Choosing the right string trimmer can often feel like navigating a maze of power sources, features, and brands. Many homeowners make the mistake of prioritizing raw power over practical features like ease of use and versatility, leading to frustration with bulky or complicated tools. But what if you could have both efficiency and simplicity in one package? Enter the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger, a 2-in-1 cordless string trimmer and edger designed to simplify your lawn care routine. With its POWERDRIVE transmission and automatic spool feed, this tool promises to make quick work of overgrown areas and unruly edges, all without the hassle of gas or cords.
In this comprehensive review, we’ll examine the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger’s specifications, highlight its key strengths and potential drawbacks, and provide practical insights into its performance. Our analysis is based on manufacturer specs and aggregated user feedback, offering you an unbiased perspective. We’ll also compare it against notable alternatives like the CRAFTSMAN V20 13-inch Cordless String Trimmer Kit, the BLACK+DECKER LST136 40V MAX 13-inch String Trimmer, and the EGO POWER+ 16″ Cordless Weed Trimmer ST1623T, to help you make an informed decision for your lawn care and mowing needs.
BLACK+DECKER LST300 20V MAX 12-Inch String Trimmer/Edger
Our Verdict
The BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger is a highly versatile 2-in-1 tool, combining a string trimmer and edger in one lightweight, cordless design. Its POWERDRIVE transmission and automatic feed spool simplify operation, making it ideal for managing tough overgrowth and maintaining tidy lawn edges with minimal effort.
- POWERDRIVE Transmission for enhanced cutting power
- Automatic Feed Spool (AFS) for continuous trimming
- Easy 2-in-1 conversion from trimmer to edger
- Lightweight and quiet operation
- Adjustable handle and height for comfort
- Includes battery and charger
- Battery runtime may be insufficient for larger yards
- 12-inch cutting swath is smaller than some competitors
Specifications
| Spec | Value | Spec | Value |
|---|---|---|---|
| Power Source | Battery Powered | Weight | 5.7 pounds |
| Warranty | 2 year limited warranty | In the Box | Included Components: LST300 20V MAX* Cordless Trimmer/Edger, (1) LBXR2020 20V MAX* lithium ion battery, (1) Charger, (1) AF-100 Spool, (1) Guard |
In-Depth Review
Power and Performance for Everyday Tasks
The BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger is equipped with a 20V MAX lithium-ion battery, delivering 6200 RPM to the cutting string thanks to its POWERDRIVE Transmission. This feature ensures that more power is transferred from the motor to the cutting line, allowing it to tackle tough overgrowth and heavy weeds more effectively. Users report that this power output is sufficient for typical suburban yards, making it a reliable choice for routine trimming and edging. The included 2.0 Amp hour battery pack also offers 33% more runtime than previous models, providing extended use for most tasks.
Effortless Line Management with Automatic Feed Spool
One of the standout features of the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger is its Automatic Feed Spool (AFS). This system automatically feeds new trimmer line as needed, eliminating the common frustration of bumping the head to advance the line. This means continuous work without interruptions, saving both time and effort. This convenience is particularly appreciated by users who want a smooth and uninterrupted trimming experience, whether they are clearing weeds or creating crisp edges.
Versatile 2-in-1 Design for Trimming and Edging
The BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger excels in versatility, easily converting from a string trimmer to an edger in mere seconds. This dual functionality means you don’t need separate tools for different tasks, streamlining your yard work and saving storage space. The 12-inch cutting swath is ideal for navigating around garden beds, fences, and other obstacles, while the edger function provides clean, professional-looking lines along driveways and walkways. For more demanding tasks, you might consider alternatives like the WORX WG170 20V 12″ 3-in-1 Cordless Trimmer.
Comfort and Control with Lightweight, Adjustable Design
Designed with user comfort in mind, the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger features a lightweight build and an adjustable handle and height positions. This ergonomic design allows users to customize the tool to their preference, reducing fatigue during extended use. Its quiet operation and easy start-up further enhance the user experience, making it a pleasant alternative to noisy, gas-powered models. The inclusion of a wall-mountable charging base also adds to the convenience, ensuring the tool is always ready for action.
How It Compares
Quick Comparison: Alternatives
- – Automatic line feed saves time and effort.
- – Lightweight and easy to maneuver.
- – Quiet operation compared to gas trimmers.
- – Versatile 2-in-1 trimmer and edger functionality.
- – Good power for cutting through thick grass.
- – Lightweight and easy to maneuver for comfortable use.
- – Powerful 40V motor capable of handling dense weeds and overgrowth.
- – Convenient automatic line feed eliminates manual bumping.
- – Easy conversion between trimming and edging functions.
- – Auto-feed LINE IQ eliminates bumping.
- – Fast line reload with POWERLOAD.
- – Lightweight at 7.5 lbs.
- – Battery life may be limited for larger yards.
- – Not as powerful as some gas models for heavy brush.
- – Line can break easily on thick weeds.
- – Actual battery runtime may be shorter than advertised, especially at high speed.
- – Can be slightly heavier than some previous models.
- – Some users reported battery failure after a few charge cycles, though customer service rectified it.
- – Battery life might be insufficient for very large properties without a spare.
- – May not have the raw power of a high-end gas trimmer for extremely heavy-duty tasks.
- – Only one battery included.
- – No variable speed trigger.
- – Higher price than some competitors.
Head-to-Head: How Does It Stack Up?
When comparing the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger to the CRAFTSMAN V20 13-inch Cordless String Trimmer Kit (Competitor), the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger offers a slightly lower cutting swath at 12 inches compared to CRAFTSMAN’s 13 inches, which might mean a few extra passes for larger areas. However, the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger’s POWERDRIVE Transmission and Automatic Feed Spool provide consistent power delivery and uninterrupted trimming, which can be a significant advantage over manual line feeding systems. The CRAFTSMAN, with its 4Ah battery, boasts up to 63 minutes of runtime and 52% more power, making it a strong contender for those with more demanding tasks or larger properties. If you prioritize continuous, no-fuss operation for medium-sized yards, the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger is a strong choice; for extended runtime and raw power, the CRAFTSMAN may be more suitable.
Against the BLACK+DECKER LST136 40V MAX 13-inch String Trimmer (Same-Brand Alternative), the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger is a more entry-level option with a 20V battery compared to the LST136’s 40V MAX system. The LST136 offers a larger 13-inch cutting swath and a PowerCommand Dial to choose between maximum power (up to 8500 RPM) or maximum runtime, along with a faster charging time of 2 hours or less. While the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger is excellent for light to medium duty work with its 20V system, the LST136 is designed for tackling tougher weeds and larger areas with its higher voltage and adjustable power settings. If your yard requires more muscle and longer runtime, or if you need to tackle very thick overgrowth, the LST136 might be a better investment, while the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger remains a solid choice for general maintenance.
The EGO POWER+ 16″ Cordless Weed Trimmer ST1623T (Competitor) stands out with its innovative features like LINE IQ and POWERLOAD technology, offering an impressive 16-inch cutting swath and up to 60 minutes of runtime with its 4.0Ah battery. The BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger, while efficient with its 12-inch swath and AFS, cannot match the EGO’s advanced line management and larger cutting capacity. The EGO also features a telescopic carbon fiber shaft for superior comfort and a high-efficiency brushless motor for durability. The BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger is a more budget-friendly and simpler option for smaller yards, while the EGO POWER+ is clearly geared towards users seeking premium features, maximum efficiency, and a larger cutting area for more extensive lawn care, as detailed in our BLACK+DECKER LST522 MAX String Trimmer review.
Is It Right for You?
Consider Something Else If…
- You have a very large property that requires extended battery runtime beyond what a 2.0 Ah battery can provide.
- You frequently encounter extremely thick brush or woody weeds that demand higher voltage and more cutting power.
- You prefer a wider cutting swath for faster coverage of open areas.
Best For
- Homeowners with small to medium-sized yards needing a reliable tool for routine trimming and edging.
- Individuals seeking a lightweight and easy-to-maneuver string trimmer for comfortable use.
- Users who appreciate the convenience of an automatic line feed system, eliminating manual bumping.
- Those looking for a quiet, battery-powered alternative to gas trimmers, complete with an included battery and charger.
Consider Something Else If…
- You require a trimmer for commercial use or heavy-duty landscaping projects.
- You need advanced features like variable speed control or telescopic shaft adjustment for specialized tasks.
- Your budget allows for a premium model with longer warranty periods or a broader tool ecosystem, which might be found in options like the BLACK+DECKER LCC340C Cordless Trimmer Sweeper Combo.
Final Verdict
The BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger stands out as a highly practical and user-friendly solution for everyday lawn maintenance. Its 20V MAX battery, combined with the POWERDRIVE Transmission, provides ample power for typical trimming and edging tasks, making quick work of moderate overgrowth. The standout feature, the Automatic Feed Spool, significantly enhances the user experience by eliminating the hassle of manual line advancement. While its 12-inch cutting swath and 2.0 Ah battery might not be sufficient for very large properties or extremely dense vegetation, it strikes an excellent balance between performance and convenience for the average homeowner.
However, potential buyers should be aware of its limitations for heavy-duty use. If your yard consistently presents challenges like very thick brush or if you require extended runtime for large areas, you might find yourself needing to recharge more often or wishing for a larger cutting diameter. For those with significant landscaping demands, a higher voltage system or a model with a larger battery capacity might be a more suitable choice.
Ultimately, the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger is an excellent choice for homeowners seeking a reliable, lightweight, and easy-to-operate cordless string trimmer and edger. It’s particularly well-suited for small to medium-sized yards, offering a hassle-free experience that prioritizes convenience and efficient performance for routine upkeep. If you value simplicity, comfort, and effective trimming without the fuss of gas or cords, this BLACK+DECKER model is a strong contender.
View on Amazon.comFrequently Asked Questions
What is the battery life of the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger?
The BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger includes a 2.0 Amp hour lithium-ion battery pack, which provides 33% more runtime than previous BLACK+DECKER 20V batteries. Actual runtime will vary depending on the task and density of vegetation, but it’s generally sufficient for small to medium-sized yards.
How does the Automatic Feed Spool (AFS) work on this trimmer?
The Automatic Feed Spool (AFS) system on the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger automatically feeds new trimmer line as it wears down, meaning you don’t need to bump the head on the ground to advance the line. This feature ensures continuous trimming without interruptions, enhancing efficiency and user convenience.
Can the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger be used as both a trimmer and an edger?
Yes, the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger is designed as a 2-in-1 tool, capable of converting from a string trimmer to an in-line edger in seconds. This versatility allows you to easily switch between cutting grass and creating clean, precise edges along your lawn or pathways.
Is the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger comfortable to use for extended periods?
According to the manufacturer, the BLACK+DECKER LST300 MAX 12-Inch String Trimmer/Edger features a lightweight design along with an adjustable handle and height positions. These ergonomic considerations are intended to provide maximum comfort and control, reducing user fatigue during longer periods of use.
Browse All Models
Pros
- Versatile 2-in-1 trimmer and edger functionality
- Good power for cutting through thick grass
- Lightweight and easy to maneuver for comfortable use
- Battery powered eliminates gas and cord hassles
- Adjustable handle for user comfort
- Great value for the price, especially with included battery and charger
Cons
- Actual battery runtime may be shorter than advertised, especially at high speed
- Can be slightly heavier than some previous models
The CRAFTSMAN V20 String Trimmer and Lawn Edger Kit, model CMCST901M1, is a compelling choice for homeowners seeking a versatile and powerful solution for yard maintenance. This 2-in-1 tool combines a string trimmer and a lawn edger, allowing you to tackle different tasks with a single, convenient device. Powered by the CRAFTSMAN V20 battery system, it offers the freedom of cordless operation, eliminating the need for gas or cumbersome extension cords.
One of the standout features is its performance. With a 13-inch cutting swath and 52% more power compared to older models, it's designed to slice through thick grass and weeds efficiently. The inclusion of two speed settings allows users to prioritize either maximum power for challenging areas or extended runtime for lighter trimming. The Turn-To-Edge functionality makes transitioning from trimming to edging seamless, providing clean and crisp lawn borders.
While the advertised runtime is up to 63 minutes, user reviews indicate that actual battery life can vary, often being shorter when operating at higher speeds or in dense growth. However, many users appreciate the overall power and the convenience of the V20 battery system, especially if they already own other CRAFTSMAN V20 tools. The adjustable handle also contributes to user comfort, making it suitable for various heights and reducing fatigue during longer tasks.
Overall, the CRAFTSMAN V20 String Trimmer and Lawn Edger Kit offers excellent value for its price, especially considering it comes with a 4.0Ah battery and charger. It's a robust and user-friendly tool that effectively handles typical yard trimming and edging needs, making it an ideal choice for small to medium-sized properties. For those needing extended use, an additional battery might be a worthwhile investment.
Pros
- Powerful 40V motor capable of handling dense weeds and overgrowth.
- Convenient automatic line feed eliminates manual bumping.
- Easy conversion between trimming and edging functions.
- Adjustable power settings to optimize for task or battery life.
- Fast charging battery and state of charge indicator keep you working longer.
- Lighter and quieter than gas-powered alternatives, making it user-friendly.
Cons
- Some users reported battery failure after a few charge cycles, though customer service rectified it.
- Battery life might be insufficient for very large properties without a spare.
- May not have the raw power of a high-end gas trimmer for extremely heavy-duty tasks.
The BLACK+DECKER LST136 40V MAX 13-inch String Trimmer and Edger is a robust cordless solution designed to simplify yard maintenance for homeowners. Powered by a 40V MAX* lithium-ion battery and featuring POWERDRIVE Transmission, this tool delivers impressive power to cut through tough weeds and overgrown areas efficiently. Its 2-in-1 design allows for quick conversion from a string trimmer to a lawn edger, providing versatility for various landscaping tasks.
One of the standout features is the Automatic Feed Spool (AFS), which ensures a continuous supply of trimmer line without the need for manual bumping, enhancing convenience and maintaining workflow. The PowerCommand Dial is another thoughtful addition, enabling users to switch between maximum power for challenging growth and maximum runtime for longer trimming sessions, adapting to specific needs. With an included fast charger, the battery is ready for action in two hours or less, minimizing downtime.
While many users praise its power and ease of use, especially when compared to older 18V models or gas trimmers, some have noted occasional battery issues. However, customer service has been responsive in addressing these concerns. Its lightweight design and adjustable height, coupled with a soft-grip handle, contribute to comfortable operation, making it accessible even for those who find heavier gas models cumbersome. This trimmer is an excellent choice for suburban lawns, offering a blend of power, convenience, and eco-friendliness.
The LST136 operates at speeds up to 8500 RPM, ensuring clean and efficient cuts. It comes as a complete kit, including the trimmer/edger tool, a 40V MAX* 2.0AH lithium-ion battery, a fast charger, an AF 100 spool, guard, and an auxiliary handle. Backed by a 3-year limited warranty, it offers peace of mind for your investment. For those seeking a dependable, powerful, and easy-to-manage cordless trimmer and edger, the BLACK+DECKER LST136 is a highly recommended option.
Pros
- Auto-feed LINE IQ eliminates bumping
- Fast line reload with POWERLOAD
- Lightweight at 7.5 lbs
- Telescopic carbon fiber shaft
- Long runtime up to 60 minutes
Cons
- Only one battery included
- No variable speed trigger
- Higher price than some competitors
The EGO POWER+ 16" Cordless Weed Trimmer with Battery and Charger (model ST1623T) is a battery-powered string trimmer designed for homeowners who want professional-grade performance without the hassle of gas or cords. It features EGO's patented LINE IQ technology, which automatically senses and feeds the trimmer line to maintain a consistent 16-inch cutting swath without bumping the head. The trimmer also includes POWERLOAD technology for quick and easy line reloading.
This trimmer is ideal for medium-sized yards and regular lawn maintenance. It delivers up to 60 minutes of runtime on a single charge with the included 4.0Ah battery, and the battery recharges in just 55 minutes with the included charger. The brushless motor provides efficient power with low vibration, and the digital variable speed selector lets you adjust the speed to match the task.
The telescopic carbon fiber shaft is a standout feature, allowing you to adjust the length for comfortable use regardless of your height. The shaft is also stronger than standard trimmer shafts, adding to the tool's durability. The trimmer works with all EGO 56V ARC Lithium batteries, so it integrates seamlessly into the EGO platform.
While the ST1623T offers impressive features and build quality, it comes with only one battery, which may be limiting for larger properties. Additionally, it lacks a variable speed trigger, relying instead on a selector switch. The price is higher than many cordless trimmers, but the combination of LINE IQ, POWERLOAD, and a carbon fiber shaft justifies the investment for those seeking a premium trimming experience.
Overall, the EGO POWER+ ST1623T is an excellent choice for homeowners who value convenience and performance. Its innovative line feeding and reloading systems save time, and the lightweight design reduces fatigue during extended use. If you are looking for a reliable, low-maintenance string trimmer for your yard, this model is well worth considering.
Pros
- Quick and easy conversion between trimming and edging modes.
- Command Feed system provides convenient, on-demand line.
- Lightweight construction makes it easy to maneuver and reduces fatigue.
- Included Power Share batteries offer versatility across WORX tool lineup.
- Adjustable features like the tilting head and spacer guard enhance usability.
Cons
- Battery runtime may vary depending on task intensity.
- 12-inch cutting width might be small for very large yards.
- Requires purchasing additional spools after included 'free spools for life' offer.
The WORX WG163 20V 12" 2-in-1 Cordless String Trimmer & Electric Lawn Edger is a practical solution for homeowners seeking to maintain their lawns with ease. This innovative tool seamlessly transitions from a powerful string trimmer to a precise in-line edger in mere seconds, eliminating the need for separate devices and saving valuable storage space and money.
Designed with user convenience in mind, the WG163 boasts a lightweight build at just 5.5 lbs, significantly reducing fatigue during extended use. The Command Feed spool system allows for instant line advancement with a simple push of a button, ensuring uninterrupted work. For those with uneven terrain or hard-to-reach spots, the 90° tilting head provides excellent maneuverability. Additionally, rubberized wheels offer stable guidance for achieving clean, professional-looking edges, while an adjustable spacer guard protects delicate plants and landscaping from accidental damage.
A standout feature of this WORX tool is its inclusion of two powerful 20V Power Share maxLithium batteries. These batteries are not only lightweight but are also interchangeable with any other tool within the extensive WORX Power Share platform, offering exceptional versatility and value. While the 12-inch cutting width is suitable for most residential yards, those with exceptionally large properties might find it takes a bit longer to complete their tasks. Overall, the WORX WG163 is an excellent choice for anyone looking for an efficient, lightweight, and versatile lawn care tool.
Pros
- Automatic line feed saves time and effort
- Lightweight and easy to maneuver
- Quiet operation compared to gas trimmers
- Versatile 2-in-1 trimmer and edger functionality
- Battery and charger included for immediate use
Cons
- Battery life may be limited for larger yards
- Not as powerful as some gas models for heavy brush
- Line can break easily on thick weeds
The BLACK+DECKER LST300 20V MAX String Trimmer and Edger is a versatile, cordless 2-in-1 tool designed for homeowners who need a reliable solution for trimming grass and edging along sidewalks and driveways. With its PowerDrive transmission, it delivers 6200 RPM for efficient cutting through overgrowth and heavy weeds, making it a solid choice for small to medium-sized yards.
One of its standout features is the Automatic Feed Spool (AFS), which automatically feeds trimmer line as needed without the hassle of bumping the head. This, combined with its lightweight design at just 5.7 pounds and adjustable handle and height positions, ensures comfortable and controlled operation. The 2-in-1 design allows quick conversion from trimmer to edger in seconds, adding to its convenience.
The included 20V MAX lithium-ion battery offers 33% more runtime than previous models, and the charger is wall-mountable for easy storage. The steel deck adds durability, while the quiet operation and lack of gas or oil mess make it an attractive alternative to gas-powered trimmers.
However, the battery life may be limited for larger properties, and it may struggle with very thick brush compared to more powerful gas models. Some users have reported that the trimmer line can break easily on dense weeds.
Overall, the BLACK+DECKER LST300 is an excellent value for homeowners seeking a lightweight, easy-to-use, and quiet cordless trimmer and edger for routine lawn maintenance. Its automatic feed and 2-in-1 versatility make it a top pick in its class.



