Rayovac Fusion alkaline batteries deliver maximum performance to high drain devices. These advanced alkaline AAA batteries are engineered with a Universal Power system to provide optimal performance in a wide variety of devices. Use these high performance Rayovac batteries in the most power-hungry devices, including your wireless microphone, video game controller and high-powered toys. An enriched core provides a longer battery life to keep your devices runningand increases dependability to last up to 12 years in storage. The patent pending Micro-Separator provides more room for active ingredients while its synthetic design increases reliability.