Ryobi's flagship 40V HP Brushless string trimmer in the Whisper Series gives you the closest cordless approximation to a 30cc gas trimmer most homeowners will find under $300. Pro Tool Reviews scored it 9.4/10 and called out over an hour of runtime on the 6.0Ah pack. The trade-off is size — at 72 inches and nearly 13 lb with battery, it's a commitment — but for buyers who want adjustable 15-to-17-inch cut width and the ability to drop in 0.105-inch line for tougher growth, the Ryobi is the sharpest mid-tier value in the cordless segment.
Full review
Cutting Power and Real-World Use
Ryobi pitches the RY402110 as a true gas replacement, and Pro Tool Reviews backed that claim, reporting power equivalent to a 27cc engine in their cutting tests. OPE Reviews echoed this, noting the trimmer cuts confidently even at low speed and handles dense patches of St. Augustine grass without hesitation. The brushless motor in the 40V HP line is the same architecture Ryobi uses in their professional lineup.
The killer feature for mid-tier buyers is the adjustable cutting width: a thumb-actuated stop lets you switch between 15 and 17 inches of swath depending on the terrain. Narrower for precision around landscaping, wider for fast cleanup along property lines. The head accepts both 0.095-inch line for clean lawn cuts and 0.105-inch line for heavier weeds, giving you a noticeable performance bump without buying a different tool.
Variable-speed trigger control lets you ease into delicate areas around mulch beds without overshooting and shredding ornamentals, then ramp to full throttle for the open lawn stretches. The dual-speed switch lets you cap maximum speed for thinner line work to save battery.
Battery Life and Runtime
Pro Tool Reviews logged 67 minutes of continuous trimming on the included 6.0Ah battery with 0.095-inch line at standard speed — actual real-world cutting time, not idle. OPE Reviews independently confirmed over an hour, posting 1 hour 5.5 minutes during their baseline test. That puts the Ryobi at or above every other cordless trimmer in this category for raw runtime per charge.
Switching to 0.105-inch line for heavier weed work pulls runtime down noticeably — Pro Tool Reviews noted the higher line draw cuts it closer to 45 minutes. The 40V HP battery is shared across more than 75 Ryobi outdoor tools, so the platform investment pays off if you already own a Ryobi mower, blower, or hedge trimmer.
Charge time on the 6.0Ah pack runs about 130 minutes with the standard charger; Ryobi sells a rapid charger that cuts this nearly in half. For typical homeowner weekly trimming the standard charger is fine since the battery sits on the charger between uses.
Build Quality and Materials
The shaft is genuine carbon fiber, not the glass-filled polymer some competitors call carbon. That keeps the bare tool under 9 lb and absorbs vibration noticeably better than aluminum. Pro Tool Reviews and OPE Reviews both praised the build as a real step up from prior Ryobi 40V generations, with no flex in the shaft under cutting load. The lower drive housing where the shaft mates to the head is metal-reinforced.
The REEL EASY+ 3-in-1 head is mostly metal where it matters (the spool drive and bump knob), and Ryobi's purported 60-second line reload time is roughly accurate for experienced users. Five-year tool warranty and three-year battery warranty are competitive at this price. The trigger assembly uses a variable-speed potentiometer rather than a 2-position switch, giving smoother power modulation around delicate landscaping.
Weight and Ergonomics
Bare tool weight is around 8.8 lb, climbing to 12.9 lb with the 6.0Ah battery clipped on. That's heavy enough that Pro Tool Reviews specifically flagged extended-use comfort as a consideration, noting roughly 10 lb of the working weight concentrates in the head end. A shoulder strap (sold separately) makes a real difference.
Overall length tops 72 inches without battery, which is good for tall users but unwieldy for anyone under about 5'6". The auxiliary D-handle slides for fit adjustment, but it can't fully compensate for the long shaft on shorter operators. Buyers under 5'5" should specifically demo the tool before committing.
Noise and Whisper Series
Ryobi specifically tuned this trimmer as part of the Whisper Series, claiming 72% quieter operation than equivalent gas trimmers. Pro Tool Reviews and OPE Reviews both confirmed it's noticeably quieter than the Husqvarna 525L gas pick in this list, though louder than the EGO ST1623T's brushless motor due to the larger cutting head's air noise. The bare-tool measurement at the operator's ear sits around 78-82 dB, roughly half the perceived loudness of a 25cc 2-stroke at the same distance.
For HOA-restricted properties or close-neighbor situations, the Ryobi's combination of cordless power and acceptable noise makes it work where a gas trimmer wouldn't. The lower vibration also extends comfortable session length compared to a 2-stroke — brushless cordless trimmers don't produce the cyclic engine pulse that fatigues forearms after 20-30 minutes of gas trimming.
Where It Falls Short
Length and weight are the real trade-offs. At 72+ inches and nearly 13 lb working weight, this is not a casual pickup-and-trim tool. Shorter users and anyone with shoulder issues should look at the smaller 15-inch Ryobi 40V (RY40290) instead, which trades cutting width for handling.
The kit price hovers near $299 once you include the 6.0Ah battery, putting it within range of the EGO ST1623T's $329. If you don't already own Ryobi 40V tools, the EGO's POWERLOAD spool and Line IQ auto-feed are real ergonomic wins for the extra $30. The Ryobi makes more sense as a mid-tier value pick for someone already on the 40V HP platform.
The REEL EASY+ bump-feed head, while serviceable, is also fussier than the EGO's POWERLOAD when it comes time to reload. Owners report needing 2-3 spool reloads before the technique becomes automatic, and the wear-knob can be a sticking point — Ryobi sells the head as a swappable assembly if it ever stops bumping correctly.
Who It's Best For
Homeowners with half an acre to two acres who want gas-class cutting throughput without the noise and maintenance. Ryobi 40V HP platform owners get a clear add-on value here. The adjustable 15-17 inch cutting width and dual line diameter compatibility make it more flexible than the EGO for buyers who anticipate a mix of clean lawn trimming and overgrown brush work.
Skip it if you have a small flat suburban lot (Worx WG170 will satisfy at one-third the price), if you're under 5'5" tall (the long shaft will fight you), or if you already own EGO 56V tools (the EGO ST1623T's ecosystem advantage outweighs Ryobi's flexibility).
How It Compares to Alternatives
Pro Tool Reviews' best-string-trimmer roundup called the Ryobi RY402110 the homeowner-pick for delivering the highest power in residential cordless. Their battery shootout scored it 90/100 — higher than the EGO's 86. The EGO's win on convenience comes from POWERLOAD and Line IQ, not raw output.
Against the Husqvarna 525L gas pick, the Ryobi's runtime caps your work session and the head still draws less peak power on the heaviest weeds. For most suburban use cases that's fine, but if your lot includes pasture edges or annual ditch-clearing, the gas Husqvarna still wins.
Long-Term Durability and Platform
Ryobi's 40V HP platform now spans more than 75 tools — mowers, blowers, hedge trimmers, chainsaws, snow throwers — which makes the battery investment go further than the trimmer alone. The 6.0Ah pack in this kit weighs about 4 lb and the same pack runs a Ryobi 40V mower for roughly an hour, so platform owners aren't stuck with single-purpose batteries.
The Whisper Series tuning is partly mechanical (acoustic dampening around the motor housing) and partly software (gentler ramp profiles on the variable-speed trigger). Long-term reports from Home Depot reviewers and OPE Reviews suggest the carbon-fiber shaft is genuinely durable — no reports of cracking or delamination at the head joint after multiple seasons of use. The REEL EASY+ head is mostly metal and wears in linear fashion: expect to replace the bump knob assembly after 2-3 years of weekly use.
Strengths
- +Brushless motor delivers gas-equivalent power roughly matching a 30cc 2-stroke
- +Cutting width adjustable from 15 to 17 inches for fast cleanup of large lots
- +Carbon-fiber shaft keeps total weight under 13 lb with the 6.0Ah battery
- +Runtime exceeds 1 hour at standard speed on the included 6.0Ah pack
- +Whisper Series tuning rates 72% quieter than equivalent gas trimmers
Watch-outs
- −Bare tool weight is still close to 9 lb, heavier than smaller-class cordless
- −72-inch overall length can be unwieldy for shorter users
- −Higher line draw with the 0.105-inch line option shortens runtime noticeably
How it compares
Slightly outpowers the EGO ST1623T on raw cutting throughput thanks to the 0.105-inch line option, but loses the auto-feed and POWERLOAD spool ease. Far more capable than the Worx WG170 GT Revolution on large or weedy lots, with three times the runtime and a real metal-bodied head.
Who this is for
At a glance: Homeowners with half an acre to two acres who want gas-class cutting and don't already own an EGO battery platform.
Why you’d buy the Ryobi RY402110 40V HP Brushless 17-Inch Carbon Fiber
- Brushless motor delivers gas-equivalent power roughly matching a 30cc 2-stroke.
- Cutting width adjustable from 15 to 17 inches for fast cleanup of large lots.
- Carbon-fiber shaft keeps total weight under 13 lb with the 6.0Ah battery.
Why you’d skip it
- Bare tool weight is still close to 9 lb, heavier than smaller-class cordless.
- 72-inch overall length can be unwieldy for shorter users.
- Higher line draw with the 0.105-inch line option shortens runtime noticeably.
Rating sources
“Carbon fiber is an excellent material for any tool with a shaft.”
“This trimmer even cuts confidently at Low speed and handles dense patches of St. Augustine without any noticeable hesitation.”
“Delivers more power than a 30cc gas string trimmer.”
Our 4.4 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
