A mobile phone gets fully charged in 3 hours and, when kept idle, it drains 1% of
the battery every 9 minutes. If the completely discharged mobile phone is charged for
2.25 hours and then unplugged and kept idle for 3 hours, what would be the remaining
charge in the phone's battery?
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i don't know that but if we keep full charge it will decrease the battery life and also if it is below 20% than only we should keep charging
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