Panasonic HHR450A User manual

NICKEL METAL HYDRIDE HANDBOOK AUGUST 2005

NICKEL METAL HYDRIDE BATTERIES: INDIVIDUAL DATA SHEET

Thisinformationisgenerallydescriptiveonlyandisnotintendedtomakeorimplyanyrepresentation,guaranteeorwarrantywithrespecttoanycellsandbatteries.Cellandbatterydesigns/specificationsaresubjectto

modificationwithoutnotice.ContactPanasonicforthelatestinformation.

Typical Discharge Characteristics

Typical Charge Characteristics

HHR450ACylindrical L-fat A size (HR 18/67)

Dimensions (with Tube) (mm)

Specifications

* 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.

0 20 40 60 80 100 120 140 160 180 200 22

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2.0

Voltage (V)

0˚C

20˚C

45˚C

Charge Time (minutes)

Charge: 1500mA- V=10mV

012345

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

900mA(0.2 It)

Charge:

2000mA dT/dt=1.0

˚C

/min,20

˚C

Disharge Temperature:

˚C

Voltage (V)

Discharge Time (hours)

0 20 40 60 80 100 120 14

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

4500mA(1 It)

2000mA(0.44 It)

Charge:

2000mA dT/dt=1.0

˚C

/min,20

˚C

Disharge Temperature:

˚C

Voltage (V)

Discharge Time (minutes)

(

)

( )

67.0+

-0

1.5

18.2+

-0

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

NominalVoltage 1.2V

Discharge

Capacity* Average**

Rated (Min.)

4500 mAh

4200 mAh

25mΩ

420mA (0.1It) x 16hrs.

2000mA dT/dt

Approx. Internal impedance

at 1000Hz at charged state.

Charge

Discharge

Storage

Standard

Rapid***

Standard

Rapid

Ambient

Temperature

˚C˚F

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

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

< 1 year

< 3 months

< 1 month

Diameter

Height

Approximate

Weight

mm inch

Grams Ounces

18.2+0/-0.7

67.0+0/-1.5 0.72+0/-0.03

2.64+0/-0.06

60 2.12

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