Why were the volts of the second battery decreased?
One day, I realized that my iPod Touch wouldn't turn on, so I opened it and I diagnosed that the volts of the battery weren't 3.7 (as they had to be), but 2.1! So I replaced that battery with a new one, and my iPod worked successfully. But after three days, it stoped working again! Then I checked again the battery and the volts were 3.04! Could anyone help me, please?
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