Bosch WC18CHF-102DDS 18V Wireless Charging Starter Kit Superior power - most powerful brushless compact drill driver in its class capable of performing the broadest range of heavy duty applications Durashield housing - designed and tested to withstand multiple 10 ft drops Flexible power system - compatible with every 18-Volt Lithium-Ion Bosch battery Charge wireless batteries any time and anywhere, without having to remove them from the tool - always be power ready Cool pack technology- advanced heat conductive housing keeps battery cooler and extends life