My favorite part of the QC 25s is the top of the band, which is wrapped in a soft-touch black canvas cloth with squeezably soft, jet-black faux suede. The lower part of the headphones, including the outer earcups, is made of matte plastic. The earcups are gray and feature a ridged chrome Bose logo.y favorite part of the QC 25s is the top of the band, which is wrapped in a soft-touch black canvas cloth with squeezably soft, jet-black faux suede. The lower part of the headphones, including the outer earcups, is made of matte plastic. The earcups are gray and feature a ridged chrome Bose logo.
In an application like that, they could expect to see an OPTIMA battery last up to four years. However, in a more moderate climate, like San Diego, if someone might see four years out of a flooded battery, they could see up to eight out of an OPTIMA. How the batteries are used also impacts performance and lifespan.
Average. The average life span of a cell phone battery is from 400 to 500 charge cycles. That means the average battery lasts from one to two years. A decrease in the duration of the battery's lifespan between charge cycles indicates that the battery should be replaced.Lithium ion batteries usually maintain their full capacity for most of their lifetimes, and then die suddenly.hat means the average battery lasts from one to two years. A decrease in the duration of the battery's lifespan between charge cycles indicates that the battery should be replaced. Lithium ion batteries usually maintain their full capacity for most of their lifetimes, and then die suddenly.