Procell Alkaline industrial batteries are general purpose batteries, ideal for powering mid drain and low drain professional devices. These batteries will deliver dependable power for important battery-operated workplace devices. Procell Alkaline industrial batteries are guaranteed for seven years in storage (five years for 9V batteries in storage). Battery Type: Alkaline; Battery Size: D; For Use With: Professional and Industrial Electronic Devices; Voltage: 1.5 V.