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