· One 12-pack of CR123A Lithium 3-volt batteries with 1,550mAh capacity NOT RECHARGEABLE· Improved design offers up to 10-year leak-free shelf life; store for emergencies or use right away· Ideal for flashlights, night-vision goggles, and more· Not recommended for Arlo security cameras and for one-time use only; for rechargeable batteries check out Amazon Basics’ rechargeable line