The most consumable part of a projector is the projector lamp. When the projector doesn't work, at most cases it is due to the malfunction of the lamp. Actually, components in the projector other than lamp seldom go wrong. If you are satisfied with the brightness and image quality of the projector you are using, it is always good to replace the lamp. Battery Technology can offer you a wide selection of compatible projector lamps that have the same quality as the original lamp under a more "reasonable" and fairer price.