Transistor battery longevity

[Segilla]

Does volume have any effect on a battery's life?

[mibn2cweus]

Even in equipment using motor driven devices (CD, Tape drives) most of the power goes to drive the loudspeaker/s, especially at higher volumes.

[dynamicduo]

Yes, it will shorten the life of the battery. The battery is an energy store which is converted into sound energy (and heat energy, possibly light energy on a display etc). The greater the volume, the more energy produced and therefore the more energy transferred from the battery. However, the efficieccy of a radio isn't that good so the effect isn't great. Other energy losses remain much the same irrespective of the volume