Sanyo Battery Charger ML1220 User Guide

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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