Does a battery drain when not in use? Are new batteries fully charged?
All batteries have some “self-discharge,” usually 1% to 3% per day. That means that the battery will be dead after a month or two of sitting on the shelf and will need a full charge. A battery left uncharged for six to twelve months may become permanently unusable. Brand new batteries are always shipped without much charge, and should be charged before use. For more information on portables and batteries, see www.apple.com/batteries.
Published March 24, 2009 12:00 PM
Last modified on June 16, 2009 6:27 PM
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