Toshiba's Hearing Aid Batteries are designed to be highly reliable and consistent in devices which provide optimal service life, with convenient dial card design and protective tab for ease of use and long shelf life of 3 to 4 years. These are high quality Zinc Air batteries will produce clear tones, very low distortion and a constant voltage resulting in fewer volume adjustments and fewer battery replacements.
Zinc air batteries are non rechargeable and require oxygen to function properly. Keep the protective tab on the battery until it is ready to use.
