The ST1511T has the power to slice through dense grass, gnarly weeds, and even 1-inch-thick Japanese knotweed without slowing down. All of the Ego trimmers we’ve tested have marathon-like run times, often outlasting the others by nearly 40% (and in most cases by more than 50%). It also has the easiest line-load system we’ve tested, as well as a telescoping shaft and quick handle adjustment, to accommodate people of all heights. Of all the trimmers we’ve tested, the Ego ST1511T Power+ String Trimmer with Powerload combines raw cutting power, finesse, handling, convenience, and run time in a way none of the others do. This model replaces our previous pick, the Ego ST1521S, which is almost identical except that it lacks the telescoping shaft and the easy handle adjustment. It wasn’t the lightest trimmer we tried, but its excellent balance and handle adjustments made it one of the simplest to swing around and maneuver in tight spots. There are a variety of systems that do this, but the Ego’s is the easiest we’ve tested. The Ego comes with a push-button line-load system, which eliminates the typically tedious process of putting new line on the spool head. It was also the most capable cordless trimmer we found, with enough run time to cut a 1-foot-wide strip of grass almost two-thirds of a mile long on a single battery charge. The Ego ST1511T is just as powerful and affordable as a gas tool, but without the messy fuel, smelly exhaust, or time-consuming maintenance. This allows it to work for a wide variety of heights and body types. This model, the latest in a long line of successful Ego trimmers, distinguishes itself with an easily adjustable telescoping shaft and a quick adjustment for the secondary handle. But it was the quietest tool we tested, with a hair-dryer-like hum that sounded more pleasant than the whine of its competitors. Considering all that power, you’d expect this trimmer to be noisy. This trimmer cut through 1-inch-thick Japanese knotweed as if it were grass, while the others pathetically slapped their strings against the thick stalks. Compared with other cordless trimmers, the Ego ST1511T Power+ String Trimmer with Powerload is on a different level.

Stihl hedge trimmers