Panasonic HHR450A User Manual
NICKEL METAL HYDRIDE BATTERIES: INDIVIDUAL DATA SHEET
0
6
0
.7
HHR450A Cylindrical L-fat A size (HR 18/67)
Dimensions (with T ube) (mm)
+-0
18.2
0
(+)
+-0
67.0
1.5
( )
Specifications
mm inch
Diameter
Height
Approximate
Weight
18.2+0/-0.7
67.0+0/-1.5
Grams
60 2.12
0.72+0/-0.03
2.64+0/-0.06
Ounces
Typical Charge Characteristics
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
Voltage (V)
1.2
1.1
1.0
0.9
0.8
0 20 40 60 80 100 120 140 160 180 200 22
Charge Time (minutes)
Charge: 1500mA- V=10mV
Typical Discharge Characteristics
1.8
1.7
1.6
1.5
1.4
1.3
1.2
Voltage (V)
1.1
1.0
0.9
0.8
012345
Charge:
2000mA dT/dt=1.0˚C/min,20
Disharge Temperature:
Discharge Time (hours)
20
900mA(0.2 It)
0˚C
20˚C
45˚C
˚C
˚C
Nominal V oltage 1.2V
Discharge
Capacity*
Average**
Rated (Min.)
Approx. Internal impedance
at 1000Hz at charged state.
Charge
Standard
Rapid***
Charge
Standard
Rapid
Discharge
Ambient
Storage
Temperature
< 1 year
< 3 months
< 1 month
0˚C to 45˚C
0˚C to 40˚C
-10˚C to 65˚C
-20˚C to 35˚C
-20˚C to 45˚C
-20˚C to 55˚C
4500 mAh
4200 mAh
25mΩ
420mA (0.1It) x 16hrs.
2000mA dT/dt
C
˚
F
˚
32˚F to 113˚F
32˚F to 104˚F
14˚F to 149˚F
-4˚F to 95˚F
-4˚F to 113˚F
-4˚F to 131˚F
* After charging at 0.1It for 16 hours, discharging at 0.2It.
** For reference only.
*** For rapid charge: use dT/dt charge termination method. Refer to the
Nickel Metal Hydride “Charge Methods” section for further details.
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
1.8
1.7
1.6
1.5
1.4
1.3
1.2
Voltage (V)
1.1
1.0
0.9
0.8
0 20 40 60 80 100 120 14
Charge:
2000mA dT/dt=1.0˚C/min,20
Disharge Temperature:
Discharge Time (minutes)
20
˚C
2000mA(0.44 It)
4500mA(1 It)
˚C
This information is generally descriptive only and is not intended to make or imply any representation, guarantee or warranty with respect to any cells and batteries. Cell and battery designs/specifications are subject to
modification without notice. Contact Panasonic for the latest information.
NICKEL METAL HYDRIDE HANDBOOK
AUGUST 2005
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