This battery can be bought in large quantities and stored away until needed to prevent panic buying, when the inevitable happens and the battery runs out of power. Quality of energy is not compromised as the battery, when unused, in storage will retain its energy for up to seven years. When using equipment such as detachable flashes and digital cameras, it is absolutely paramount that the battery used to power them demonstrates strength and reliability in power. Keeping to Duracell's reputation of high quality products, the Duracell CR123A battery demonstrates strength and reliability in power as well as fantastic durability, ensuring you are ready capture every moment.