EVEREADY BATTERY CO. Internet: www.energizer.com 1-800-383-7323 / USA/ USA 1-800-383-7323 1-800-383-7323 / CANADA 1-800-383-7323 / CANADA + 44 (0) 208 920 2306 / EUROPE ENERGIZER NO. 389 Industry Standard Dimensions in mm (inches) Chemical System: Silver Oxide (Zn/Ag20) Designation: Battery Voltage: Average Weight: Volume: Average Capacity: ANSI / NEDA-1138SO, IEC-SR54/T54 1.55 Volts 1.35 grams (0.048 oz.) 0.32 cubic centimeters (0.019 cubic inch) 85 mAh to 1.3 volts (Rated at 15k ohms continuous at 21ºC) TYPICAL DISCHARGE CURVE Simulated Test @ 21ºC (70ºF) Closed Circuit Voltage 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 DESIGNED FOR USE ON CONTINUOUS LOW DRAIN HIGH PULSE DRAIN ON DEMAND 0 200 400 600 800 1000 Service, Hours Simulated Application Test Estimated Average Service at 21ºC (70ºF) Schedule: Typical Drains at 1.55V (milliamperes) Load (ohms) 1.3V 24 hours/day 0.103 15,000 825 Hours Cutoff Voltage INTERNAL RESISTANCE: Closed circuit voltage no less than 1.20 volts on a load of 100 ohms at 21ºC (70ºF) for 0.1 to 2.0 seconds. Typical closed circuit voltage during discharge on a load of 100 ohms for 5.0 seconds. Depth of Discharge as Percent of Rated Capacity Temperature 21ºC (70ºF) -10ºC (14ºF) 0% 1.41V 0.98V 40% 1.30V 0.75V 80% 1.25V 0.74V 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 - 4336B Page 1 of 1