The Duracell Ultra CR123A 3v lithium battery offers high capacity for a long battery life and high drain capability. These Duracell DL123A lithium batteries have a long shelf life of around 8 years. mostly used in cameras, but is used in , camera flashes, camcorders, wireless PIR, wireless alarms, reed switches, shock sensors.
There are many differenent part numbers for the battery, with each manufacturer using a little change of the main part number. So the 123 battery is often called CR123, CR123A, 123A, DL123, DL123A, EL123 or EL123A. The DL in the part numbers DL123 or DL123A simply stands for Duracell.