The Energizer Industrial 9 Volt battery is a strong, long-lasting alkaline battery. Energizer 9 Volt Industrial batteries are the preferred choice of professionals - sound technicians, broadcasters, hospitals, police and fire departments nationwide. The Energizer Industrial 9 Volt battery contain the long lasting power found in the Energizer Max alkaline with a design and packaging for businesses, organizations, agencies that use batteries in their operations. Outstanding performance and reliability combined with a great price makes the Energizer 9 Volt battery a great buy and 100% guaranteed.