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0 50 100 150 200 250 300 350 400
1.0
1.5
2.0
2.5
3.0
3.5
Load:150kohm
Temp.:23
Initial(3.0V charged)
after 20days storage at 60
0 10 20 30 40 50
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
1.0
2.0
3.0
4.0
5.0
6.0
Charge Capacity
Cell Voltage
Cell Type ML621
Specifications
5.5mAh
3V
0.015mA
Continuous
*2
0.5mA
Pulse
*3
1.5mA
Discharging Depth of 5% 3000
Discharging Depth of 20% 300
Constant Voltage Charge
3.1±0.15V
Hight Temperature
2.95±0.15V
-20
℃～
60
℃
0.22g
Diameter(D) 6.8mm
Height(H) 2.1mm
Dimensions
Charging Method
Nominal Capacity
*1
Nominal Voltage
Standard Charge/Discharge Current
Weight
Charge/Discharge Cycle Characteristics
Max. Discharge Current
Temperature Range
Typical Characteristics
Cell Voltage(V)
Duration(hour)
Charge Characteristics of ML621
Cell Voltage(V)
Duration(hour)
Discharge Characteristics After Storage of ML621
Nominal capacity is determined to an end voltage of 2.0V when the battery is allowed to
discharge at a standard current level at 23
o
C.
*1
Current value is determined so that 50% of the nominal capacity is obtained with an end
voltage of 2.0V at 23
o
C.
*2
Current value for obtaining 2.0V cell voltage when 15sec. pulse is applied at 50%
discharge depth at 23
o
C.
*3
Charge Capacity(mAh)
D
H
3.0V
ML621
1kohm
Charge circuit Temp.:23
o
C
discharged cell to 2.0V
o
C
o
C
0 50 100 150 200 250 300 350 400
1.0
1.5
2.0
2.5
3.0
3.5
Discharge Condition
Load: 150kohm
Temp.: 23
Initial (3.0V charged)
after 60days continuous charged 3.0V at 60
Discharge Characteristics after Continuous Charge of ML621
Cell Voltage(V)
Duration(hour)
o
C
o
C
0 50 100 150 200 250 300 350 400
1.0
1.5
2.0
2.5
3.0
3.5
Charging Voltage : 3.0V
Load : 150kohm
60
23
-20
Temperature Characteristics of ML621
Cell Voltage(V)
Duration(hour)
o
C
o
C
o
C