CopperTop Alkaline 9V Batteries, 72/CartonDuracell Coppertop all purpose alkaline batteries are not only dependable, they are also long lasting. You can take comfort in a ten year guarantee (five year guarantee for 9V) in storage. They are great for many of the devices you use on a daily basis. And from storm season to medical needs to the holidays, Duracell is the number one battery you can trust.