Keep your devices going with Energizer the world s number one battery brand. Energizer alkaline batteries with Power Seal Technology hold their power for up to 10 years when not in use. Energizer s industry leading Power Seal Technology also means no leaks - guaranteed (up to $250). Ideal for use in an array of low to high drain battery operated devices. Energizer developed the world s first mercury free battery and our batteries have been Mercury Free since 1991. Ten year shelf life no leaks - guaranteed and mercury free since 1991. Now that s positive energy.