Best Bump Feed Cordless String Trimmers (2026)

The Cat DG610 is the most complete bump feed trimmer here. It pairs a 60V brushless motor with a 15 inch dual-line head, and the maker says the second-generation brushless motor produces 40 percent more power and 10 percent more runtime than the first. A quick line load system shortens the part of bump feed that people dislike most, which is reloading the spool.

Bump feed on a dual-line head is the combination that suits tough work: two lines hit the grass in a single revolution, and thicker line survives on stones and fence posts. The head converts to an edger, which makes it more useful beside paths and beds. It is a heavier tool than the 40V Greenworks, so it suits a strong user and a larger lawn.

The platform is the 60V Cat system, so batteries do not fit other brands. Keep the head free of wrapped grass, check the line length before each session and store the battery indoors. If you want a quiet, no-gas replacement for a heavy trimmer, it is the most convincing option. Because the line load is faster than a conventional spool, the usual excuse for skipping a reload and finishing the job with half a spool disappears. Owners who trim every week will notice that more than any headline power figure.

This model keeps the bump head and adds a variable speed trigger, which is the feature that makes a corded or battery trimmer feel precise. Squeezing the trigger further raises line speed, so you can ease around plants and open up in open grass. The 15 inch dual-line head uses 0.085 inch line.

The TORQDRIVE system provides 30 percent more torque, according to the maker, which is a way of saying the gearing keeps the head turning when it meets thick stems. In practice the benefit is a trimmer that holds speed instead of bogging, and it is why a bump head with thick dual line is a good combination.

The 40V platform is the older, widely sold line, so extra batteries are common, and the kit includes a 2.0Ah pack and a charger. The pack is small for a 15 inch swath, so budget for a spare. Keep the head clear of wrapped grass, bump on soft ground and store the battery indoors. If you cut along a driveway edge, lift the head clear of the concrete before you tap, or advance the line on a patch of lawn. A trimmer that bumps on hard ground chews through a spool surprisingly fast and leaves a ragged line stub.

The widest swath in this guide, 16 inches, sits on the highest-voltage platform. A dual 0.080 inch line and bump feed head are paired with an 80V brushless motor, which the maker describes as delivering strong cutting power through tough grass and weeds.

The bump head is simple and robust, and it works with the dual-line system to chew through ditch growth. It is also an easy head to service, with no electronics to fail and spools that cost little. The tradeoff is the battery: a 2.0Ah pack on an 80V platform is modest, so a large property needs a spare.

The 80V packs fit the brand's mowers and blowers, which makes this the cheapest route for an 80V household. For a household without those tools, the 40V trimmer above is the better value. Keep the line at the correct length and clear the head of grass after use. Fit a second spool before the first one runs out, since an empty spool at the far end of a property is the commonest way a heavy trimmer ends a job early. Because the 80V pack is the biggest family, spares keep their value if you later switch tools.

This kit pairs a 13 inch dual-line bump feed trimmer with a blower rated at 540 CFM and up to 140 mph, both on one 60V platform with a 4.0Ah battery. The 0.080 inch dual line cuts well, and the blower clears clippings off hard surfaces in a minute.

The swath is narrower than the Cat or the 80V, which makes the tool easier to handle, and the 4.0Ah pack is the largest included in this guide. For a typical suburban lot, that pack is enough to trim and blow in one session.

The tradeoff is that you buy the pair, so the cost is higher than a single trimmer. If you only need a trimmer, buy the 40V Greenworks. If you need both, one battery for two tools is a sensible deal. Clean the blower intake, tap the trimmer head on soft ground and store the pack indoors. A larger pack also helps the blower, which draws far more current than the trimmer does. Do the trimming first, then blow, so the battery is strongest when the trimmer needs the torque.