In some extreme circumstances, only a gas tool will do—and we have a gas-powered pick for those. But those rarely apply to most people’s needs, so the rest of this section outlines our criteria for cordless string trimmers. 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. It also greenworks pro 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. 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%). The ST1511T has the power to slice through dense grass, gnarly weeds, and even 1-inch-thick Japanese knotweed without slowing down.
These adjustments make it easier to share the trimmer among members of a household. Most of these trimmers use big batteries, and they can take a while to fill up. Because it’s entirely possible for the battery to empty sun joe lawn mower out during use, we wanted a tool with the shortest possible charge time, minimizing downtime. If you have only minimal trimming needs, we like the Worx WG170.2 GT Revolution 20V PowerShare String Trimmer and Edger.
If you do get stranded with an empty battery, the Ego’s charger can deliver a full battery in about 40 minutes. If you’d rather have the assurance of a second battery (though we don’t think it’s necessary), additional ones are available, ranging from about $150 to $400, depending on ampere hours. Looking at this, it’s only at $20 difference and normally I would just get the slightly fancier version. But there’s also a combo pack that comes with a leaf blower (for $270 total). However, the combo only comes with the “rapid reload” head, there’s no option to mix & match.
The trimmer is compatible with all EGO ARC Lithium™ batteries to maximize the convenience of the cordless system and deliver the power you need. EGO spent years perfecting its POWERLOAD technology to deliver the power, cut quality, and runtimes of premium gas string trimmers without the frustration of loading string into the head. Patented POWERLOAD technology is a breakthrough for battery-powered outdoor power equipment.
Get over 60-minutes of continuous cut timewhen used with the included EGO 56V 4.0Ah ARC Lithium™ battery. Patented POWERLOAD technology automatically winds your trimmer line. A carbon fiber shaft makes it the strongest string trimmer on the market