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A23 or 23A 12-volt Alkaline batteries are typically used in small radio frequency devices such as garage door openers, keyless entry systems and medical devices where only infrequent pulse current is used. Our ACDelco Super Alkaline batteries are equipped with advanced technology to deliver maximum power you can count on. Everyone wants a brand they can trust. Dependable and reliable, the ACDelco brand has represented quality batteries and products since 1916.ENVIRONMENTAL IMPACT: Our 1.5-volt alkline batteries contain no mercury or cadmium, making them a smart choice for your family and for the environment. 5-YEAR SHELF LIFE: All ACDelco alkaline batteries are built to last with an impressive five-year shelf life. HIGH CAPACITY POWER: ACDelco super alkaline 12V batteries are designed to deliver long lasting power that is consistent and reliable. EVERYDAY DEVICES: ACDelco size A23 batteries deliver optimal power to common every day household devices such as wireless doorbells, garage door openers, key fobs, remote controls, toys and more. A23 12V BATTERIES: Pack of 12 of size A23 super alkaline batteries providing long lasting, dependable power.Best Sellers Rank: See Top 100 in Health & Household. Recommended Uses For Product: Radio. Compatible Phone Models: Remotes. Battery Cell Composition: Alkaline. Brand: Powermax. Number of Batteries: 12 12V batteries required. International Shipping: This item can be shipped to select countries outside of the U.S. Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues. Country of Origin: China. : B00TYA7Y2O. Manufacturer: ACDelco. Date First Available: February 26, 2015. Batteries: 12 12V batteries required. (included). Item model number: 6598318054. Product Dimensions: 1.08 x 0.4 x 0.4 inches; 4.16 Ounces.