This Panasonic High Temperature BR2450A, CR-2450A or BR2450A/GCN Battery will operate from -30C to+80C. Delivering 3V/550mAh of power, it is a non rechargeable lithium coin cell. This battery comes with 2 pins on the positive terminal and one pin on the negative.
BR-2450A/GBN Battery Specifications:
Size: 24mm x 5.0mm
Battery Type: Coin Cell
Voltage: 3.0v
Capacity: 560mAh
Chemistry: Lithium
CR-66