Gas motors can be very heavy; for example, Ryobi says its $269 4-Stroke 30cc Gas Trimmer weighs 12.25 pounds while the 40V Brushless 16-inch Cordless String Trimmer weighs 8.4 pounds.

Ryobi's gas-powered trimmers, like the RY34540 4-Cycle model, offer great cutting power, making them a perfect choice for tall grass and weeds.Unlike electric versions, they don't rely on battery ...

“Electric trimmers really rival gas in cutting performance,” says David Trezza, who oversees string trimmer testing for Consumer Reports. In fact, more than 90 percent of the battery string ...