Depending on the particular vibrator you choose, it may require batteries that need to be replaced from time to time when they run down. Most battery-powered vibrators have small “watch” batteries, and they can be easily stored.
In addition to batteries, other vibrators can also be charged with a charging cable which can either be attached to a USB port in a laptop or other small electronic device or to a standard wall outlet. These vibrators usually take between 1 and 3 hours to fully charge.