CR2477. This Eunicell CR2477 3V lithium button cell battery has a nominal capacity of 1100mAh 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: 1100 mAh. Size: 24.5mm x 7.5mm. Also replaces: DL2477, ECR2477, BR2477, BR2477-1W, KCR2477 & LM2477