From the well-known screwdriver to the jigsaw to the lawn mower, many devices are now available as a cordless, battery version. The advantages are obvious: Working is easier because of the independence of socket and cable reels, with a cordless device you are fully mobile. Everybody who owns a wide range of battery devices for workshop and garden had to accept so far that there is the disadvantage of having a hodgepodge of various batteries and chargers. Thanks to Power X-Change this is now a thing of the past. With this cross-product battery system from Einhell it is possible to operate a variety of devices up to 36 V with the same battery. That protects both, the wallet and the environment.