Li-Ion Battery Conditioning

May 5, 2007 at 3:44 pm | Posted in Macintosh | Leave a comment

A friend recently suffered from dead battery syndrome after keeping his Powerbook fully charged for years in a closet. A blog post by David Weiss repeats Apples advice on how to condition batteries, but the most important advice is in the comments – Lithium-ion batteries should never be stored at full charge. The optimal charge level for storage is 40%; the laptop should be shut down to minimize battery depletion during storage.

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