Best Battery String Trimmers for Large Yards
Battery string trimmers have caught up to gas for big properties, but only a handful of models carry enough watt hours and cutting width to finish a half acre or more without a recharge. This guide ranks seven currently sold cordless trimmers by runtime, cutting swath, line system, and real owner feedback, with a transparent Research Score instead of copied retailer stars.
Quick answer
The EGO Power+ ST1623T is the top pick for large yards thanks to its 16 inch cutting swath, telescopic carbon fiber shaft, and strong runtime on the 56V 4.0Ah battery.
Why trust ToolBuyerHub
- Cross-checked manufacturer-published specifications before writing any recommendation
- Verified US market availability and configuration for every model discussed
- Owner-feedback themes are summarized as feedback, never presented as our own hands-on testing
- No invented star ratings; see the visible Research Score criteria on this page
- Flagged chemical-compatibility and safe-handling guidance for sprayer and shredder equipment
- We compare manufacturer runtime and cutting-width specs against owner-feedback themes on Amazon and lawn care forums, and we flag models whose real-world runtime falls short of the box claim.
Research updated September 2026.
What Matters Most for This Category
For a large yard, runtime per charge matters more than peak power. Look at the battery included in the kit, the amp hour rating, and whether the trimmer uses a bump feed or a rapid reload head, since reloading line repeatedly on a big property gets old fast. Cutting swath of 15 to 16 inches clears fence lines and borders faster, and a brushless motor usually means better efficiency and longer life. If you already own a battery platform, staying in that ecosystem often beats chasing the single best trimmer.
| Model | Best for | Key specs | Research Score |
|---|---|---|---|
| EGO Power+ ST1623T 16 inch String Trimmer | Best Overall | 56V ARC Lithium battery, 16 inches | 94/100 |
| Greenworks 80V 16 inch String Trimmer | Best for Heavy Growth | 80V lithium-ion battery, 16 inches | 91/100 |
| DEWALT 20V MAX XR String Trimmer | Best for DEWALT Battery Owners | 20V MAX XR battery, 14 inches | 89/100 |
| Makita 18V LXT String Trimmer | Best for Makita 18V Owners | 18V LXT battery, 13 inches | 87/100 |
| Ryobi 40V HP Brushless String Trimmer | Best Mid-Range Value | 40V lithium-ion battery, 15 inches | 86/100 |
| WORX WG163 GT 3.0 20V String Trimmer | Best Budget | 20V lithium-ion battery, 12 inches | 82/100 |
| Black+Decker 20V MAX String Trimmer | Best Light-Duty Option | 20V MAX lithium-ion battery, 12 inches | 78/100 |
EGO Power+ ST1623T 16 inch String Trimmer
Top PickPros
- 16 inch swath clears large borders quickly
- Telescopic carbon fiber shaft adjusts for taller users
- Strong runtime on the included 4.0Ah battery
Cons
- Premium price compared with budget trimmers
- Battery and charger add bulk to the kit cost
EGO's 16 inch trimmer is one of the most widely recommended cordless models for bigger properties, pairing a brushless motor with a carbon fiber shaft that extends for reach. The Rapid Reload head lets you respool line without disassembling the head, which matters on long fence lines. Based on manufacturer specifications, it runs on the same 56V batteries as the rest of the EGO lineup.
Greenworks 80V 16 inch String Trimmer
High TorquePros
- 80V platform delivers strong torque for thick weeds
- 16 inch swath suits large properties
- Shares batteries with other Greenworks 80V tools
Cons
- Heavier than many 40V and 56V trimmers
- Battery drains faster in tall, wet grass
Greenworks 80V trimmer targets homeowners who let grass and weeds get ahead of them, using the higher voltage platform for more cutting torque. The 16 inch swath and brushless motor are aimed at large yards and fence rows. Owner feedback often notes it handles thicker stems than typical 40V models.
DEWALT 20V MAX XR String Trimmer
Ecosystem PickPros
- Uses the same 20V MAX batteries as DEWALT power tools
- Brushless motor for efficiency
- Lightweight and easy to maneuver
Cons
- 14 inch swath is smaller than 16 inch rivals
- Runtime depends heavily on which battery you own
For anyone already invested in DEWALT 20V MAX tools, this trimmer turns existing batteries into a yard tool without buying a new platform. The 14 inch swath is a bit narrower than the largest cordless trimmers, so it suits medium to large yards rather than the biggest lots. Brushless construction helps stretch runtime.
Makita 18V LXT String Trimmer
Platform ValuePros
- Runs on the widely used Makita 18V LXT platform
- Brushless motor with good efficiency
- Quiet operation compared with gas
Cons
- 13 inch swath is modest for very large yards
- Needs a higher capacity battery for long sessions
Makita's 18V LXT trimmer is a natural add-on for owners of the brand's drills, saws, and blowers. The narrower 13 inch swath means more passes on a big property, but the brushless motor and LXT battery compatibility keep it practical. It is best paired with a larger capacity LXT pack for extended runtime.
Ryobi 40V HP Brushless String Trimmer
Value PickPros
- 15 inch swath at a mid-range price
- Brushless HP motor for more cutting power
- Part of the large Ryobi 40V tool lineup
Cons
- Runtime varies by included battery size
- Not as powerful as 80V class trimmers
Ryobi's 40V HP trimmer sits in the sweet spot for large yards that do not need maximum voltage. The 15 inch swath and brushless motor cover most residential lots, and the 40V platform includes mowers, blowers, and chainsaws. Owner feedback generally praises the value for the price.
WORX WG163 GT 3.0 20V String Trimmer
Budget PickPros
- Low entry price for a cordless trimmer
- Converts to a wheeled edger
- Lightweight and easy to store
Cons
- 12 inch swath means more passes on large yards
- Best suited to lighter trimming tasks
The WORX GT 3.0 is a budget-friendly option that doubles as an edger with its pivoting head and wheeled guide. The 12 inch swath is smaller than the large-yard leaders, so it suits trimming around a big property rather than clearing it in one pass. It is a reasonable pick for lighter upkeep.
Black+Decker 20V MAX String Trimmer
Light DutyPros
- Very affordable and widely available
- Lightweight for quick touch-ups
- Automatic line feed reduces manual adjustments
Cons
- Not built for sustained large-yard trimming
- Smaller swath and lower power than premium models
Black+Decker's 20V MAX trimmer is a low-cost entry point for light trimming around a large property, such as walkways and flower beds. The automatic feed head cuts down on stopping to advance line manually. It is not intended for heavy, continuous clearing of a big lot.
Who Should Avoid the Top Pick
Skip battery trimmers for large yards if you routinely clear thick brush, saplings, or wet, waist-high growth, since a gas brush cutter or a dedicated clearing saw still wins there. Also avoid very small 12V or low-capacity 20V trimmers if your main goal is finishing a half acre or more in one session.
Before You Buy
Measure your actual trimming area and count how many battery charges you are willing to manage. Check which battery platform you already own, confirm the kit includes a battery and charger, and decide whether a bump feed or rapid reload head suits how often you respool. A second battery is often the difference between finishing the yard and waiting on a charger.
FAQs
How much runtime do I need for a large yard?
As a rough guide, plan for enough battery capacity to cover 30 to 60 minutes of continuous trimming, and consider a second battery if your property is near half an acre or more. Runtime drops in tall, wet grass.
Is 40V enough for a large yard, or do I need 80V?
A quality 40V or 56V brushless trimmer handles most large residential yards. Higher voltage platforms like 80V mainly help with thicker weeds and heavier growth, at the cost of more weight.
Should I buy a trimmer that uses batteries I already own?
Often yes. Staying in a platform you already use, such as DEWALT 20V MAX, Makita 18V LXT, or Ryobi 40V, saves money and charging clutter, as long as the trimmer's swath and runtime fit your yard.
What cutting swath is best for large yards?
A 15 to 16 inch swath clears large areas with fewer passes. Smaller 12 to 13 inch trimmers work but require more walking and more time on a big property.
Bump feed or rapid reload, which is better?
Bump feed advances line by tapping the head on the ground and is simple and reliable. Rapid reload heads let you respool without taking the head apart, which saves time if you trim a lot.
Can a battery trimmer replace a gas trimmer for a big yard?
For most residential large yards, yes, if you choose a 15 to 16 inch brushless model with adequate battery capacity. For heavy brush and all-day commercial work, gas still has an edge.
Our verdict
For most large yards, the EGO Power+ ST1623T offers the best mix of cutting width, runtime, and battery ecosystem. If you already own a specific brand's batteries, a trimmer from that platform, such as DEWALT 20V MAX or Makita 18V LXT, can be the smarter and cheaper choice. Match the swath and battery capacity to your actual property size before buying.