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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Black+Decker LSW321 100 CFM Cordless BlowerBlack+Decker LSW321 100 CFM Cordless Blower
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Features and Specifications

Type Cordless
Handling Handheld
CFM Up to 100
MPH Up to 130
Blowing Force N/A
Voltage20 V
Speed settings 1
Battery Li-ion
Autonomy 25 mins
Vacuum No
Battery included 1
Weight (w/ battery)3.7 lbs
Weight (tool only)2.8 lbs
Noise rating 54 dB
Warranty 2 years

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue. Should you wish more detailed specs on the Black+Decker LSW321, the user manual is available here (opens in a new tab).

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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. (source: Black+Decker)

Overview of the Black+Decker LSW321

The Black+Decker LSW321 in use

The Black+Decker LSW321

  • Power: The LSW321, manufactured by Black+Decker, is a cordless blower with a maximum air speed of 130 MPH and a maximum air volume rating of 100 CFM.
  • Power delivery: Those who don’t want to fuss with cords will be glad to know that this blower is battery-operated.
  • Battery: Its 2 Ah 20 V Li-ion battery (1 LBXR2020 battery included) enables the blower to run for up to 25 minutes without needing to recharge.
  • Handling: Designed to be handheld, this blower offers excellent maneuverability, making it effortless to carry and use for short periods. Among other cordless handheld blowers, the Black+Decker LSW321 can be considered light, weighing only 3.7 lbs, battery included.
  • Speed Settings: The Black+Decker LSW321 does not have multiple speed settings. Once the blower is turned on, it always operates at the same speed.
  • Noise: Its noise level of 54 dB falls within the expected range for 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).

  • It can propel air from the nozzle at speeds going up to 130 MPH, placing it at the top of its class for air velocity among battery-operated handheld blowers. 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.
  • With a maximum airflow of 100 CFM (cubic feet per minute), this model is on the lower end in terms of air circulation for cordless handheld blowers. For the highest air volume, you may want to have a look at the Ryobi PBLLB01K, which boasts with 510 CFM.
  • Within the voltage range of 18V to 24V, the LSW321 falls within the typical autonomy range for cordless handheld units, delivering up to 25 minutes of operation on a full charge. If autonomy is an important factor for you, the Ryobi PBLLB01K can run for up to 60 minutes and could be worth considering.

Price comparison

As you can see from these interactive charts, when compared to other cordless blowers, the Black+Decker LSW321 is on the cheap side of the price range.

It can therefore be a really good buy if you're looking to acquire a budget blower.


Black Decker Powerboost banner

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

  • Inexpensive
  • 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)

Do you own the Black+Decker LSW321 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

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.

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