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0 5 10 15 20
1.0
1.5
2.0
2.5
3.0
3.5
Initial(3.25V charged)
after 200days continuous charged 3.25V at 60
Discharge Condition
Load:56kohm
Temp.:23
2.6
2.8
3.0
3.2
5
10
15
20
Charge Condition(discharged cell to 2.0V)
Load:200hom
Temp. : 23
Charge Duration : 1month
Discharge Condition
Load : 56kohm
Temp : 23
End Voltage : 2.0V
0 20 40 60
1.0
1.5
2.0
2.5
3.0
3.5
0
10
20
Cell Voltage
Charge Capacity
0 50 100
10
50
100
500
1000
5000
10000
Charge : 3.1V + 300ohm
Discharge : 0.5mA
Temp. : 23
Cell Type ML1220
Specifications
15mAh
3V
0.1mA
Continuous
*2
2mA
Pulse
*3
5mA
Discharging Depth of 5% 3000
Discharging Depth of 20% 500
Constant Voltage Charge
3.1±0.15V
Hight Temperature
2.95±0.15V
-20
℃～
60
℃
0.8g
Diameter(D) 12.5mm
Height(H) 2.0mm
d9.6mm
Dimensions
Charging Method
Nominal Capacity
*1
Nominal Voltage
Standard Charge/Discharge Current
Weight
Charge/Discharge Cycle Characteristics
Max. Discharge Current
Temperature Range
Typical Characteristics
Temperature Characteristics of ML1220
Discharge Capacity(mAh)
Charging Voltage(V)
Cell Voltage(V)
Duration(hour)
Charging Voltage vs. Capacity of ML1220
Charge Characteristics of ML1220
Cell Voltage(V)
Duration(hour)
Number of Cycles
Discharge Depth(%)
Charge/ Discharge Cycle Characteristics of ML1220
Cell Voltage(V)
Duration(day)
Discharge Characteristics after Continuous Charge of ML1220
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)
3.1V
ML1220
300ohm
Charge circuit
o
C
o
C
o
C
o
C
o
C
discharged cell to 2.0V
Temp.: 23
o
C
0 50 100 150 200 250 300
1.0
1.5
2.0
2.5
3.0
3.5
-20
o
C
23
o
C
60
o
C
Charge voltage : 3.1V
Load : 27kohm
D
H
d