How long should the battery last?

This all depends on the hearing aids and the batteries that they use:

  • Invisible in canal (IIC) size 10 hearing aid batteries: 3-5 days
  • Receiver in the ear (RITE) size 312 hearing aid batteries: 5-10 days
  • Behind the ear (BTE) size 13 hearing aid batteries: 7-10 days
  • Phonak Lyric extended wear hearing aid: 2-3 months