DEWALT 20V MAX String Trimmer Review

The DEWALT 20V MAX String Trimmer is a popular cordless option for homeowners who want to ditch gas and extension cords. Our editorial team compared specifications, buyer feedback and key decision factors to give you an honest assessment of its performance, battery life, build quality, and ease of use. We also compare it to similar battery trimmers to help you decide if it's the right tool for your yard.

Design and Build Quality

The DEWALT 20V MAX trimmer features a straight shaft design that feels sturdy and well-balanced. The shaft is made of aluminum, which adds durability without excessive weight. The handle is ergonomic with a soft grip, making it comfortable for extended use. The trimmer head is compact, allowing for easy maneuverability around flower beds and fences.

One notable feature is the adjustable auxiliary handle that can be rotated for different cutting angles. This is especially useful for edging. The overall construction feels robust, and many users report that it holds up well over time. However, some users have noted that the bump feed head can be a bit finicky, occasionally requiring a few extra taps to advance the line.

Performance

The 20V MAX motor provides enough power for regular trimming tasks. It cuts through grass and light weeds with ease, but it struggles with thick, overgrown vegetation. The 13-inch cutting width is standard for battery trimmers and helps reduce trimming time. The line feed is bump activated, which is convenient, though some users prefer a push feed system for consistency.

When compared to similar models like the Ryobi 18V or Black+Decker 20V trimmers, the DEWALT performs admirably. It has a slightly higher cutting speed and a more durable build. However, it lacks the variable speed trigger found on some competitors, which can limit control when working near delicate plants.

Battery Life

Battery life is a common concern with cordless trimmers. With the included 2Ah battery, you can expect about 20 to 30 minutes of runtime. This is sufficient for a small yard, but for larger properties, you may need multiple batteries. The good news is that the trimmer is compatible with all DEWALT 20V MAX batteries, so if you already own other DEWALT tools, you can use higher capacity batteries for longer runtime.

Using a 5Ah battery can extend runtime to around 45 to 60 minutes, which is more competitive with other brands. However, the trimmer does not come with a battery in the tool-only version, so factor in the cost of batteries if you are starting fresh.

Ease of Use

Setting up the trimmer is straightforward. The shaft is pre-assembled, and you only need to attach the handle and bump feed head. The bump feed system is easy to use: simply tap the head on the ground to advance the line. The trimmer is lightweight at just over 6 pounds, reducing fatigue during use.

The straight shaft design makes it easier to reach under bushes and along edges. The adjustable handle allows for a comfortable grip for users of different heights. Overall, the trimmer is user-friendly, even for those new to battery-powered tools.

Cleaning and Maintenance

Maintenance is minimal. After each use, wipe down the trimmer to remove grass clippings and debris. The bump feed head can be disassembled to replace the line, which is a simple process. The battery should be stored in a cool, dry place, and it's recommended to avoid letting it fully discharge.

One thing to note: the trimmer line can wear out quickly if you are cutting against hard surfaces like concrete. Using the correct line diameter (0.065 inches) and avoiding contact with hard surfaces will extend line life.

Common Buyer Complaints

While the DEWALT 20V MAX trimmer receives mostly positive reviews, there are some common complaints. The most frequent issue is battery life, especially with the standard 2Ah battery. Users with larger yards often find themselves running out of power before finishing the job.

Another complaint is the bump feed mechanism, which can sometimes jam or fail to advance the line smoothly. Some users have also mentioned that the trimmer lacks power for thick weeds, requiring multiple passes. Finally, a few users have reported that the battery indicator on the trimmer is not always accurate, so it's wise to keep a spare battery handy.

Comparison with Similar Models

When compared to the Ryobi 18V One+ trimmer, the DEWALT offers a more robust build and slightly better performance, but the Ryobi has a wider range of attachments. The Black+Decker 20V trimmer is cheaper but less durable. The EGO 56V trimmer outperforms the DEWALT in power and runtime, but it is significantly more expensive and uses a different battery platform.

For most homeowners, the DEWALT strikes a good balance between price, performance, and brand reliability. If you are already invested in the DEWALT 20V MAX system, this trimmer is a natural addition.

Final Verdict

The DEWALT 20V MAX String Trimmer is a solid choice for light to medium-duty trimming. It offers good build quality, ease of use, and the convenience of a shared battery platform. While battery life and power may not satisfy heavy users, it is more than adequate for typical residential use. If you need a reliable cordless trimmer and already own DEWALT tools, this is a worthwhile investment.

Frequently Asked Questions

How long does the battery last?

With a 2Ah battery, expect 20-30 minutes. With a 5Ah battery, up to 60 minutes.

Is it good for edging?

Yes, the adjustable head allows for vertical edging.

Does it come with a battery?

Some kits include a battery and charger, but tool-only versions are available.

Can I use any DEWALT battery?

Yes, all 20V MAX batteries are compatible.

How do I replace the line?

Remove the spool, wind new line, and feed through the eyelets. It takes a few minutes.