Heavy Duty Cordless String Trimmers That Really Cut It
For most heavy duty trimming, the EGO Power+ ST1623T is the top pick, offering commercial-grade power and a 15 inch cutting swath that handles thick brush easily. Its main limitation is the high price, especially when purchased with the required battery and charger.
Battery powered trimmers have come a long way. They now rival gas models in cutting ability without the noise, fumes, and maintenance headaches. Heavy duty models use brushless motors and larger batteries to power through dense weeds and overgrown edges.
Choosing the right one depends on your property size and the type of vegetation you face. This roundup covers a range of options, from professional grade to value focused, helping you match a trimmer to your specific needs.
What we recommend
EGO Power+ ST1623T 15-Inch Cordless String Trimmer
This EGO trimmer delivers gas-like power with a brushless motor and a 15 inch cutting width. It features a dual feed line system that automatically feeds line with a tap, reducing downtime. Users report it handles thick weeds and saplings without bogging down, and the variable speed trigger offers precise control.
Pros
- Powerful motor for tough vegetation
- Quiet operation with low vibration
- Weather resistant construction
Cons
- Battery and charger not included
- Heavier than some competitors
DEWALT DCST972X1 60V MAX 16-Inch Cordless String Trimmer
DEWALT’s 60V trimmer offers a 16 inch cutting swath and a high efficiency brushless motor. It uses a dual action bump feed system for quick line advancement. Owners appreciate the variable speed trigger and the ability to use the same batteries across many DEWALT tools. The power load indicator helps manage runtime.
Pros
- Excellent power for commercial use
- Wide cutting path reduces time
- Interchangeable with other DEWALT tools
Cons
- Battery is heavy and adds weight
- Pricey for DIY users
Milwaukee M18 FUEL 15-Inch Quik-Lok String Trimmer
Milwaukee’s Quik-Lok system lets you convert the trimmer into a pole saw, hedge trimmer, or edger by attaching different heads. The trimmer itself offers a 15 inch cutting width and a brushless PowerState motor. It features a bump feed head and a comfortable loop handle. Users love the adaptability but note the initial cost for the trimmer head alone.
Pros
- Multiple attachments available
- Powerful and efficient motor
- Durable construction
Cons
- Trimmer only, attachments sold separately
- Battery not included
Makita XRU15PT1 18V LXT 15-Inch Cordless String Trimmer
Makita’s 18V trimmer is lighter than many gas models, reducing arm strain during long sessions. It has a 15 inch cutting width and an active feedback sensing technology that prevents damage to the motor. The bump feed system is reliable, and the split shaft design makes storage easy.
Pros
- Lightweight and well balanced
- Dual batteries extend runtime
- Quiet operation
Cons
- Less power than 36V or 60V models
- Batteries take time to charge
Greenworks Pro 80V 16-Inch Cordless String Trimmer
This Greenworks trimmer comes with an 80V battery and charger, offering a 16 inch cutting width at a lower price point than many competitors. It features a brushless motor and a variable speed trigger. Users report it has enough power for most residential heavy duty tasks, though it may struggle with very thick brush.
Pros
- Battery and charger included
- Wide cutting swath
- Affordable for the power
Cons
- Battery runtime is moderate
- Not as durable as commercial grade
Ryobi 40V HP Brushless 17-Inch Whisper Series String Trimmer
Ryobi’s Whisper Series trimmer is designed for low noise without sacrificing performance. It has a 17 inch cutting width, one of the widest available, and a brushless motor that reduces vibration. The bump feed system is easy to use, and the pivoting head helps with edging. Some users find the line advance can be finicky.
Pros
- Extremely quiet operation
- Very wide cutting path
- Pivoting head for edging
Cons
- Battery and charger not included
- Line feeding can be inconsistent
Craftsman V20 13-Inch Cordless String Trimmer
Craftsman’s V20 trimmer is a compact option that is still heavy duty enough for typical residential use. It has a 13 inch cutting width, making it easy to maneuver around flower beds and fences. The trimmer features a brushless motor and a bump feed line system. Users appreciate its lightweight design but note it lacks power for very thick weeds.
Pros
- Lightweight and easy to handle
- Good for detailed trimming
- Affordable price point
Cons
- Narrow cutting width
- Limited power for extreme overgrowth
What to look for
The lineup, side by side
| # | Model | Cutting Width | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | EGO Power+ ST1623T 15-Inch Cordless String Trimmer | 15 inches | Best overall for heavy duty trimming | 9.4 | Check price |
| 2 | DEWALT DCST972X1 60V MAX 16-Inch Cordless String Trimmer | 16 inches | Best battery platform flexibility | 9.2 | Check price |
| 3 | Milwaukee M18 FUEL 15-Inch Quik-Lok String Trimmer | 15 inches | Best modular design for yard work | 9.0 | Check price |
| 4 | Makita XRU15PT1 18V LXT 15-Inch Cordless String Trimmer | 15 inches | Best for reduced fatigue | 8.8 | Check price |
| 5 | Greenworks Pro 80V 16-Inch Cordless String Trimmer | 16 inches | Best value with battery included | 8.6 | Check price |
| 6 | Ryobi 40V HP Brushless 17-Inch Whisper Series String Trimmer | 17 inches | Best for quiet operation | 8.4 | Check price |
| 7 | Craftsman V20 13-Inch Cordless String Trimmer | 13 inches | Best for tight spaces and small yards | 8.2 | Check price |
Common questions
Can a cordless string trimmer really handle heavy duty tasks?
Yes, modern brushless models with 40V or higher batteries can cut through thick weeds, overgrown grass, and small brush. They match the power of many gas trimmers, though continuous runtime may be less.
How long does a battery last on a heavy duty trimmer?
Runtime varies based on battery capacity and load. With a 5Ah battery, expect 20 to 40 minutes of continuous heavy trimming. Higher capacity batteries up to 12Ah can extend runtime to over an hour.
Are heavier duty trimmers heavier to use?
Often yes, because larger batteries and motors add weight. However, many models have ergonomic designs and harness options to reduce fatigue. Try to choose a trimmer with a well balanced design.
What is the difference between bump feed and automatic feed?
Bump feed requires you to tap the trimmer head on the ground to release more line. Automatic feed releases line as needed without manual action, but it can be less predictable. Most heavy duty trimmers use bump feed for reliability.
Do I need to buy a battery separately?
Some trimmers are sold as kits with batteries and chargers, while others are bare tools. Check the product details. If you already own tools from the same brand, buying a bare tool is cost effective.
Can I use the same battery in other tools from the same brand?
Yes, if they use the same voltage and battery platform. For example, DEWALT 60V batteries work across many DEWALT 60V tools. This compatibility is a major advantage for those invested in a brand’s ecosystem.
What is a brushless motor and why is it better?
A brushless motor uses electronic commutation instead of brushes, resulting in less friction, reduced heat, and higher efficiency. It delivers more torque and longer motor life compared to brushed motors.
Are cordless trimmers quieter than gas trimmers?
Yes, cordless trimmers are significantly quieter, producing around 85 decibels or less, while gas trimmers can exceed 100 decibels. This is easier on your ears and less disturbing to neighbors.
How do I store a cordless trimmer?
Most trimmers can be hung on a wall or placed on a shelf. Some models have a split shaft design for compact storage. Keep the battery at room temperature and avoid extreme cold or heat.
What maintenance does a cordless trimmer need?
Minimal maintenance is required. Keep the trimmer clean, check for debris around the head, and replace the line when needed. The battery should be stored partially charged and charged regularly to maintain health.
Final word
For most users, the EGO Power+ ST1623T is the best heavy duty cordless string trimmer because it combines commercial grade power with a reasonable weight and a reliable bump feed system. If battery compatibility with other tools is important, consider the DEWALT 60V model, which also offers excellent performance. Budget conscious buyers will appreciate the Greenworks Pro 80V, which includes a battery and charger, but it may not last as long under heavy use.
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