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Macbook Air battery life taken a tumble - causes?

(1 Post)
somebodythatiusedtoknow Wed 12-Nov-14 13:17:09

My Macbook Air is only about six months old but the battery life has declined noticeably already.
It was fully charged at 10am and three hours later I'm down to 17%.

Any ideas? I've already checked CPU usage as I was told that was a cause sometimes. My web browser is using up to 30%. Is that a lot?

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