The Varta BAT-V377 is a long-life, replaceable cell alkaline money battery designed for watches, computers, remote controls and other electronic devices. It is a cylindrical cell with a diameter of 7.9mm and a height of 3.6mm, and a storage capacity of 37 mAh. The BAT-V377 is compatible with applications that use 377, SR66, SR626SW, SR621SW and V377. This button cell is made from zinc, manganese dioxide, and potassium hydroxide and has an operating temperature range of -25 to 50 degrees Celsius. It has a nominal voltage of 1.55v, has a shelf life of 8 years, and is capable of providing an output current between 1.5-3.5mA. It is mercury-free and widely available on the market.