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-CD 18Li-I BL Power X-Change Hammer Drill has a brushless motor for increased performance and longer operating times than a conventional carbon brush motor. With the brushless cordless impact drill/driver there is no wear from mechanical abrasion. Its impact drill action helps the user deal with jobs involving stubborn materials; the impact mechanism provides the power needed to penetrate hard, brittle material such as stone or concrete when drilling. The robust, long-lasting 2-speed metal gear unit is supplied by a high-performance Power X-Change system battery pack and has ample power reserves for even heavy-duty drilling jobs. For powerful driving and fast drilling, the cordless impact drill/driver also has two-speed