On my laptop computer, sometimes I leave the power cord pluggedin all night as I forget to unplug it. I always thought that it would not hurtthe battery. I was told by someone thatthe cord should not be plugged in any longer than needed. He also said that itis not a good idea to charge the battery unless it is needed. In other wordsdon't plug in the power cord unless the battery is at least 75%...
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