why does a battery operated clock start running fast?
<answer> Because the ones that plug in the wall synchronize to the 60 Hertz alternating current that the electric company supplies to your home. <context> Report Abuse. If you are talking about clocks that plug in the wall, it's hard to bellieve they would be running too fast. The ones that plug in the wall synchronize to the 60 Hertz alternating current that the electric company supplies to your home. They utility companies are very accurate with the frequency of the incoming signal. If the clocks are battery operated, you just have bad luck.