Panasonic HHR250SCH User Manual
NICKEL METAL HYDRIDE BATTERIES: INDIVIDUAL DATA SHEET
5
0
0
HHR250SCH Cylindrical SC size (HR 23/43)
Dimensions (with T ube) (mm)
+-0
23.0
1.0
(+)
+-0
43.0
1.
( )
Specifications
mm inch
Diameter
Height
Approximate
Weight
23.0+0/-1.0
43.0+0/-1.5
Grams
55 1.94
0.91+0/-0.04
1.69+0/-0.06
Ounces
Typical Charge Characteristics
2.0
1.8
1.6
1.4
Voltage (V)
1.2
1.0
0.8
0 500 1000 1500 2000 2500 3000 3500 4000 450
Charge: 0.1It x 15h at 25, 40, 60˚C Rest: 3h
Discharge: 0.1It to 1.0V at 25˚C
Capacity (mAh)
Typical Discharge Characteristics
2.0
1.8
1.6
1.4
Voltage (V)
1.2
1.0
0.8
0 500 1000 1500 2000 2500 3000 3500 4000 450
Charge: 0.5It x 2.4h at 25˚C Rest: 1h
Discharge: 1, 2, 3It to 0.8V at 25˚C
Capacity (mAh)
25˚C
40˚C
60˚C
1It
2It
3It
Nominal V oltage 1.2V
Discharge
Capacity
1
Average
Rated (Min.)
Approx. Internal impedance
at 1000Hz at charged state.
Standard
Charge
Low Rate
Charge
Standard
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
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.
Rapid
Rapid
2
3
2650 mAh
2500 mAh
250mA x 16hrs.
1250mA x 2.4 hrs.
125mA x 32 hrs.
83mA 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
5mΩ
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
1.6
4
F
˚
1.5
1.4
1.3
1.2
1.1
1.0
Voltage (V)
0.9
0.8
0.7
0.6
0 500 1000 1500 2000 2500 3000
Charge: 0.5It x 2.4h Rest: 1h
Discharge: 10, 20, 30A to 0.8V at 20˚C
10A
20A
30A
Capacity (mAh)
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
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.
NICKEL METAL HYDRIDE HANDBOOK
AUGUST 2005
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