NICKEL METAL HYDRIDE BATTERIES: INDIVIDUAL DATA SHEET
HHR370AH Cylindrical L-Fat A size (HR 18/67)
Typical Charge Characteristics
Dimensions (with Tube)
(mm)
2.0
1.9
Charge: 330mA(0.1 It) ? 16hrs.
1.8
1.7
1.6
1.5
1.4
1.3
1.2
18.2 + - 00.7
( + )
1.1
1.0
0.9
-10?C
25?C
60?C
0.8
0
2
4
6
8
10
12
14
16
18
20
Charge Time (hours)
Typical Discharge Characteristics
67.0 + - 01.5
120
110
100
90
80
70
60
( )
50
Charge: 330mA(0.1 It) ? 15hrs
Specifications
mm
inch
40
30
- 20
Disharge: 660mA(0.2 It),cut off voltage 1.0V
Disharge Temperature: 20?C
- 10 0 10 20 30 40
50
60
70
Diameter
Height
Approximate
Weight
18.2+0/-0.7
67.0+0/-1.5
Grams
60
0.72+0/-0.03
2.64+0/-0.06
Ounces
2.12
Temperature (?C)
Rapid 3
NominalVoltage
Discharge Average 2
Capacity 1 Rated (Min.)
Approx. Internal impedance
at 1000Hz at charged state.
Standard
Charge
Low Rate
1.2V
3700 mAh
3500 mAh
20m ?
370mA x 16hrs.
1750mA x 2.4 hrs. 4
185mA x 32 hrs.
123mA x 48 hrs.
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
Charge: 330mA(0.1 It) ? 16hrs,25?C
Disharge: 660mA(0.2 It)
Standard
Charge
Rapid
Discharge
< 1 year
? C
-10?C to 60?C
-10?C to 45?C
-10?C to 60?C
-20?C to 35?C
? F
14?F to 140?F
14?F to 113?F
14?F to 140?F
-4?F to 95?F
1.0
0.9
0.8
0
1
2
0?C
25?C
60?C
3 4
Charge Time (hours)
5
6
Storage
< 6 months
< 1 month
< 1 week
-20?C to 45?C
-20?C to 55?C
-20?C to 65?C
-4?F to 113?F
-4?F to 131?F
-4?F to 149?F
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
- V cut-off; - 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.
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
NICKEL METAL HYDRIDE HANDBOOK
AUGUST 2005
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.
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