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T: Mengapa kapasitas baterai 20000mAh, tetapi kapasitas pengenalnya adalah 12000mAh?
J: Karena voltase masukan perangkat seperti ponsel adalah 5V. Di dalam bank daya, 3.7V asli akan didorong ke 5V sebelum keluar.
Jadi kapasitas outputnya adalah 14800mAh ( 3.7V * 20000mAh/5V = 14800mAh).
Akan ada kerugian energi dalam proses step-up dan step-down, dan tingkat konversi energi: lebih dari 75%.
Akhirnya, kapasitas pengenal sekitar 5800mAh. (14800mAh * 75% = 11100mAh).
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