NICKEL METAL HYDRIDE BATTERIES: INDIVIDUAL DATA SHEET
Typical Charge Characteristics
HHR450A
Cylindrical L-fat A size (HR 18/67)
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
Dimensions (with Tube)
(mm)
Charge: 1500mA- V=10mV
18.2+-0
0.7
(+)
0˚C
20˚C
45˚C
0
20 40 60 80 100 120 140 160 180 200 220
Charge Time (minutes)
67.0+-0
1.5
Typical Discharge Characteristics
1.8
Charge: 2000mA dT/dt=1.0˚C/min,20˚C
Disharge Temperature: 20˚C
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
(
)
Specifications
mm
18.2+0/-0.7
67.0+0/-1.5
Grams
inch
900mA(0.2 It)
0.72+0/-0.03
2.64+0/-0.06
Ounces
Diameter
Height
0
1
2
3
4
5
6
Discharge Time (hours)
Approximate
Weight
60
2.12
Nominal Voltage
1.2V
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
Average**
4500 mAh
4200 mAh
Discharge
Capacity*
Charge: 2000mA dT/dt=1.0˚C/min,20˚C
Disharge Temperature: 20˚C
Rated (Min.)
Approx. Internal impedance
at 1000Hz at charged state.
25mΩ
Standard
420mA (0.1It) x 16hrs.
2000mA dT/dt
Charge
Rapid***
F
˚
C
˚
Standard
Charge
0˚C to 45˚C
0˚C to 40˚C
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
Rapid
Discharge
< 1 year
2000mA(0.44 It)
4500mA(1 It)
-10˚C to 65˚C
-20˚C to 35˚C
-20˚C to 45˚C
-20˚C to 55˚C
0
20
40
60
80
100
120
140
Discharge Time (minutes)
Storage
< 3 months
< 1 month
* 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
AUGUST 2005
NICKEL METAL HYDRIDE HANDBOOK
modification without notice. Contact Panasonic for the latest information.
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
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