. Discharge Current
Pulse*3
0.6mA
3000
300
3.1±0.15V
2.95±0.15V
Discharging Depth of 5%
Discharging Depth of 20%
Constant Voltage Charge
Hight Temperature
Charge/Discharge Cycle Characteristics
Charging Method
Temperature Range
Weight
-20
℃～
60
℃
D
0.1g
Diameter(D)
Height(H)
4.8mm
2.1mm
Dimensions
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.
*1
Current value is determined so that 50% of the nominal capacity is obtained with an end
voltage of 2.0V at 23 oC.
*2
*3
Current value for obtaining 2.0V cell voltage when 15sec. pulse is applied
at 50% discharge depth at 23 oC.
Typical Characteristics
Charging Voltage vs. Capacity of ML421
Temperature Characteristics of ML421
2.5
3.5
Charging voltage: 3.0V
Load: 300K ohm
2.0
1.5
1.0
3.0
2.5
oC
60
2.0
Charging Conditon(discharged cell to 2.0V)
Load:3kohm
oC
oC
23
-20
oC
Temp.: 23
Charging Duration : 50hours
Discharging condition
Load : 300kohm
Temp.: 23oC
0.5
0
1.5
1.0
End Voltage : 2.0V
2.6
2.8
3.0
3.2
0
100
200
300
400
Charging Voltage(V)
Duration(hour)
Discharge Characteristics after Storage of ML421
Charge/ Discharge Cycle Characteristics of ML421
3.5
3.0
Discharge Condition
Load : 300kohm
oC
Temp.: 23
2.5
2.0
3.0
2.5
2.0
1.5
1.0
1.5
Charge: 0.05mA 3.0V cut-off
Discharge: 0.05mA X 4h
1.0
oC
Temp.: 23
oC
after 40days storage at 60
0.5
0
0
50
100
150
200
250
300
350
400
0
100
200
300
400
500
600
Duration(hour)
Number of Cycles
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