Rayovac Fusion 9V Batteries (2 Pack), Alkaline 9 Volt Batteries

Customers find these 9V batteries work well, with one mentioning they power garage remote controls effectively. They receive positive feedback for their power, with one customer noting they don't explode or leak acid, and customers appreciate their exact fit and suitability for smoke detection. The battery life receives mixed reviews - while some say they last a long time, others report they barely last three months.