Additional Details ------------------------------ Product description: The Duracell 21/23 12V Alkaline Battery is designed to provide reliable power to specialty devices like car alarms, key fobs, GPS trackers, remote controls, and other electronic devices. Duracell 21/23 batteries are guaranteed against defects in material and workmanship, so you can rest assured that these batteries will be ready when you need them. From storm season to the holidays, Duracell is the #1 trusted battery brand. POWER FOR A WIDE RANGE OF DEVICES: The Duracell 21/23 12-Volt Alkaline Battery is designed for use in a variety of compatible devices like car alarms, key fobs, GPS trackers, remote controls, and other electronic devices. LONG-LASTING POWER: Duracell High Power 21/23 12V Alkaline Batteries were developed to provide reliable performance for your specialty devices. DURACELL warrants these batteries against defects in material and workmanship. Should any device be damaged due to a battery defect, they will repair or replace it at their option. Designed for reliable performance in a wide range of high-power devices, the 21/23 is equivalent to battery types A23, MN21, 23AF, 23AE, and V23GA. #1 Trusted Battery Brand: From storm season to the holidays, Duracell is the #1 Trusted Battery Brand. 4-Pack of Batteries