NICKEL CADMIUM BATTERIES: INDIVIDUAL DATA SHEET
P-280CR
C size (KR26/50) Type: R
Dimensions (with tube)
(mm)
Typical Charge Characteristics
1.8
1.7
1.6
Charge: 2800mA (1It)x 1.5hrs.
Voltage (V)
1.5
1.4
1.3
1.2
1.1
10˚C
20˚C
40˚C
25.8
+ 0
-
1.0
(
+
)
1.0
0.9
0
20
40
60
80
100
120
Charge Time (minutes)
50.0
+ 0
-
1.5
Typical Discharge Characteristics
1.7
1.6
1.5
Charge: 2800mA(1It)x 1.5hrs., 20˚C.
Discharge Temperature : 20˚C.
Voltage (V)
( )
1.4
1.3
1.2
1.1
1.0
1400mA
(0.5It)
0
1
2
3
4
5
560mA
(0.2It)
6
7
8
9
Specifications
Diameter
Height
Approximate
Weight
mm
25.8 +0/-1.0
50.0 +0/-1.5
Grams
79g
inch
1.02 +0/-0.04
1.97 +0/-0.06
Ounces
2.79
0.9
0.8
Discharge Time (hours)
Nominal Voltage
Rated (Min.)
Approx. Internal impedance at
1000Hz at charged state
Standard
Charge
Rapid***
Ambient
Temperature
1.2V
3000mAh
2800mAh
Voltage (V)
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0
10
20
30
40
50
60
70
80
90
5600mA
(2It)
2800mA
(1It)
Charge: 2800mA(1It)x 1.5hrs., 20˚C.
Discharge Temperature: 20˚C.
Discharge
Capacity*
Average**
4mΩ
280mA (0.1It) x 16 hrs.
200mA (0.33It) x 4.5 hrs.
˚C
˚F
0˚C to 45˚C 32˚F to 113˚F
10˚C to 40˚C 50˚F to 104˚F
-20˚C to 65˚C -4˚F to 149˚F
-20˚C to 35˚C -4˚F to 95˚F
-20˚C to 45˚C -4˚F to 113˚F
Charge
Standard
Rapid
Discharge
< 2 years
Storage
< 6 months
Discharge Time (minutes)
Voltage (V)
* 0.2It discharge capacity after charging at 0.1It for 16 hours.
** For reference only.
*** Refer to “Charge Methods for Ni-Cd Batteries”
Battery performance and cycle life are strongly affected by how they
are used. In order to maximize battery safety, please consult Panasonic
when determining charge / discharge specs, warning label contents and
unit design.
Note:
[It] was previously expressed as [C]. [It] is an IEC standard expression
for the amount of charge or discharge current and is expressed as:
It(A) = Cn (Ah)/1h.
• [It] is the reference test current in ampres
• [Cn] is the rated capacity of the cell or battery in Ampere-hours.
n = the time base [hours] for which the rated capacity is declared
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0
5
10
1400mA
(5It)
15
20
8400mA
(3It)
25
30
Charge: 2800mA(1It)x 1.5hrs., 20˚C.
Discharge Temperature : 20˚C.
Discharge Time (minutes)
NICKEL CADMIUM HANDBOOK, PAGE 57
AUGUST 2003
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