CR2450. This Eunicell CR2450 3V lithium button cell battery has a nominal capacity of 600mAh and is supplied in a pack of five. Coin cell batteries are commonly used in precision engineering tools and automotive remote key fobs as well as many other applications. . 3V lithium button cell battery. Nominal capacity: 600 mAh. Size: 24.5mm x 5mm. Also replaces: DL2450, CR2450N, ECR2450, BR2450, BR2450-1W, CR2450N, KCR2450, LM2450 & 5029LC