Sealed Ni-Cd cells were at one time widely used in portable power tools, photography equipment, flashlights, emergency lighting, hobby R/C, and portable electronic devices. The superior capacity of Nickel-metal hydride batteries, and recent lower cost, has largely supplanted Ni-Cd use. Further, the environmental impact of the disposal of the toxic metal cadmium has contributed considerably to the reduction in their use. Within the European Union, Ni-Cd batteries can now only be supplied for replacement purposes or for certain types of new equipment such as medical devices.