صفحه شخصی محمود امین‌طوسی

Aug 25,2019

  • صفحه شخصی محمود امین‌طوسی

  • 25 years old Toshiba battery

    My calculator battery is discharged after 25 years. Thanks to its producer: TOSHIBA. It was working from 1989 until 2014, i.e. one quarter of a century 🙂