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.
Time spent watching video on mobile devices will increase from 30 minutes daily among all US adults in 2014 to 39 minutes per day this year, and average daily video time on other connected devices across the US adult population will increase from 9 minutes last year to 13 minutes each day in 2015.