Duracell D389/390Pk08 Batt 389/390 1.5V ( 4 Cells per Order) Sold as 1 Each. Get the reliable performance you need for your critical medical devices. High capacity, low self-discharge for longer service life. Longer lasting to increase productivity. GUARANTEED FOR 4 YEARS IN STORAGE: Duracell 389/390 Silver Oxide Button batteries are guaranteed for 4 years in storage, so you can be confident these batteries will be ready when you need them.. BUILT FOR RELIABLE PERFORMANCE in a wide range of high-powered devices, the 389/390 is equivalent to SR54, SR1130W, SR1130SW, 389, 390, D389, D390, V389, V390, and SR11 battery types