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## ENGINEERING DATASHEET 

**EVEREADY BATTERY CO.** 1-8001 **-** 383800 **-** 7323 / USA 383-7323 / USA Internet: www.energizer.com 1-8001 **-** 383800 **-** 7323 / CANADA383-7323 / CANADA + 44 (0) 208 920 2306 / EUROPE 

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ENERGIZER NO. NH50<br>**----- End of picture text -----**<br>


## **Industry Standard Dimensions in mm (inches)** 

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**Description:** Rechargeable 1.2V **Chemical System:** Nickel-Metal Hydride (NiMH) **Designation:** ANSI-1.2H4 **Battery Voltage:** 1.2 Volts **Average Capacity:** 2500 mAh (to 1.0 volts) (Based on 500 mA (0.2C) discharge rate) **Average Weight:** 73.0 grams (2.6 oz.) **Volume:** 56.5 cubic centimeters (3.5 cubic inch) **Jacket:** Plastic Label 

**Internal Resistance** ~~—_~~ The internal resistance of the cell varies with state of charge, as follows: ~~_—_~~ Cell Charged Cell 1/2 Discharged ~~a~~ 11 milliohms 21 milliohms (tolerance of ±20% applies to above values) 

~~Sn~~ **AC Impedance (No Load)** The impedance of the charged cell varies with frequency, as follows: 

Frequency (Hz) Impedance (milliohms) (Charged Cell) 1000 9 

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TYPICAL DISCHARGE CHARACTERISTICS<br>1000<br>Average Performance at 21ºC (70ºF)<br>1.41.31.21.1 a——> iN 250 mA(0.1C) Note: Value tolerances are ±20%<br>500 mA<br>1.0 SN (0.2C) Operating and Storage Temperatures<br>0.9 ee ee ee<br>0 2 4 6 8 10 12<br>Hours of Discharge<br>Charge @ 0.1C:<br>TYPICAL DISCHARGE CHARACTERISTICS Discharge @ 0.1C:<br>Storage:<br>Average Performance at 21ºC (70ºF)<br>1.4 ( 6 Months Max. )<br>1.3<br>1.25 A ( 2 Years Max. )<br>1.2<br>1.1 SoS 2.5 A (0.5C)<br>1.0 \ (2.0C) 5.0 A a (1.0C)<br>0.9 —s ee<br>0 0.5 1 1.5 2 2.5<br>Hours of Discharge<br>Cell Voltage<br>Cell Voltage<br>**----- End of picture text -----**<br>


Note: Above values based on AC current set at 1.0 ampere. Value tolerances are ±20% 

Ranges of temperature applicable to operation of the NH50 cells are: 

**Charge @ 0.1C:** 32ºF to 122ºF (0ºC to 50ºC) **Discharge @ 0.1C:** – 4ºF to 122ºF (-20ºC to 50ºC) **Storage:** – 40ºF  to 122ºF (-40ºC to 50ºC) ( 6 Months Max. ) – 4ºF to 95ºF (-20ºC to 35ºC) ( 2 Years Max. ) 

Operating at extreme temperature will significantly affect service and cycle life. 

## **Important Notice** 

This data sheet contains information specific to batteries manufactured at the time of its publication. **Contents herein do not constitute a warranty.** 

Copyright © Eveready Battery Co. Inc. - All Rights Reserved 

Form No. EBC - 7104E 

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