Renata CR2477N 3V lithium coin cell battery.
This is a Swiss-made, 3-volt lithium battery known for its high energy density and reliability.
It has a high capacity of 950 mAh and a low self-discharge rate, giving it a shelf life of up to 10 years.
Common applications include medical equipment, computer motherboards, car key fobs, calculators, and various portable electronic devices.
Equivalent battery types include BR2477N, DL2477N, ECR2477, and KCR2477.
These batteries are available for purchase from various online retailers and electronics suppliers.