Energizer MAX 9V Alkaline Battery - Max Alkaline 9 volt Batteries provide a long-lasting power source for such common workplace devices as calculators, pencil sharpeners, cameras, flashlights and portable tape recorders. Batteries are date-coded and 100 percent mercury-free. Reliable energy made possible with Energizer's innovative PowerSeal Technology Up to 5-year shelf life - so you'll always have power when you need it