HIGH PERFORMANCE ALKALINE BATTERIES: LR6 aa alkaline batteries last 6-8 times longer than standard zinc carbon aa batteries, 10 Years Shelf Life for storage. GOOD VALUE: You will get 12PCS AA batteries with durability and work great. No need for the expensive other batteries. And provide High-quality Warranty and Friendly Customer Service. EVERYDAY DEVICES: Batteries aa size deliver optimal power to common everyday household devices such as Christmas and Halloween decorations, Xbox controllers, toys, smoke alarms, flashlights, wireless mice, keyboards, clocks, etc ENVIRONMENTAL: 1.5-volt double aa batteries contain no mercury or cadmium. Please note our LR6 AA batteries can not be charged. LEAK-PROOF AA BATTERY: Won't leak and corrode with the leakproof design and sealed materials, protecting your electronic devices and family safe.