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Large capacity for hour-after-hour back-up
The ML621 has a nominal capacity of 3 mAh, and These super-compact lithium secondary batteries feature when the load is 5µA, it provides back-up for 600 a new configuration in which a manganese compound oxide is used for the positive electrode, a lith- • Excellent withstand voltage characteristics
ium/aluminum alloy for the negative electrode and a These batteries can withstand the application of a special nonaqueous solvent for the electrolyte. They can continuous 3.2V voltage at a high temperature of be charged at voltage levels of 3V or so, they have a large capacity and excellent overcharge and over- • Outstanding overcharge and overdischarge with-
discharge withstanding characteristics. Their space- standing characteristics.
saving design enables them to be incorporated quite Even when these batteries have been left standing for a long time with no charge at all, their perfor- mance can be restored by recharging them.
Charging at voltage levels even under 3V
In order to support the current trend in ICs toward Power source for backing up memory data in mobile lower voltages, these batteries can be charged at a 3± telephones, personal handyphone systems, memory 0.2 voltage level, and this makes it easier to set the cards, pagers and other small-sized communications charging circuits for the circuits which employ 3V devices as well as in data terminals and office Electrical characteristics 20°C
Dimensions (Max.)
Nominal *1
Model No.
voltage (V)
* 1 Nominal capacity shown above is based on standard drain and cut off voltage down to 2.0 V at 20°C About 1,000 times at 10% discharge depth to nominal capacity Constant-voltage charging (refer to recommended charging circuit) Lithium Batteries Handbook, Page 57
Discharge characteristics
Discharge load characteristics (ML621S)
Discharge temperature characteristics (ML621S)
Discharge: 200k (=12µA), cut-off at 3.1V Charge/discharge characteristics vs. discharge depth

Discharge depth (%) as a function of nominal capacity Lithium Batteries Handbook, Page 58
Storage characteristics (ML621S)
Withstand voltage characteristics (Overcharge
characteristics) (ML621S)

Overdischarge withstanding characteristics
Relationship between charging voltage and charge
Relationship between current consumption and
Constant-voltage charging characteristics (ML621S)
charge retention time
Lithium Batteries Handbook, Page 59
The choice of the charging circuit is extremely critical if Basic conditions: Constant-voltage charging full rein is to be given to the battery characteristics.
Charging voltage: 2.8 to 3.2V (Standard voltage: 3.1V) Make every effort to ensure that the proper charging Current: (0.3mA for ML616. ML621 with 2.5V battery circuit is used; otherwise, trouble may result.
(Use caution in setting the charge voltage.) When charging using another battery
Standard circuit
• Select a diode with a low reverse current for D2.
Simple circuit which can be configured at low cost
* VF of D will be different from the value given above if a current in excess of 100µA flows to the loadduring operation. Compensation must be provided by the resistors in such cases.
UL recognition for the ML621 and ML616 was received When a protective component is shorted or opened, maximum charge current is regulated to the followingvalues: In filling application for UL recognition, a maximum value of 300mA was given as the condition restricting the current when a short-circuit or open-circuit situation Call Panasonic for answers to specific questions aboutUL.
Lithium Batteries Handbook, Page 60


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INSTRUCTIVO PARA LA VINCULACIÓN CON TERCEROS 1.- OBJETO El presente instructivo brinda información clara y sencil a para la vinculación de la UNLP conterceros, con la finalidad de cumplimentar los requisitos legales que regulan la materia a losefectos de salvaguardar las responsabilidades que, en materia civil, económica y/o penal, sepueden derivar de los compromisos asumidos. Asimismo,

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