Power Source

The first and most basic issue to consider when choosing a vibrator is the power source. It might not seem like a big deal on the surface, but the difference in performance between electric vibrators and battery-powered vibrators can be significant. The question you want to answer is:
Would I prefer a portable vibrator that I can use where and when I like, or am I willing to sacrifice portability for a bit more power and the convenience of not having to replace batteries?
Electric vibrators are typically more powerful than battery-powered vibrators, but you need to have access to a wall socket to use them.
Its worth mentioning that battery-powered vibrators are not considered weak by any means, but its difficult for a few batteries to compete with the power supplied by a 110 volt wall socket.