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 Power-X-Change Brushless Twin Pack, contains the following: 1 x 18 Volt TE-CD 18LI-I BL Power X-Change Hammer Drill, with a brushless motor for increased performance and longer operating times. The impact mechanism provides the power needed to penetrate hard, brittle material. Fitted with a robust, long-lasting 2-speed metal gear making it ideal for heavy-duty drilling jobs. Its ergonomic, soft grip design and additional handle provide comfortable operation. 18 Volt TE-CI 18 LI BL Power X-Change Impact Driver, with a .