Here is a Golden Age rendering of the Batcave by 1940s Batman artist Dick Sprang. Some of the classic mainstays: the giant penny, the mechanical T-Rex, array of Batmobiles, Batcomputer (note the ticker tape instead of monitors), crime lab and trophy room.
And below is a more modern take on the cave from All-star Batman and Robin. Note the addition of the the armor museum.
Despite his prowess at fighting common street thugs, Batman has never been shown to use anything but the most advanced in crime fighting technology. Universally regarded as one of the most intelligent characters in his world, it has often been said that his superpower is his mind.
Here we see the Batcave, an integral part of the Batman myth, complete with state of the art computer, indefatigable butler, high ceilings and poor lighting.