Dr. Badstubner made a great video about how to change a hearing aid battery. You can view it below. She also mentioned that hearing aid batteries are color coded, according to size. This color coding is across manufacturers. For example, each hearing aid battery manufacturer will color code the packaging and/or battery BROWN for a size 312 battery.

  • size 10: yellow
  • size 13: orange
  • size 312: brown
  • size 675: blue