Recent breakthroughs in nanotechnology have improved the power density and charge/discharge rates for lithium-ion cells, thus opening up applications requiring high power density and high charge/discharge rates. This is, of course, in addition to the traditional battery capacities used in portable entertainment and portable computing applications. The high-power cells are ideal for use in power tools and other motor-driving applications, and deliver the lithium-ion advantages and the low environmental impact (most types qualify for disposal in the regular refuse stream).