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Zinc Air Battery

There are four standard battery sizes used in today's hearing instruments. All hearing aid batteries are color coded with a tabbed label, the colors differentiate the battery size. This is according to a world-wide standard for the industry. 

All hearing instruments require a Zinc Air battery, which uses air outside the battery as a source of power. The colored label seals the air holes and ensures the freshness of the battery until it is needed. It is not recommended to re-attach the label when the battery is not in use, as this will not extend the life of the battery.

  • Size 675: Blue
  • Size 13: Orange
  • Size 312 Brown
  • Size 10: Yellow

Changing the Battery

  • With most digital hearing aids, you will get warning beeps indicating that your battery needs to be changed. The beeps will continue for several minutes until the battery becomes dead.
  • With analog hearing aids, if you find that you need to turn the volume up more than usual, if sounds are distorted, or your hearing aid is dead, then it is time to change the battery.
  • Follow the procedure outlined in the instruction manual that accompanied the hearing instrument(s) when replacing the battery.
  • Lift the notch at the edge of the battery compartment and gently swing open the door. Remove the dead battery and properly dispose in a receptacle.
  • Remove the color tab on the new battery and insert the battery with the "+" side facing up. Removing the tab will allow air to enter and activate the battery within a few seconds.
  • Gently swing the door into the closed position. The compartment should close easily, do not force it. If resistance is noted, check that the battery is inserted correctly.

Proper Battery Storage

  • Always store batteries in dry places at room temperature.
  • Do not store batteries in extreme temperatures such as a refrigerator, freezer, hot car or near a source of heat.
  • Don't allow batteries to get wet, this will cause rapid erosion. If the battery gets wet, remove it from the hearing instrument and properly dispose. Remove any excess moisture from the battery compartment and insert a new, dry battery.

Tips to Remember About Hearing Aid Batteries

  • Batteries should not be carried loosely in your purse/pocket since metal objects, such as coins or keys, can short out a battery.
  • Occasionally, batteries have been mistaken for pills, so always verify your medication before swallowing.
  • Since hearing aid batteries can be tempting and easily swallowed by small children, always store and dispose of batteries out-of-reach of children.
  • Hearing aid batteries are dangerous if swallowed. If swallowed, see a doctor immediately.

Important: Always discard used batteries. Small batteries can be harmful if swallowed. Keep batteries out of the reach of pets and small children. In case of ingestion, contact your physician or, if in the US call the National Button Battery Hotline at (202) 625-3333.