Cell Type ML1220
Specifications
Nominal Capacity*1
15mAh
3V
Nominal Voltage
Standard Charge/Discharge Current
0.1mA
Continuous*2
2mA
Max. Discharge Current
Pulse*3
5mA
3000
500
Discharging Depth of 5%
Discharging Depth of 20%
Constant Voltage Charge
Hight Temperature
Charge/Discharge Cycle Characteristics
Charging Method
3.1±0.15V
2.95±0.15V
D
d
Temperature Range
Weight
-20
℃～
60
℃
0.8g
Diameter(D)
Height(H)
d
12.5mm
2.0mm
9.6mm
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
Charge Characteristics of ML1220
Charging Voltage vs. Capacity of ML1220
3.5
3.0
2.5
2.0
1.5
1.0
20
Charge Condition(discharged cell to 2.0V)
Load:200hom
o
Temp. : 23
Cell Voltage
C
Charge Duration : 1month
Discharge Condition
Load : 56kohm
20
10
0
Charge Capacity
oC
Temp : 23
End Voltage : 2.0V
15
10
5
300ohm Temp.: 23o
C
Charge circuit
3.1V
ML1220
discharged cell to 2.0V
2.6
2.8
3.0
3.2
0
20
40
60
Duration(hour)
Charging Voltage(V)
Temperature Characteristics of ML1220
Charge/ Discharge Cycle Characteristics of ML1220
10000
3.5
3.0
2.5
Charge : 3.1V + 300ohm
5000
Charge voltage : 3.1V
Load : 27kohm
Discharge : 0.5mA
Temp. : 23 oC
1000
500
60 o
C
2.0
-20 oC
23 o
C
100
50
1.5
1.0
10
0
50
100
0
50
200
250
300
D1u0r0ation(ho1u5r0)
Discharge Depth(%)
Discharge Characteristics after Continuous Charge of ML1220
3.5
Discharge Condition
Load:56kohm
oC
Temp.:23
3.0
2.5
2.0
1.5
1.0
Initial(3.25V charged)
after 200days continuous charged 3.25V at 60 oC
0
5
10
15
20
Duration(day)
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