This Duracell Plus Power 9v tub is packed and designed with storage needs and space in mind. They are compactly packed, which means they can be stored away whilst maintaining their reliable and durable power, using minimal space. This pack of ten keeps the reliability and durability that we know and love of the Duracell Plus Power brand, the only difference is the packaging. The 9v battery is commonly used in the kind of device that would require less frequent replacement.