“What is better regarding the battery life? Working with the power adaptor always connected to the laptop? Or disconnected until the battery reaches a low level (say, 20%) and then charge the battery?”

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• It is recommended to charge your batter to 100% whenever possible. Your laptop battery will stop charging once it hits 100%. Keeping your power adaptor plugged in will not overcharge your battery.

  Answered by YourDellTeam 2 years ago

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• Disconnected until the Battery reaches low levels

  Answered by SuryaP 2 years ago

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