Lithium Battery
Duracell High Power Lithium CR2 batteries are made from ultra-pure lithium - providing reliable, long-lasting performance for smart home devices (sensors, keyless locks, smoke detectors), flashlights, torches, bicycle accessories, and electronic dog collars. They come with a shelf life guarantee of up to 10 years thanks to Duralock Power Preserve technology, so you can trust that these lithium batteries will be ready to use when you need them.