Duracell® Procell PC1604BKD Non-Rechargeable Dry Cell Alkaline Battery, 9V Size, Manganese Dioxide, 9 V, 600 mAh - Premier Safety
Amazon.com: Duracell - CopperTop 9V Alkaline Batteries - long lasting, all-purpose 9 Volt battery for household and business - 2 count : Health & Household
Duracell 9-Volt Batteries (4-Pack) in the 9-Volt Batteries department at Lowes.com