Greenworks BPB40L820 40V 710 CFM backpack blower kit with two 8.0 Ah batteries review

A two-battery backpack package with a real carrying tradeoff

Greenworks identifies the BPB40L820 as the 40V dual-port backpack blower sold under SKU 2428502. This exact kit includes two 8.0 Ah batteries, a charger and the blower. The package is more specific than the model name alone: a similarly named 40V backpack version can be sold with smaller batteries, so check the SKU and the included-pack line rather than assuming that every 710-CFM Greenworks backpack bundle is the same purchase.

The 8.0 Ah packs give this kit a notably large included battery supply, but Greenworks does not publish a runtime for this exact setup in the reviewed page or manual. Battery capacity is not a timed yard-clearing result. Do not turn the two-pack count into a promised number of minutes, and do not assume both packs can be fully recharged at once: the exact page gives a 60-minute charge-time claim but does not say whether that time applies per battery or to the pair. It names a charger in the box but does not identify the charger model there.

Published output and controls

The exact product listing and its linked operator manual agree on up to 710 CFM and 175 mph. Those are manufacturer maximums, not a guarantee of how quickly a particular leaf pile will move. Volume is relevant when you need to sweep a wide path; air speed can help explain the concentrated stream, but surface, moisture, nozzle position and technique still matter. Use the lower trigger range to guide debris instead of scattering it, then reserve the Turbo button for moments when the extra force is worth the battery drain. The manual explicitly warns that Turbo depletes the battery fastest.

This is a backpack layout, not a handheld body with a shoulder strap. The tool has a variable trigger, cruise-control lever, Turbo boost button, adjustable harness and dual-port battery compartment. Cruise control can hold a selected speed while the operator guides the tube, which may be useful on longer paths; the trigger remains available to adjust or stop. The manual describes fitting and adjusting the harness and chest strap, but it does not establish that this particular fit will be comfortable for every operator.

Weight deserves equal billing with airflow. Greenworks lists 10.7 lb as tool-only weight, while its product description gives 26.8 lb with batteries. The manual's technical table lists 10.69 lb without battery and charger, which is consistent with the rounded tool-only figure. For someone who has a strict carried-weight ceiling, the 26.8-lb with-battery number is the more relevant listing. It is a substantial load to wear and maneuver; a high CFM figure does not make the harness mass disappear. If you only clear a short walkway or want something to lift repeatedly from a shelf, compare a handheld design before choosing this form factor.

What this exact kit does—and does not—include

The 2428502 package is blower-only. It is not a leaf vacuum or mulcher, has no collection bag, and is not a trimmer-and-blower combo. Greenworks' specification field says nozzle attachments are not included; the manual shows the front and rear blower tubes used to assemble the tool, but neither source establishes a set of interchangeable add-on nozzles in the box. Choose another configuration if collection, a particular attachment or a multipurpose yard kit is essential.

The 40V battery platform can be useful if you already own compatible Greenworks 40V tools, but voltage branding by itself is not enough to establish that every pack, charger or accessory is interchangeable. The operator manual lists BAF749 and other BAF-series batteries and CAF822 and other CAF-series chargers. Confirm the label and instructions for the exact pack and charger you plan to use. The package's two 8.0 Ah batteries and charger are stated for SKU 2428502; do not transfer that kit list to a tool-only listing or a different battery package.

Who should shortlist it?

This model is a reasonable candidate when you want a battery-powered backpack blower, need a published airflow ceiling of at least 710 CFM, value having two large batteries included, and can manage the listed 26.8-lb weight with batteries. Its control layout is better suited to a deliberate, extended clearing routine than to a quick one-handed cleanup. The manual marks it for household use, and its three-year limited warranty is for the original purchaser with proof of purchase and personal use; it excludes units bought or rented for industrial or commercial use. That warranty language matters if your work is paid or commercial.

For a higher published airflow ceiling in a handheld format, compare the Greenworks BL80L414, whose separate 80V listing describes a 770-CFM handheld kit. That is not a like-for-like battery-platform or carrying-style swap. If backpack carrying matters more than maximizing the package battery capacity, the reviewed BPB60L512 is a different 60V configuration; its one-pack kit has lower published airflow and unresolved page/manual speed differences. These alternatives show why the best choice turns on body style, kit contents and evidence you actually need—not just the largest number on a listing.

Bottom line: BPB40L820 / SKU 2428502 combines a 40V dual-port backpack blower, two 8.0 Ah packs and a charger, with consistent 710-CFM / 175-mph manual and product-page claims. The package's load is heavy at the manufacturer's stated 26.8 lb with batteries, no runtime is established, and the included charger model and two-pack charging basis are unspecified. Buy it only if the extra battery capacity is worth carrying and you do not need leaf collection or a separate accessory nozzle. Greenworks instructs users to wear eye and hearing protection, avoid rain and wet surfaces, keep bystanders at least 50 feet away, and remove the battery before maintenance; those are practical operating conditions, not fine print to skip.

Primary sources: Greenworks' BPB40L820 / SKU 2428502 product page, its page-linked 40V backpack-blower operator manual, and the Greenworks support-hub page 2 listing.