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.
The parents responded with a rating of 1 ânot at all like my childâ up to 5 âa lot like my childâ. An estimate of the childâs attention span on a scale of 1 to 5 was then generated from the average of the answers. Researchers then followed up when the children had become young adults.