P-130SCRC/FTF2 Panasonic - BSG, P-130SCRC/FTF2 Datasheet - Page 19

• Manufacturer Part Number: P-130SCRC/FTF2
• Description: BATTERY PK 2.4V 1300 MAH NICAD
• Manufacturer: Panasonic - BSG

Specifications of P-130SCRC/FTF2

• Battery Type: Nickel Cadmium (NiCd)
• Voltage - Rated: 2.4V
• Capacity: 1300mAh
• Battery Cell Size: SC - Flat Top
• Number Of Cells: 2
• Structure: 1 Row x 2 Cells Side to Side
• Termination Style: Solder Tab
• Rechargeability: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS compliant by exemption
• Other names: P098-F021

CHARGE METHODS FOR NI-CD BATTERIES - CONTINUED
(1) Mechanism
While the AC power is being supplied, the battery is
disconnected from the load and is charged by a very
small current which only replenishes the self-dis-
charge of the battery. Only in the event of an interrup-
tion in the AC power supply does power flow from the
battery to the load.
(3) General Specifications (Trickle Charge Current)
(4) Precautions
•
•
(1) Mechanism
The charge voltage at the completion of charge is
detected (the detection voltage can be freely set) by a
voltage detection circuit inside the charger, and the
charger switches from rapid charge to trickle charge.
To compensate for temperature-related fluctuations in
the charge voltage of Ni-Cd batteries, temperature
compensation is added to the detection voltage.
Voltage-controlled Charge System (for
Reference Only)
The trickle charge current for use as a standby
power supply should be set to a level at which
charge will be completed by time of the next
discharge, taking into consideration the frequency
of discharge and the discharge current.
If recovery charge at a relatively large current (for
example, 0.1 CmA) is required, combine trickle
charge with some other suitable charge control
system (for example, timer-control charge).
Trickle
Charge
Standby Power
Supply
Additional Charge
Following Rapid
Charge
NICKEL CADMIUM HANDBOOK, PAGE 18
(2) Features
•
•
Applications with Frequent
Discharge
Example: Back-up Power
Supply for Computers
Applications with Infrequent
Discharge
Example: Emergency Lights
Fig. 10 Charge Characteristics of the Voltage-controlled
Mainly used as a standby power supply for
emergency lights and other disaster-prevention
equipment.
The main purpose of trickle charge is to replenish
the self-discharge of the battery, using a very
small charge current of 0.02 to 0.05 CmA.
It takes many hours to completely charge.
Fig. 11 Circuit Block Diagram of the Voltage-controlled
V
I
ch
B
Charge System
Charge System
0
Current
Controller
I
ch
Total Timer
V
B
Voltage
Switch
T.P.: Thermal Protector
T.: Thermistor
FEBRUARY 2002
T
T.P.
0.033~
0.02~
0.05CmA
t
0.05CmA
0.033CmA