The Gardena Battery System 18V is part of the Gardena Battery System. Batteries within this platform are interchangeable. The big advantage of this is that you don't need a new battery when you buy a new product. If the new garden tool is part of the same battery platform as the battery that you already have at home and has the same voltage, you can simply use this battery for your new garden tool. You'll be able to use the same battery for your hedge trimmer, string trimmer, or leaf blower.