Using the correct battery will make a big difference in both the performance and the life expectancy of a toy. I'm not referring to the size of the battery, but more the type of battery. We recommend non alkaline batteries for most situations.

General alkaline batteries are pretty powerful. So powerful they could actually burn out the small motors in some vibrators during extended use. Non alkaline batteries supply enough power to operate the toy with less risk of burning out the products motor.

You also want to read a products packaging. Sometimes there will be a manufacturer suggested battery printed somewhere on the package.