Bosch's NiCd Cordless Tools allows professionals and users the convenience of cordless power tools which are still powerful enough even without a cord to get the job done.  Cordless tools powered by a nickel-cadmium (NiCd) battery have been trusted for years by those who use them.  The batteries are rechargeable and are ideal when jobsite restrictions or limitations make going cordless a much more practical means to getting the job finished, even where heavy-duty power tools are needed.  You may also want to check out Bosch's Litheon Cordless Tools, which are cordless tools powered by the newer lithium ion battery.