Black+Decker LSW321 - 20V 100 CFM Cordless Blower
The Black+Decker LSW321 is a lightweight cordless handheld leaf blower delivering 100 CFM at 130 MPH. It features a 2 Ah 20 V Li-ion battery. (Read full specs)
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Features and Specifications
Type | Cordless |
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Handling | Handheld |
CFM | Up to 100 |
MPH | Up to 130 |
Blowing Force | N/A |
Brushless | No |
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Voltage | 20 V |
Speed settings | 1 |
Battery | Li-ion |
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Autonomy | 25 mins |
Vacuum | No |
Battery included | 1 |
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Weight (w/ battery) | 3.7 lbs |
Weight (tool only) | 2.8 lbs |
Noise rating | 54 dB |
Warranty | 2 years |
We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it. For full technical details on the Black+Decker LSW321, the user manual is available here (opens in a new tab).
Description
When leaves and grass clippings start to pile up, this sweeper with POWERBOOST clears even stubborn debris from driveways, sidewalks, decks and all your hard surfaces. With up to 25 minutes of runtime, this quiet sweeper gets it all done.
Overview of the Black+Decker LSW321
- Power: This cordless leaf blower has a maximum air volume rating of 100 cubic feet per minute (CFM) and an air speed rating of 130 MPH.
- Power delivery: Those who don’t want to fuss with cords will be glad to know that this blower is battery-operated.
- Battery: With its 2 Ah 20 V Li-ion battery (1 LBXR2020 battery combo included), the Black+Decker LSW321 has a standard, full-charge run time of up to 25 minutes.
- Handling: Designed to be handheld, this blower offers excellent maneuverability, making it effortless to carry and use for short periods. When compared to other cordless handheld blowers, the Black+Decker LSW321 stands out due to its lower weight: just 3.7 lbs battery included.
- Speed Settings: The LSW321 by Black+Decker has just one speed setting.
- Noise: At 54 dB, the noise produced by the LSW321 is in line with what you'd expect from other electric handheld blowers.
Product Videos
The Black+Decker LSW321's performance versus other blowers
The following charts are provided to give you an idea how the key specs of the Black+Decker LSW321 compare with handheld leaf blowers of similar voltage (between 18 and 24V).
- Exiting the nozzle, the air can reach speeds of up to 130 MPH, showcasing impressive velocity for a battery-operated handheld blower. If you wish to benefit from air expelled at the fastest possible speed, the Makita XBU07SM1 and its 143 MPH could be an option to consider.
- Its airflow capacity, rated at 100 CFM (cubic feet per minute), positions it at the lower spectrum among cordless handheld blowers. For the highest air volume, you may want to have a look at the RIDGID R01601K, which boasts with 510 CFM.
- The autonomy of the LSW321 aligns with the industry standard for cordless handheld units in the 18V to 24V range, offering up to 25 minutes of operation when fully charged. If autonomy is an important factor for you, the Ryobi PBLLB01K can run for up to 60 minutes and could be worth considering.
Here's a list of the most popular specific comparisons:
Price comparison
As you can see from these interactive charts, when compared to other cordless blowers, the Black+Decker LSW321 is on the average side of the price range.
Therefore, this blower nicely fits in the expected budget for this kind of product.
POWERBOOST Technology

POWERBOOST is one of the features of the POWERCOMMAND™ line of Black+Decker outdoor power tools. The Black+Decker LSW321 has a button that gives it a surge in blowing speed when pressed. Although POWERBOOST uses a lot of power (which drains the battery faster) , it is quite useful for loosening up those stubborn patches of debris that get stuck and otherwise refuse to budge. When POWERBOOST is used sparingly, the LSW321 enjoys a normal runtime, so this feature is definitely ideal for tackling less rigorous tasks with more precise control.
The bottom line
- In the expected price range
- Lightweight (3.7 lbs)
- POWERBOOST Technology
- High MPH (130 MPH)
- Acceptable noise (54 dB)
- Good autonomy (25 mins)
- Brushed motor
- No speed variation
- Low CFM (100 CFM)
About Black+Decker
The Stanley Black & Decker Corporation is an American manufacturer that has produced and sold quality tools and accessories for over a hundred years. The corporation sells a wide variety of hand tools, power tools, security systems and more through its many subsidiary brands: Stanley, Black & Decker, DeWalt, Mac, Bostitch, and more. Stanley Black & Decker counts itself as a leading global manufacturer of tools and similar products with a market presence in over 100 countries.
Warranty Information
The Black+Decker LSW321 is covered under a warranty for up to 2 years. This warranty may not cover all parts of the blower.
For more information about the warranty of Black+Decker blowers, please consult Black+Decker's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-800-544-6986.
Questions & Answers
I have lost the original box for my LSW3211 blower. Did it come with a battery charger? If not, how do I charge the battery? Thanks. (Asked July 26, 2021)
The unit does come with a battery charger. If you lost it, the LCS1620 (opens in a new tab) is the charger you're looking for.
Couldn't find the right answer for you? Ask your own question.