Dakota Alert, CR123A, 4-Pack of 3V Lithium Batteries for MAPS-MURS Alert Probe Sensor, DCPA-4000, DCPT-4000, DCPT-2500 TransmittersThe 3V Batteries can provide power to a wide range of electronic devices from cameras pagers tactical lights many other devices that require longer life and more power than traditional alkaline batteries. Designed with lithium technology these batteries have a long shelf life.Features:3V BatteriesLong Shelf LifeNo Mercury 0 Mercury CadmiumLithium Technology