The Einhell TE-CI 18 LI BL Power X-Change Cordless Impact Driver is a BARE UNIT and not supplied with battery or charger. Power X-Change is the rechargeable battery system from Einhell. It is designed for multi functionality. With this advanced technology, you can use 18V rechargeable batteries with different capacity ratings to power any of the Einhell Power X Change range. The Einhell TE-CI 18 LI BL Power X-Change Impact Driver has a brushless motor for increased performance and longer operating times than a conventional carbon brush motor. The finely adjustable electronic speed control can be precisely adjusted to your requirements for the material you wish to work on, so that neither the material nor the impact driver are over strained. For soft and delicate materials in particular, it allows work to be carried out with sensitive operation. It has a short, light-weight design that reduces body stress and fatigue, and the ergonomic soft grip surfaces provide a comfortable and firm