8 Best String Trimmer of 2026: Power and Runtime That Match Your Lawn Size

The 40V motor on the LST136 cuts through thick weeds and overgrown grass without bogging down, while the telescopic shaft adjusts to fit taller users and the 7.8 lb weight keeps fatigue in check during a full trim session. The 2.0Ah battery provides the advertised 45 minutes of runtime on moderate trimming, which is enough to edge and trim most quarter- to half-acre lots on a single charge.

Switching from trimmer to edger requires no tools — a simple rotation of the head locks into place, and the wheeled guide makes curb edging predictable. The battery recharges in under two hours with the included fast charger, so you can finish a second pass after a short break.

This trimmer is built for homeowners with standard suburban lots who need more power than entry-level 20V models but want to avoid the weight and cost of premium 60V systems. The auto-feed can be finicky in tall grass, and heavy use over multiple seasons may reveal durability limits in the motor or string head — something to consider if you push equipment past light residential duty.

At its price point, the LST136 offers a step up in cutting power compared to lighter cordless trimmers without the stretch to a gas-like 60V platform. For someone committed to the BLACK+DECKER 40V battery line, this trimmer becomes a logical addition to the ecosystem.

The BLACK+DECKER BESTA510 delivers a 6.5-amp motor in a 6.3-pound package — more cutting force than many cordless trimmers at a fraction of the price. Its 14-inch cutting width handles thick grass and weeds typical of a small yard, and the corded design means you never have to wait for a battery charge.

This trimmer suits homeowners with a modest lawn within reach of an outdoor power outlet. The automatic feed spool reduces the need to manually bump the head, but it can occasionally jam or overfeed — keeping a spare line spool on hand is practical. Line breakage is more frequent than with thicker aftermarket line, so replacing the string with a heavier gauge is a common adjustment.

On typical grass, the motor maintains speed without bogging down, even in heavy patches. The 2-in-1 conversion to edging is straightforward, no tools required, and the lightweight build makes maneuvering around flower beds and fences easy. A simple loop hook on the handle prevents the cord from dragging through wet grass.

At 4.2 pounds with an auto-feed that starts the moment you power on, this WORX weighs less than a gallon of milk and requires no bumping to advance line. That combination makes it the most accessible trimmer for anyone who finds heavier tools tiring or awkward to handle.

The tradeoff is plainly visible: a 10-inch cut width and a battery that delivers roughly 10 minutes of runtime. That suits a very small patio, a few garden beds, or the edges of a postage-stamp lawn — but it won't finish a suburban yard on one charge. Elderly users, first-time buyers on a tight budget, or anyone with limited physical strength will find the low weight a genuine advantage, provided they accept the short work window.

For reference, the two-battery model in this lineup costs more but offers double the runtime and a 12-inch cut. The WORX stays competitive at a lower entry price and simpler operation — no button presses or line adjustments mid-job.

The EGO ST1623T matches gas trimmers in cutting power and offers 60 minutes of runtime from a single 4.0Ah battery, with a telescopic carbon fiber shaft that adjusts for reach.

The Powerload system automatically winds new line in seconds, eliminating manual spooling – a time-saver for frequent trimming sessions.

This trimmer suits owners of large properties (half an acre or more) who want consistent power without gas engine maintenance. The 7.5 lbs weight and premium price make it less ideal for smaller yards or budget-minded buyers.

The WG163's push-button feed eliminates the need to bump the head on the ground, and switching from trimming to edging is a simple pivot of the shaft. At 5.5 pounds, it's among the lightest trimmers that still include two batteries, making it comfortable for extended use around flower beds and fences.

This trimmer fits small to medium residential lawns where every pound and minute count. The battery life from each 2.0Ah pack is modest—finishing a typical quarter-acre yard will likely require swapping to the second battery. String feed can be inconsistent with older or cheap line, so using quality .065-inch trimmer line helps maintain steady cutting.

The 12-inch cutting width means more passes than wider 15-inch models, but the reduced weight makes each pass quicker to swing. For first-time cordless buyers or anyone tired of dragging a cord, this WORX offers a low-commitment entry point with enough accessories to handle routine edging and light trimming without frustration.

The DEWALT 60V trimmer delivers gas-like cutting power and works with universal attachments, making it effective on heavy weeds and versatile for edging or brush cutting. Battery life runs up to an hour on a charge, and the 60V FlexVolt battery also powers 20V DeWalt tools. However, at 15 pounds, the trimmer is heavy enough to cause arm fatigue during extended use, and the string head may require occasional adjustment or replacement of line more often than expected. Priced at a premium, this model suits property owners who already own DeWalt batteries or need attachment capability — for standard suburban lawns, it is overbuilt and heavier than necessary.

The Greenworks 40V 12-inch trimmer delivers solid cutting power for a cordless model — enough to handle thick grass and light weeds without bogging down. Assembly takes minutes, and the dual auto-feed line keeps you working without manual bumps. Where it falls short is runtime: the included 2Ah battery is fine for a small yard but may need a spare for anything larger. The 12-pound weight concentrates some heft at the cutting head, which can feel unbalanced during longer sessions. This makes more sense as a starter unit or an addition to an existing Greenworks battery collection than as a primary trimmer for medium lawns.