Doc Johnson Batteries AAA 4 Pack Do not let the power fade just at that critical moment! Keep a supply of Doc Johnson's powerful AAA batteries on hand. These long-lasting 1.5 volt energy sources come two to a pack. For a wide range of accessories. You will need batteries for most vibrating sex toys. Why not get the best? Love dolls with vibrations, bullet vibrators, this is the most common battery. For all sex toys requiring this size of battery. 4 AAA battery 4-pack 1.5 volt batteries. 0% mercury 0% cadmium. Power packed for playtime. Doc Johnson Novelties.