Panasonic HHR370AH User Manual

NICKEL METAL HYDRIDE BATTERIES: INDIVIDUAL DATA SHEET

.5

0

0

6

HHR370AH Cylindrical L-Fat A size (HR 18/67)

Dimensions (with T ube) (mm)

+-0

18.2

0.7

(+)

+-0

67.0

1

( )

Specifications

mm inch

2

18.2+0/-0.7

67.0+0/-1.5

Grams

60 2.12

3700 mAh
3500 mAh

Diameter

Height

Approximate

Weight

Nominal V oltage 1.2V

Discharge

Capacity

1

Average

Rated (Min.)
Approx. Internal impedance
at 1000Hz at charged state.

Standard

3

Charge

Rapid

Low Rate

Charge

Standard

Rapid

Discharge

< 1 year

Ambient

Storage

Temperature

< 6 months
< 1 month
< 1 week

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

-UV cut-off; -UV 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

370mA x 16hrs.

1750mA x 2.4 hrs.

185mA x 32 hrs.
123mA x 48 hrs.

C

˚

-10˚C to 60˚C

-10˚C to 45˚C

-10˚C to 60˚C

-20˚C to 35˚C

-20˚C to 45˚C

-20˚C to 55˚C

-20˚C to 65˚C

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.

20mΩ

14˚F to 140˚F
14˚F to 113˚F
14˚F to 140˚F

-4˚F to 95˚F

-4˚F to 113˚F

-4˚F to 131˚F

-4˚F to 149˚F

0.72+0/-0.03

2.64+0/-0.06

Ounces

4

F

˚

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
0246810121416182

Charge: 330mA(0.1 It)✕16hrs.

Charge Time (hours)

-10˚C
25˚C
60˚C

Typical Discharge Characteristics

120
110
100

90
80
70
60

Capacity Ratio (%)

Charge: 330mA(0.1 It)✕15hrs

50

Disharge: 660mA(0.2 It),cut off voltage 1.0V

40

Disharge Temperature: 20˚C

30

-20-100 1020304050607

Temperature (˚C)

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
012345

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

Charge Time (hours)

Charge:
Disharge:

0˚C
25˚C
60˚C

330m

A(0.1 It)✕16hrs,25˚C

660m

A(0.2 It)

NICKEL METAL HYDRIDE HANDBOOK

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.

AUGUST 2005