Panasonic CR1616 Lithium Cell 3volts Battery is a coin cell battery that works in many smaller electronic devices. It is able to power key fobs, glucometers, heart rate monitors, toys, computer backup equipment, and more. One of its most popular uses is in the Honda and Lexus key fobs, but it is also used in many other car brands and devices. These lithium batteries provide high power and long life with 3 Volts performance capacity.