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NICKEL METAL HYDRIDE BATTERIES: INDIVIDUAL DATA SHEET
HHR370AH Cylindrical L-Fat A size (HR 18/67)
Dimensions (with Tube) (mm)
Typical Charge Characteristics
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 0
-10C 25C 60C Charge: 330mA(0.1 It)16hrs.
18.2 + 0 - 0.7
(+)
Voltage (V)
2
4
6
8
10
12
14
16
18
20
Charge Time (hours)
Typical Discharge Characteristics
67.0 + 0 - 1.5
120 110
Capacity Ratio (%)
100 90 80 70 60 50 40
Charge: 330mA(0.1 It)15hrs Disharge: 660mA(0.2 It),cut off voltage 1.0V Disharge Temperature: 20C
()
Specifications
Diameter Height Approximate Weight mm 18.2+0/-0.7 67.0+0/-1.5 Grams 60 inch 0.72+0/-0.03 2.64+0/-0.06 Ounces 2.12
30 - 20
- 10
0
10
20
30
40
50
60
70
Temperature (C)
Nominal Voltage Average2 Discharge Rated (Min.) Capacity1 Approx. Internal impedance at 1000Hz at charged state. Standard Rapid3 Charge Low Rate Charge Standard
1.2V 3700 mAh 3500 mAh
Voltage (V)
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 0
Charge: 330mA(0.1 It)16hrs,25C Disharge: 660mA(0.2 It)
20m 370mA x 16hrs. 1750mA x 2.4 hrs.4 185mA x 32 hrs. 123mA x 48 hrs. F C 14F to 140F -10C to 60C 14F to 113F -10C to 45C -10C to 60C 14F to 140F -4F to 95F -20C to 35C -4F to 113F -20C to 45C -4F to 131F -20C to 55C -4F to 149F -20C to 65C
Ambient Temperature
Rapid Discharge < 1 year < 6 months Storage < 1 month < 1 week
0C 25C 60C
1
2
3
4
5
6
Charge Time (hours)
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 2C/min - V cut-off; - V per cell = 5 to 10 mV T-control; T=65C Rapid charger timer; 2.4h (at 1.25a) Trickle timer; within 2h
4 With control system
Note:
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.
[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 2003
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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