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NICKEL METAL HYDRIDE HANDBOOK

AUGUST 2005

NICKEL METAL HYDRIDE BATTERIES: INDIVIDUAL DATA SHEET

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.

Typical Discharge Characteristics

Typical Charge Characteristics

HHR300CH

 

Cylindrical C size (HR 26/50) for backup use

Dimensions (with Tube)                                 (mm)

Specifications

1

After charging at 0.1It for 16 hours, discharging at 0.2It.

2

For reference only.

3

Need specially designed control system
Control System:
dT/dt cut-off; 1 to 2°C/min
-

U

V cut-off; -

U

V per cell = 5 to 10 mV

T-control; T=65°C
Rapid charger timer; 2.4h (at 1.25a)
Trickle timer; within 2h

4

With control system

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.

(

+

)

(   )

50.0

+

-

0

1.5

25.8

+

-

0

1.0

0

2

4

6

8

10

20

30

40

50

60

2.0

1.8

1.6

1.4

1.2

1.0

0.8

Voltage (V)

Charge Time (hours)

Charge: 300mA(0.1 It) x 16hrs.

10˚C
25˚C
60˚C

-20

-10

0

10

20

30

40

50

60

70

Capacity Ratio (%)

Temperature (

°

C)

120

110

100

90

80

70

60

50

40

30

Charge:  300mA (0.1 It) x 16 hrs.
Charge Temperature:  -10 to 60˚C
Discharge:  600mA (0.2 It)
Cut-off Voltage:  1.0V
Discharge Temperature:  25˚C

0

5

10

15

20

25

30

Voltage (V)

Discharge Time (minutes)

Charge: 300mA(0.1It) x 16 hrs.,  25

°

C

Discharge:  10A, 20A, 25

°

C

10A
20A

1.8

1.6

1.4

1.2

1.0

0.8

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

Nominal Voltage

1.2V

Discharge

Capacity

1

Average

2

Rated (Min.)

3300 mAh

3100 mAh

5m

300mA (0.1It) x 16hrs.

1500mA (1It) x 2.4 hrs.

4

155mA x 32 hrs.
100mA x 48 hrs.

Approx. Internal impedance

at 1000Hz at charged state.

Charge

Charge

Discharge

Storage

Standard

Rapid

3

Low Rate

Standard

Rapid

Low Rate

Ambient

T

emperature

˚

C

˚

F

   0˚C to 45˚C
 10˚C to 40˚C

-10˚C to 45˚C

-10˚C to 65˚C

-20˚C to 35˚C

-20˚C to 35˚C

-20˚C to 55˚C

32˚F to 113˚F

32˚F to 104˚F

14˚F to 149˚F

14˚F to 113˚F

-4˚F to 95˚F

-4˚F to 95˚F

-4˚F to 131˚F

< 1 year

< 3 months

< 1 month

Diameter

Height

Approximate

Weight

mm

Grams

Ounces

 25.8+0/-1.0

50.0+0/-1.5

inch

 1.02+0/-0.04

1.97+0/-0.06

80

2.82

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