EGO Power+ LB6504 and Ryobi's 40V HP Brushless Whisper Series both promise strong cordless clearing power without gas, cords, or fumes. The real trade-off is raw output versus portability. The Ryobi ships with two batteries, more airflow, more air speed, and a quieter Whisper Series motor, while the EGO stays noticeably lighter and more compact for buyers who carry a blower one-handed for long stretches.
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Buy the Ryobi 40V HP Brushless Whisper Series unless you want the lightest, most compact blower for one-handed carrying -- then the EGO Power+ LB6504 earns its keep.
Both blowers use brushless motors, a variable-speed trigger, and a dedicated turbo button for maximum output. The Ryobi 40V HP Brushless Whisper Series pulls ahead for most buyers because it moves more air (730 CFM versus 650 CFM) at a higher top speed (190 MPH versus 180 MPH), runs quieter at a rated 57 dB against EGO's 64 dB, and ships with two 4.0 Ah batteries plus a rapid charger instead of one, so you are not stuck waiting on a recharge mid-yard.
EGO Power+ LB6504 is still the right call if a lighter, more compact tool matters more than raw output. Its bare-tool weight of about 4.77 lbs beats the Ryobi's 6.4 lbs, which is noticeable during long one-handed sweeps, and its 56V battery slots into an existing EGO 56V tool lineup rather than starting a new 40V ecosystem. The trade-off is less airflow, a louder motor, and only one battery in the box.
The LB6504 is the cleaner pick for shoppers who already own EGO 56V tools or want the lightest blower to carry for long stretches.
The RY404100 is the better all-around pick if you want more airflow, a quieter motor, and two batteries included in the base kit.
The right pick depends less on brand loyalty and more on whether you value maximum airflow and runtime, or the lightest possible tool to carry for a long stretch of yard work.
You already own EGO 56V tools and want to share one battery ecosystem, or you prioritize a lighter, more compact blower for long one-handed sweeps around a smaller yard or patio.
Skip it if you have a big yard with wet leaves or heavy debris -- 650 CFM and a single battery will run out of both power and runtime faster than the Ryobi kit.
You want more airflow and top speed for heavier debris, a quieter motor for early mornings or close neighbors, and two batteries so you are not stuck recharging mid-job.
Skip it if the extra 1.6 lbs of bare-tool weight matters more to you than raw power, or you are already invested in EGO's 56V tool lineup.
The important split is not brand loyalty. It is whether you want the Ryobi's stronger airflow and two-battery kit, or the EGO's lighter, more compact single-battery build.
| Metric | EGO Power+ LB6504 | Ryobi 40V HP Brushless Whisper Series |
|---|---|---|
| Best fit | Shoppers who want the lightest tool and already use EGO's 56V battery ecosystem. | WinnerBuyers who want more power, a quieter motor, and two batteries for extended runtime. |
| Model | EGO Power+ 650 CFM Blower (LB6504) | Ryobi 40V HP Brushless Whisper Series (RY404100) |
| Airflow (CFM) | 650 CFM | 730 CFM |
| Air speed (MPH) | Up to 180 MPH with tapered nozzle | Up to 190 MPH with included speed tip |
| Noise level | 64 dB | 57 dB |
| Battery system | 56V ARC Lithium, one 5.0Ah battery and 210W charger included | 40V, two 4.0Ah batteries and a rapid charger included |
| Weight | About 4.77 lbs bare tool, about 9.7 lbs with battery attached | About 6.4 lbs bare tool, about 9.7 lbs with one battery attached |
| Main drawback | Less airflow, louder motor, and only one battery in the box. | Heavier bare-tool weight and a longer body with the flexible nozzle attached. |
We compared the blowers on airflow, air speed, noise level, battery count and voltage system, and bare-tool and ready-to-use weight. We omitted ratings, review counts, prices, and availability because those details change often and can mislead shoppers when they are stale.
For the EGO LB6504, we used EGO's official product page for CFM, MPH, noise level, and included accessories, plus published bare-tool and battery-attached weights. For the Ryobi RY404100, we used Ryobi's own product page and manufacturer specification sheet for CFM, MPH, noise level, weight, and included batteries and charger.
We weighted fit by the job each buyer is really hiring the blower to do: maximum airflow and runtime for bigger yards and heavier debris, or a lighter, more compact tool for buyers who carry a blower one-handed for long stretches or already own EGO's 56V tools.
The Ryobi is the safer default for most buyers because more airflow, a quieter motor, and two included batteries matter on nearly every job, while the weight gap only shows up over long carrying stretches. The EGO is easier to justify when a lighter tool or an existing 56V battery investment matters more than raw output.
Best fit if you want the lightest tool and already use EGO's 56V battery ecosystem.
Sources: EGO product page and retailer listing.
Best fit if airflow, noise level, and battery life matter more to you than shaving bare-tool weight.
Sources: Ryobi product page and retailer listing.
The Ryobi 40V HP Brushless Whisper Series moves more air. Ryobi's own spec sheet lists 730 CFM and 190 MPH with the included speed tip, versus EGO's published 650 CFM and 180 MPH with its tapered nozzle attached for the LB6504. That gap shows up most on wet leaves and packed grass clippings.
The Ryobi is quieter. Ryobi rates the RY404100 at 57 dB as part of its Whisper Series line, while EGO's published spec for the LB6504 is 64 dB. That is a meaningful difference for anyone blowing leaves near neighbors or early in the morning.
The Ryobi kit (RY404100) ships with two 40V 4.0 Ah batteries and a rapid charger, giving roughly 2 hours of combined runtime per Ryobi's spec sheet. The EGO LB6504 ships with one 56V 5.0Ah battery and a 210W charger, rated for up to 90 minutes of runtime on its own.
The EGO LB6504 is lighter as a bare tool at about 4.77 lbs versus the Ryobi's 6.4 lbs bare, per each brand's published specs. Once a battery is attached both land close to 9.7 lbs, but the EGO's lighter frame is easier to hold one-handed for long stretches.
Yes. Both use a variable-speed trigger plus a dedicated turbo button for maximum output, and the Ryobi additionally includes a cruise control feature that lets you lock in a speed without holding the trigger down, which the EGO LB6504 does not offer.
Not with each other. EGO's 56V ARC Lithium battery is compatible with EGO's own lineup of 100-plus tools, and Ryobi's 40V battery works across Ryobi's 40V outdoor power equipment line of 75-plus tools. Pick based on which battery ecosystem you already own or plan to build into, since the packs are not cross-compatible.
It is the stronger buy for most yard-cleanup jobs: more airflow and air speed, a quieter 57 dB Whisper Series motor, and two 40V 4.0 Ah batteries included instead of one, for real back-to-back runtime without a mid-job recharge.
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