New In Packaging Beidongli CR2450 3V Lithium Coin/Button Cell Battery 4 Packs Of 5 (20 total batteries) Expiration Date of 12/2029 CR2450 battery number is standard, but different manufacturers use different prefix codes. It can directly replace the following numbers: DL2450 (Duracell's code) ECR2450 (Energizer's code) GPCR2450 (GP's code) KCR2450 (Kodak's code) 5029LC (The ANSI/NEDA designation)