1/2AA 3.6V Lithium Battery - Long Lasting Power for Smoke Detectors, Medical Devices & Emergency Lights | High Performance Rechargeable Battery for Home and Industrial Use

These high capacity batteries are used in many desktop and notebook computers to retain date, time and configuration information while the computer is switched off. They are also useful where long shelf life is important or when the battery is to be fitted into difficult or sealed access areas. Storage life is up to 10 years.