A 2025 key fob battery is a small, coin-shaped battery commonly used to power key fobs, garage door openers, and other small electronic devices. It is a 3-volt lithium battery with a diameter of 20 millimeters and a thickness of 2.5 millimeters.
2025 key fob batteries are reliable and long-lasting, with a shelf life of up to 10 years. They are also relatively inexpensive and readily available at most hardware and electronics stores.