Replacement battery for CMOS/BIOS. Specifications: 1200mAh, 3V, Lithium, Lithium Carbon Monofloride (BR). Compatible with: CMOS/BIOS. Replaces: 2587678-8008, 520C, 530C, 530T (Old), BR2/3A, BR2/3ASSP and 8 more. G&L Electronics replacement battery designed for CMOS/BIOS devices. Delivers steady power for reliable everyday operation.