Duracell 312 with 50% extra life.
Duracell Size 13 Hearing Aid Battery (10 Packs of Six Cells)
2-Power Duracell Ultra D Size (2 Pack)
2 X RAYOVAC SIZE: 312-HEARING AID BATTERIES (2 Packs Of 8 Batteries). Total: 16
Duracell Size 312 1.4 V Zinc Air Easytab Hearing Aid Batteries - Pack of 6
