Multiple Battery Charger Charges up to 16 Receivers or Transmitters simultaneously. Recharges your AA (3V) Williams Sound products overnight. 120 VAC

In 2 convenient 8 packs. Long lasting power! No. AC10E-16. 1.4 Volts. Replaces all size 10 batteries. 1.4 Volts. Made in U.S.A.

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Duracell Activair DA10 Hearing Aid Batteries 1.4 Volts, Easy Tab Pack/4

Size 675 zinc-air hearing aid batteries which work well in either hearing aids or cochlear implants. You get 40 batteries which makes your cost only 62 cents each.

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This universal button cell tester is both compact and easy to read. Checks all popular sizes. Small sized and easy to carry. Large, easy to read, needle indicator shows dead, weak, or full power. Slide-out side drawer holds 2 type 675 or smaller batteries.

Size 312 zinc-air hearing aid battery. You get 80 batteries which makes your cost per battery only 57 cents.