Duracell Hearing Aid 675, Single-use battery, Zinc-Air, 1.45 V, 6 pc(s), 675 mAh, 4 year(s) Duracell Hearing Aid 675. Battery type: Single-use battery, Battery technology: Zinc-Air, Battery voltage: 1.45 V. Height: 0.213" (5.4 mm), Diameter: 0.457" (1.16 cm), Weight: 0.0593 oz (1.68 g)