Bosch offers top-of-the-line cordless tools through it's Litheon Cordless Series.  Bosch Litheon  Cordless Tools are powered by the revolutionary Lithium-Ion battery, which carry more power, weigh less, and last longer compared to the traditional Nickel-Cadmium (NiCd) battery.  These cordless tools will feel just as powerful as if using a regular electrical tool but with the freedom and mobility that can only be made available without the nuisance of a cord.  Even among its industry, Bosch Litheon Cordless Tools are considered to be superior to many of its competitors who offer a similar series of lithium-ion powered cordless tools, according to many consumers and professionals accustomed to a variety of manufacturers.