Energizer CR2016 Lithium Coin Batteries deliver reliable, long-lasting 3V power for a wide array of compact and specialty electronic devices. Engineered with advanced lithium manganese dioxide chemistry, these batteries provide stable voltage, a typical capacity of 90-100mAh, and exceptional performance in extreme temperatures from -30°C to 60°C (-22°F to 140°F). The included Power Preserve Technology ensures a 10-year storage guarantee, maintaining freshness and readiness when stored correctly.This 2-pack is the ideal power source for car key fobs, keyless entry systems, medical devices (glucose monitors, heart rate monitors), calculators, digital watches, computer motherboards (CMOS backup), electronic toys, games, and security sensors. Designed with safety and sustainability at the forefront, the packaging is child-resistant to help prevent accidental ingestion. The batteries are mercury-free, reflecting Energizer’s commitment to responsible manufacturing, and come in recyclable packaging. Trust Energizer for dependable energy backed by innovation and a dedication to a greener future.