I have a Ryobi cordless that I purchased last year. I can't recall the voltage, but it was the highest voltage available in the Ryobi line at the time. It's nice not to have to deal with gasoline, or the occasional irritation of starting a gas-powered model, but there is no free lunch. It uses the thinnest line available for trimmers (.065? It's blue in color) and unlike most gas-powered trimmers which have two cutting lines coming out of the spool, this one has just one line coming out. Makes felling a redwood tree a bit tedious, and if you are trimming up against something abrasive, such as a stone or brick wall, you will eat through this thin line quickly.

For small trimming jobs, it should work just fine, but it is not up to the heaviest jobs that a gas model could handle.