CR1225. This Eunicell CR1225 3V lithium button cell battery has a nominal capacity of 50mAh 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: 50 mAh. Size: 12.5mm x 2.5mm. Also replaces: DL1225, ECR1225, BR1225, DL1225B, BR1225-1W, CR1225-1W, KCR1225, LM1225, 5020LC & L30