No battery

— most modern cordless tools are supplied without batteries. This configuration assumes that the user will purchase additional batteries at his own discretion (many models are compatible with several brands of batteries at once). In addition, this option may be useful if you already have a battery at home. This happens quite often, since many well-known manufacturers use universal batteries suitable for different types of branded power tools. So, for example, a battery from a previously purchased jigsaw or grinder may well be compatible with a screwdriver from the same company.