D
Classification: Rechargeable
Chemical System: Nickel-Metal Hydride (NiMH)
Designation: ANSI-1.2H4
Nominal Voltage: 1.2 Volts
Rated Capacity: 2500 mAh* at 21°C (70°F)
Typical Weight: 73.0 grams (2.6 oz.)
Typical Volume: 57.0 cubic centimeters (3.5 cubic inch)
Terminals: Flat Contact
Jacket: Plastic
* Based on 500 mA (0.2C rate) continuous discharge to 1.0 volts.
0ºC to 40ºC (32ºF to 104ºF)
0ºC to 50ºC (32ºF to 122ºF)
Storage: -20ºC to 30ºC (-4ºF to 86ºF)
Humidity: 65±20%
NOTE: Operating at extreme temperatures, will significantly
impact battery cycle life.
Impedance (milliohms)
ENERGIZER NH50-2500 (HR20)
Specifications
mm (inches)
Cell Charged
Cell 1/2 Discharged
Value tolerances are ±20%.
Frequency (Hz)
Internal Resistance:
The internal resistance of the cell varies with state of charge, as follows:
11 milliohms
21 milliohms
1000
9
Above values based on AC current set at 1.0 ampere.
Contents herein do not constitute a warranty and are for reference only.
Industry Standard Dimensions
Discharge Characteristics
This data sheet contains typical information specific to products manufactured at the time of its publication.
Important Notice
Charge:
Operating and Storage Temperatures:
To maintain maximum performance, observe the following general
guidelines regarding environmental conditions:
(charged cell)
(tolerance of ±20% applies to above values)
AC Impedance (no load):
The impedance of the charged cell varies with frequency, as follows:
Discharge:
0.9
1.0
1.1
1.2
1.3
1.4
0.0 0.5 1.0 1.5 2.0 2.5
Cell Voltage
Hours of Discharge
PRODUCT DATASHEET
0.9
1.0
1.1
1.2
1.3
1.4
0 3 6 9 12
Cell Voltage
Hours of Discharge
Typical Performance at 21ºC (70ºF)
250 mA
(0.1C)
500 mA
(0.2C)
1.50 (0.059)
Minimum
9.50 (0.374)
Maximum
34.20 (1.346)
32.30 (1.272)
(+)
(-)
61.50 (2.421)
59.50 (2.343)
18.0 (0.709)
Minimum
Form No. NH50-2500GL0218 Page 1 of 1