Batteries Duracell DURDA10B16ZM10 Button Cell Hearing Aid Battery, #10, 16/Pk, Power Protection / Security > Batteries Designed so their extra-long tab is simple to handle, easy to install and their packaging easy to open. Easy to open packaging. Engineered for long lasting quality performance. Guaranteed for four years in storage. Guaranteed against defects in material and workmanship. Should any device be damaged due to a battery defect, Duracell will repair or replace it at their option.