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No hearing aid battery lasts longer 60 pack (10 blisters with 6 batteries each) in size 675 (blue) hearing aid batteries High-quality, mercury-free cells from the leading hearing aid battery manufacturer High energy density and almost completely flat trajectory - Powerful from start to finish Robust stainless steel housing provides ultimate stability and protection against corrosion
AmazonDoing Varta Voltage: 3V Capacity 1600 mAh Length 34.5 mm Diameter 17 mm