The first of it's kind, Ryobi brings you the Lithium-Ion Cordless Lawn and Garden line. With longer run time, fade-free power, and a Li-ion battery that works with all One+ tools, this is also the most eco-friendly option for your lawn care needs- while Nickel-Cadmium batteries contain potentially harmful components, the 18V Li-Ion does not. And best of all they'll work with any One+ tool you already own. And because all 4 of the Lithium-ion outdoor tools come with a Lithium-ion battery and charger, there's never been a better time to upgrade your One+ system, or start your One+ collection. If you want Performance, Versatility and Easy Operation, the One+ system has it all. The 18V Li-Ion string trimmer is lightweight and versatile. With a 12" cutting swath and a telescoping, rotating handle, you can adjust the height of trimmer and flip it over to convert to an edger.