PRODUCT DATASHEET
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Rechargeable D-2500 (HR20)
D
Specifications
Classification:
Chemical System:
ACCU Rechargeable
Nickel-Metal Hydride (NiMH)
Designation:
Nominal Voltage:
Rated Capacity:
IEC-HR20
1.2 Volts
2500 mAh (to 1.0 volts)
Based on 500 mA (0.2C) discharge rate
Industry Standard Dimensions
(millimeters)
Typical Weight:
Typical Volume:
Jacket:
73.0 grams
56.5 cubic centimeters
Plastic Label
1.50
34.20
32.30
Internal Resistance:
Minimum
9.50
Maximum
The internal resistance of the cell varies
with state of charge, as follows:
(+)
Cell Charged
11 milliohms
Cell 1/2 Discharged
21 milliohms
61.50
59.50
(tolerance of ±20% applies to above values)
AC Impedance (No Load):
(-)
18.0
Minimum
The impedance of the charged cell varies
with frequency, as follows:
Typical Discharge Characteristics
Frequency (Hz)
1000
Impedance (milliohms)
Typical Performance at 21ºC
(Charged Cell)
9
1.4
1.3
1.2
1.1
1.0
0.9
Above values based on AC current set at 1.0 ampere.
Value tolerances are ±20%.
250 mA
(0.1C)
500 mA
(0.2C)
Operating and Storage Temperatures:
To maintain maximum performance, observe the following
general guidelines regarding environmental conditions.
0
3
6
9
12
Hours of Discharge
Charge:
Discharge:
0ºC to 40ºC
0ºC to 50ºC
Typical Performance at 21ºC
1.4
1.3
1.2
1.1
1.0
0.9
Storage: -20ºC to 30ºC
Humidity: 65±20%
1.25 A
(0.5C)
Operating at extreme temperatures,
will significantly impact battery cycle life.
2.5 A
(1.0C)
5.0 A
(2.0C)
0.0
0.5
1.0
1.5
2.0
2.5
Hours of Discharge
Important Notice
This datasheet contains information specific to battery chargers manufactured at the time of its publication.
©Energizer Holdings, Inc. - Contents herein do not constitute a warranty.
Form No. EBC - 8828EU
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