All company battery avillebal Duracell, Siemens, Widex, Starkey, resound, powerone Sizes of batteries Hearing aids come in many different sizes and styles and with different power needs Size 10 - 5.8 mm wide by 3.6 mm high Size 312 - 7.9 mm wide by 3.6 mm high Size 13 - 7.9 mm wide by 5.4 mm high Size 675 - 11.6 mm wide by 5.4 mm high We deal with lowest price for Hearing Aid batteries. Ahmedabad, Rajkot, jamnagar, Anand Vadaj, Maninagar, Bapunagar Gandhinagar