ASUS Battery Information Center. The battery pack's service life will depend on the environment temperature, humidity, and notebook PC usage. The battery capacity usage versus cycle performance attenuation follows a linear type curve. Lithium-ion (Li-ion) batteries typically have a lifespan of between 300 and 500 cycles.
1 Some state that the average human attention span is approximately 5 minutes; others state that most healthy teenagers and adults are unable to sustain attention on one thing for more than about 20 minutes at a time, although they can choose repeatedly to re-focus on the same thing.
And there are statistics too. They say that the average attention span is down from 12 seconds in the year 2000 to eight seconds now. That is less than the nine-second attention span of your average goldfish. You might have seen those stats in Time magazine, the Telegraph, the Guardian, USA Today, the New York Times or the National Post.