9V Lithium Battery, High Energy Density, Up to 5x More Than Alkaline, Up to 10x More Than Carbon Zinc, Up to 10 Year Shelf Life, High Running Voltage, Lightweight 18% Less Than Alkaline, Wide Operating Temperature Range, Meets ANSI Alkaline 1604 Size Specifications, Applications Smoke Alarms, Carbon Monoxide Detectors, Wireless Security Devices, Alkaline 9V Replacement, Clip Strip.