In 1984 I bought a CASIO scientific calculator fx-100 which included 2 AA 1.5V alkaline Casio batteries [Casio Mabic C8501]. I have been using this calculator every single day throughout my student and professional life (total:28 years) with the SAME two batteries. I have written to CASIO asking them how could this be possible but I was ignored. I have asked several specialists and they were all very surprised. Could anyone please give me a logical answer?
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