High mobility is a prerequisite for effective work. It can be achieved with battery-powered tools without a direct connection to the power grid. Performance, reliability and safety are key aspects of using power tools. The fact that a tool is mobile should not be a hindrance to professional manual work, which means that a battery-powered hammer drill must be as reliable and efficient as a corresponding mains-powered tool. Professional users expect a lot from their tools. They subject their equipment to extreme loads and often operate it in tough conditions. ETC fits professional tools with suitable high-quality batteries. Our products are developed to meet top quality standards.