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.
1 Less than 5% of adults participate in 30 minutes of physical activity each day; only one in three adults receive the recommended amount of physical activity each week. 2  Only 35 â 44% of adults 75 years or older are physically active, and 28-34% of adults ages 65-74 are physically active. The least likely were Delaware (46.5%), West Virginia (47.1%) and Alabama (47.5%). 2  The national average for regular exercise is 51.6%. 3  Children now spend more than seven and a half hours a day in front of a screen (e.g., TV, videogames, computer).