Duracell High Power Lithium CR2 batteries are made with high-purity lithium for long lasting power guaranteed for your smart home devices (sensors, keyless locks, smoke detectors), photo flash, flashlights, bike accessories and electronic dog collars. They have up to 10 years of in-storage guarantee so you can be confident these lithium batteries will be ready when you need them. Duracell High Power Lithium CR2 batteries use high-purity lithium. Duracell High Power Lithium CR2 batteries - long lasting power guaranteed. Duracell High Power lithium batteries are available in a variety of sizes: CR2, 123. Pack of 2 batteries. 3V. Manufacturer's 1 year guarantee. EAN: 5000394030480.