Get the most from your essential devices with the reliable, long-lasting power you’d expect from Energizer batteries. Stock up on 9V batteries for smoke alarms and shavers, as well as doorbells. This pack is also a great choice if you need a trustworthy torch battery. Energizer Alkaline Power 9V batteries hold power for up to 3 years while in storage. With Energizer, the power’s ready when you are. The Energizer Alkaline Power range also includes AA, AAA, C and D batteries, so it’s easy to find reliable power in the size you need.