Sanyo ML421 User Manual
D
H
Typical Characteristics
Charging Voltage vs. Capacity of ML421
2.5
2.0
Cell Type ML421
Specifications
Nom inal Capacity
Nominal Voltage
Standard Charge/Disc harge Current
Max. Discharge Current
Charge/Dis charge 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
Current value for obtaining 2.0V cell voltage when 15sec. pulse is applied
*3
at 50% discharge depth at 23
*1
Continuous
*3
Pulse
Disc harging Depth of 5% 3000
Disc harging Depth of 20% 300
Constant Voltage Charge
Hight Temperature
Diameter(D) 4.8mm
Height(H) 2.1mm
o
C.
o
C.
o
C.
Temperature Characteristics of ML421
3.5
3.0
*2
Charging voltage: 3.0V
Load: 300K ohm
2.3mAh
3V
0.005mA
0.2mA
0.6mA
3.1±0.15V
2.95±0.15V
-20℃～60
0.1g
℃
1.5
1.0
0.5
Discharge Capacity(mAh)
0
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
Charging Voltage(V)
Discharge Characteristics after Storage of ML421
3.5
3.0
2.5
2.0
Cell Voltage(V)
1.5
1.0
0
Duration(hour)
150
100
50
after 40days storage at 60
200
250
Discharge Condition
Load : 300kohm
o
Temp.: 23
C
o
C
300
2.5
o
60
2.0
Cell Voltage(V)
1.5
1.0
0 100 200 300 400
Duration(hour)
o
C
C
o
23-20
C
Charge/ Discharge Cycle Characteristics of ML421
3.0
2.5
2.0
1.5
Charge: 0.05mA 3.0V cut-off
1.0
0.5
Voltage at end of discharge (V)
400
350
0
0 100 200 300 400 500 600
Number of Cycles
Discharge: 0.05mA X 4h
o
C
Temp.: 23
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