Best 15-Inch String Trimmers in 2026: 14 Picks Ranked by Specs
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
Selecting the best 15-Inch string trimmers requires looking closely at voltage, weight, and line capacity. We compared 14 cordless models ranked by their published specifications. The EGO Power+ 15-Inch Cordless String Trimmer leads because it combines a 56V system with a 2.5 Ah battery for robust, heavy-duty trimming. Each pick is based strictly on the specs listed on the product pages. This guide helps you decide which trimmer fits your yard size, existing battery platform, and cutting needs without guessing.
Quick picks
The best fit for you
- You need the best overall 15-inch trimmer EGO Power+ 15-Inch Cordless String Trimmer It uses a 56V brushless motor with thick 0.095-inch line for heavy trimming.
- You want to trim and clear leaves in one tool WORX 40V 15-Inch Trimmer and Blower Combo This combo kit includes a lightweight carbon fiber shaft and a high-volume blower.
- You prefer hassle-free push-button line loading Greenworks 24V 15-Inch String Trimmer with 6.0Ah Battery It features automated line loading and a durable carbon fiber shaft.
- You need a budget-friendly high-voltage option DCK 58V 15-Inch Brushless String Trimmer It delivers high-voltage power with a brushless motor and fast 48-minute recharging.
Our 14 picks
EGO Power+ 15-Inch Cordless String Trimmer
Best for: Yards needing heavy 0.095-inch line trimming
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 56V
- Cutting Swath
- 15-inch
- Power Source
- battery
- Motor Type
- brushless
- Line Feed System
- Rapid Reload
This cordless trimmer pairs a 15-inch cutting swath with a 56V brushless motor and a 2.5Ah battery. It uses 0.095-inch line loaded through a Rapid Reload head and provides variable-speed control. You get up to 45 minutes of run time per charge, with a 50-minute recharge cycle. It suits you if you maintain medium-sized lawns and want standard 15-inch coverage without dragging an extension cord or mixing fuel.
Pros
- 56V brushless motor with variable-speed control
- Rapid Reload head accepts 0.095-inch cutting line
- Includes 2.5Ah battery and 50-minute charger
- Lightweight 7.4-pound total tool weight
- 5-year tool warranty and 3-year battery warranty
Cons
- Maximum run time is 45 minutes on the included 2.5Ah battery
- Long 71.7-inch straight shaft without listed folding capability
Good fit if
- You need a 15-inch swath with thick 0.095-inch trimmer line.
- You already own or plan to expand into the EGO 56V battery platform.
- You finish yard trimming work within a 45-minute window.
Skip if
- You require longer continuous work that exceeds a 2.5Ah charge.
- You need an attachment-capable split shaft for multi-tool systems.
Verdict: EGO Power+ 15-Inch 56V Cordless String Trimmer delivers high-voltage brushless cutting with thick 0.095-inch line and quick reloading. It is a solid standalone package for yards manageable within a 45-minute runtime.
WORX 40V 15-Inch Trimmer and Blower Combo
Best for: complete trimming and leaf clearing setups
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 40V
- Cutting Swath
- 15 in
- Power Source
- battery
- Shaft Type
- carbon fiber
- Dimensions
- 12.4 × 8.62 × 38.4 inches
This WORX yard care kit pairs a 15-inch string trimmer with a 530 CFM leaf blower. Powered by a 40V battery system using two PowerShare batteries, the trimmer features a lightweight carbon fiber shaft for improved control across medium to large yards. It suits you if you need both a wide-swath trimmer for clearing overgrown grass and a matching blower for cleanup.
Pros
- 15-inch cutting swath for cutting thick grass across larger areas
- Carbon fiber shaft helps reduce weight and balance the tool
- Includes a 530 CFM leaf blower operating at 57 dB
- Supplied with two batteries and a dual-port charger
Cons
- Sold as a multi-tool combo kit rather than a standalone trimmer
- Total kit shipping weight reaches 20 pounds
Good fit if
- You want a 15-inch string trimmer bundled with a leaf blower.
- You prefer a carbon fiber shaft for balance during yard work.
- You use or plan to use WORX PowerShare battery tools.
Skip if
- You only need a dedicated string trimmer without a blower.
- You prefer a single battery pack rather than pairing two batteries.
Verdict: WORX 40V 15-Inch String Trimmer and Blower Combo delivers a wide 15-inch swath and a lightweight carbon fiber shaft alongside a high-volume blower. It provides a complete 40V setup for cutting grass and clearing debris.
EGO Power+ 15-Inch Telescopic String Trimmer
Best for: EGO 56V owners wanting push-button line loading
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 56V
- Cutting Swath
- 15 in
- Power Source
- Battery
- Motor Type
- Brushless
- Shaft Type
- Telescopic aluminum
View on Amazon: EGO Power+ 15-Inch Telescopic String Trimmer
This cordless trimmer pairs a 15-inch cutting swath with a 56V brushless motor. You get an adjustable telescopic aluminum shaft to adapt the tool to your height. It uses push-button Powerload technology to wind 0.095-inch line automatically into the bump-feed head. Weighing 7.4 pounds without a battery, it suits yard owners who want straightforward line loading and custom shaft length on an existing 56V battery platform.
Pros
- Push-button Powerload system winds replacement line automatically
- Telescopic aluminum shaft adjusts for user height
- Brushless motor with IPX4 weather-resistant construction
- Handles dual 0.095-inch spiral-twist line with bump feed
Cons
- Battery and charger are not included in this package
- Bare-tool weight increases once a 56V battery is mounted
Good fit if
- You already own compatible EGO 56V ARC Lithium batteries.
- You want an adjustable shaft to fit your working height.
- You prefer motorized push-button line winding over manual spooling.
Skip if
- You need an included battery and charger in the box.
- You want a multi-tool attachment-capable drive shaft.
Verdict: EGO Power+ 15-Inch Telescopic String Trimmer delivers automated line loading and adjustable shaft length for operators using the 56V platform. Its brushless motor and 15-inch swath handle everyday grass trimming without manual spool winding.
WORX 15-Inch Brushless 40V String Trimmer
Best for: heavy yard trimming on the WORX battery platform
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 40V
- Cutting Swath
- 15 in
- Motor Type
- brushless
- Line Feed System
- bump feed
- Battery Capacity
- 4.0Ah
The WORX 40V 15-Inch Brushless String Trimmer delivers a wide 15-inch cutting swath powered by a 40V brushless motor and 4.0 Ah batteries. It uses thick 0.095-inch dual-exit line paired with a bump-feed head and variable speed control. At 9.42 pounds, it gives you substantial cutting capability for clearing tall grass and thick weeds if you already use or want the WORX Power Share battery system.
Pros
- 40V brushless motor with variable speed control
- Wide 15-inch cutting swath using 0.095-inch line
- Quick-loading bump-feed spool head
- Includes 4.0 Ah Power Share Pro batteries
Cons
- Total weight is 9.42 pounds
- No multi-tool attachment capability listed
Good fit if
- You need a 15-inch cutting path with heavy 0.095-inch line for dense grass.
- You already own or plan to use tools on the WORX Power Share platform.
- You want variable speed control to balance power and battery runtime.
Skip if
- You need a multi-head trimmer that accepts universal attachments.
- You prefer an ultralight trimmer well under 9 pounds.
Verdict: WORX 40V 15-Inch Brushless String Trimmer provides high-output 40V trimming and durable 0.095-inch line in a full 15-inch swath. It is a capable, battery-efficient choice for maintaining large lawn perimeters without gas.
RYOBI 40V 15-Inch Attachment Capable String Trimmer
Best for: RYOBI 40V users wanting attachment versatility
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 40V
- Cutting Swath
- 15 in.
- Included Battery
- Tool Only
- Shaft Type
- Attachment Capable
- Dimensions
- 40 × 13 × 5 inches
View on Amazon: RYOBI 40V 15-Inch Attachment Capable String Trimmer
This RYOBI string trimmer gives you a 15-inch cutting swath powered by a 40V motor. It features an EXPAND-IT attachment-capable shaft and weighs 11 pounds as a bare tool. With a 40V 4Ah battery, it delivers up to 71 minutes of runtime. It suits you if you already own compatible 40V batteries and want an attachment-ready tool.
Pros
- 15-inch cutting swath covers broad swaths per pass
- EXPAND-IT shaft accepts compatible modular tool heads
- Up to 71 minutes of runtime using a 40V 4Ah battery
- Power output rated higher than a 21cc gas trimmer
Cons
- Bare tool configuration includes no battery or charger
- 11-pound base weight increases once a battery is attached
Good fit if
- You already own compatible RYOBI 40V batteries and chargers.
- You plan to share powerheads across EXPAND-IT attachments.
- You need a 15-inch cutting width for larger trimming jobs.
Skip if
- You need a bundled battery and charger in the box.
- You want a bare tool that weighs under 11 pounds.
Verdict: RYOBI 40V 15-Inch Attachment Capable Trimmer provides modular tool capability and wide-path cutting for users invested in the 40V platform.
DCK 58V 15-Inch Brushless String Trimmer
Best for: versatile high-voltage trimming on a budget
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 58V
- Cutting Swath
- 15 in
- Motor Type
- brushless
- Line Feed System
- bump feed
- Battery Capacity
- 4.0Ah
The DCK 58V 15-Inch Cordless String Trimmer combines a high-voltage brushless motor with a 15-inch cutting swath. You get three speed options topping out at 6000 RPM, along with an attachment-capable split shaft that accepts optional edger and saw heads. Powered by a 4.0Ah battery delivering up to 90 minutes of runtime, this trimmer suits you if you need sustained battery life and multi-tool versatility for trimming thick yard growth.
Pros
- 58V brushless motor with 3 speed settings up to 6000 RPM
- Up to 90 minutes of runtime from the included 4.0Ah battery
- Fast 48-minute battery recharge with active cell-cooling charger
- Attachment-capable power head accepts multiple yard tools
Cons
- Tool body weighs 11.5 pounds without the battery installed
- Expansion attachments must be purchased separately
Good fit if
- You need long continuous runtime up to 90 minutes on a single charge.
- You plan to expand your yard tools using attachment-capable shafts.
Skip if
- You want a lightweight string trimmer weighing under 10 pounds.
- You already invest in a different brand's interchangeable battery ecosystem.
Verdict: DCK 58V 15-Inch Cordless String Trimmer delivers high-voltage power with attachment versatility and fast 48-minute recharging. It offers strong multi-speed performance if you need wide coverage and attachment expandability.
Kobalt 40V Max 15-Inch Straight Shaft Trimmer
Best for: Kobalt 40V platform owners
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 40V Max
- Cutting Swath
- 15 in
- Power Source
- cordless
- Shaft Type
- straight
- Included Battery
- Tool Only
View on Amazon: Kobalt 40V Max 15-Inch Straight Shaft Trimmer
The Kobalt 40V Max 15-Inch Straight Shaft Trimmer gives you a 15-inch cutting swath powered by a 40-volt max cordless platform. It features a straight shaft design measuring 38 inches in length, 12 inches wide, and 5 inches high. This bare-tool setup suits you if you already own compatible Kobalt 40-volt batteries and chargers and need a standard straight-shaft trimmer to maintain lawn edges without buying duplicate power equipment.
Pros
- 15-inch cutting swath
- 40V Max cordless power system
- Straight shaft configuration
Cons
- Battery not included
- Charger not included
Good fit if
- You already own compatible Kobalt 40-volt batteries and chargers.
- You want a straight-shaft trimmer with a 15-inch cutting swath.
Skip if
- You need a bundled kit that includes a battery and charger.
- You prefer a curved-shaft trimmer design.
Verdict: Kobalt 40V Max 15-Inch Straight Shaft Trimmer delivers a 15-inch cutting swath on a 40-volt platform for users with existing compatible batteries. It provides a straight-shaft configuration without adding extra charging equipment to your setup.
Greenworks 24V 15-Inch String Trimmer with 6.0Ah Battery
Best for: Greenworks 24V users needing extended trimming runtime
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 24V
- Cutting Swath
- 15 in
- Power Source
- battery
- Motor Type
- brushless
- Line Feed System
- bump feed
View on Amazon: Greenworks 24V 15-Inch String Trimmer with 6.0Ah Battery
This cordless yard trimmer features a 15-inch cutting path powered by a 24V brushless motor and an included 6.0Ah battery. It feeds 0.080-inch dual twisted line via a bump-feed head and offers a variable-speed trigger for throttle control. The package includes a 65W USB-C charger that can also charge other portable electronics. It suits you if you maintain larger yard areas and want an entry-voltage tool with a high-capacity battery.
Pros
- Brushless motor paired with a 15-inch cutting path
- Includes high-capacity 6.0Ah battery and 65W USB-C charger
- Quick-load bump-feed head reloads 0.080-inch line in under 60 seconds
- Variable speed trigger allows controlled cutting around delicate obstacles
Cons
- Operates on a 24V platform rather than higher-voltage systems
- Does not include an attachment-capable split shaft
Good fit if
- You already use Greenworks 24V platform tools and batteries.
- You want a wide 15-inch cut bundled with a high-capacity 6.0Ah battery.
- You prefer the versatility of a 65W USB-C charging system.
Skip if
- You require a higher-voltage platform such as 40V, 56V, or 58V.
- You want a multi-head attachment system for multiple yard tasks.
Verdict: Greenworks 24V 15-Inch String Trimmer with 6.0Ah Battery delivers a full 15-inch cut on a moderate 24V system by pairing its brushless motor with a generous 6.0Ah pack. It provides convenient USB-C charging and variable speed control for everyday residential trimming.
DongCheng 40V Brushless 15-Inch String Trimmer
Best for: owners of DongCheng 20V battery tools
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 40V
- Cutting Swath
- 15 in
- Power Source
- battery
- Motor Type
- brushless
- Battery Capacity
- 4.0Ah
View on Amazon: DongCheng 40V Brushless 15-Inch String Trimmer
This DongCheng cordless trimmer delivers a 15-inch cutting swath powered by two 20V 4.0Ah batteries running together for 40V output. Its brushless motor spins 0.095-inch line at up to 6,000 RPM. At 7.3 pounds, it gives you up to 45 minutes of low-speed runtime. It suits you if you want a dual-battery tool compatible with an existing 20V battery platform.
Pros
- Brushless motor reaches up to 6,000 RPM
- Uses thick 0.095-inch line across a 15-inch swath
- Runs on two 20V batteries compatible with DongCheng 20V tools
- One-hour recharge time for the 4.0Ah batteries
- Total tool weight is 7.3 pounds
Cons
- Maximum 45-minute runtime is rated only for low speed
- Requires two batteries simultaneously for 40V operation
Good fit if
- You already own DongCheng 20V cordless power tools.
- You need a 15-inch cut using durable 0.095-inch trimmer line.
- You want a balanced 7.3-pound trimmer that recharges in one hour.
Skip if
- You prefer a single dedicated 40V battery rather than dual packs.
- You need high-speed trimming runtime beyond 45 minutes.
Verdict: DongCheng 40V Brushless 15-Inch String Trimmer pairs dual-pack 20V battery versatility with a 6,000 RPM brushless motor. It delivers a full 15-inch cutting path while keeping overall weight down to 7.3 pounds.
EGO Power+ 15-Inch Carbon Fiber String Trimmer
Best for: hassle-free line loading and high-voltage trimming
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 56V
- Cutting Swath
- 15 in
- Power Source
- battery
- Shaft Type
- carbon fiber split shaft
- Line Feed System
- POWERLOAD
View on Amazon: EGO Power+ 15-Inch Carbon Fiber String Trimmer
This cordless string trimmer pairs a 15-inch cutting swath with a 56V power system. It includes a 2.5Ah battery and a charger with a 50-minute recharge time. You get automated POWERLOAD line winding at the push of a button alongside a 7.28-pound build with a carbon fiber split shaft. It suits you if you need a high-voltage trimmer with fast line replacements for routine yard maintenance.
Pros
- POWERLOAD technology automatically winds string via push button
- Carbon fiber split shaft backed by a lifetime warranty
- Includes 56V 2.5Ah battery and fan-cooled charger
- Weighs 7.28 pounds for manageable handling
Cons
- Includes a 2.5Ah battery rather than a higher-capacity pack
- Fixed 15-inch cutting swath lacks adjustable width settings
Good fit if
- You want push-button line reloading without manual spool winding.
- You already use or plan to expand into the EGO 56V battery platform.
- You prioritize a lightweight build with a durable carbon fiber shaft.
Skip if
- You require a higher-capacity battery out of the box for larger properties.
- You prefer an adjustable cutting swath narrower than 15 inches.
Verdict: EGO Power+ 15-Inch Carbon Fiber String Trimmer delivers reliable 56V cutting power with push-button line loading. Its lightweight carbon fiber shaft makes routine trimming manageable without sacrificing durability.
Makita 40V max Brushless 15" String Trimmer
Best for: Makita 40V XGT battery system owners
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 40V max
- Cutting Swath
- 15 in
- Power Source
- Battery
- Motor Type
- Brushless
- Battery Capacity
- 4.0Ah
This cordless string trimmer delivers a 15-inch cutting swath powered by a 40V max outer rotor brushless motor. Automatic Torque Drive Technology shifts speeds between 3,500 and 6,500 RPM based on your workload. It runs up to one hour when paired with a 4.0Ah battery. You will find this bare tool suitable if you already own Makita 40V XGT batteries and need targeted, variable-speed line trimming for medium to large yard edges.
Pros
- Outer rotor brushless motor delivers 3,500 to 6,500 RPM
- Automatic Torque Drive Technology adjusts RPM based on load
- Wide 15-inch cutting swath
- Up to 1 hour of run time with a 4.0Ah battery
Cons
- Battery and charger sold separately as a bare tool
- Incompatible with Makita 18V LXT batteries
Good fit if
- You already own compatible Makita 40V max XGT batteries and chargers.
- You need automatic speed adjustments between 3,500 and 6,500 RPM.
- You want up to one hour of continuous trimming on a 4.0Ah pack.
Skip if
- You need a trimmer that includes a battery and charger in the package.
- You run your yard equipment on the Makita 18V LXT platform.
Verdict: Makita 40V Max XGT 15-Inch Brushless String Trimmer provides dynamic speed adjustment and a 15-inch swath for users already equipped with Makita 40V XGT batteries. It handles tough cutting tasks without including spare power packs or charging gear.
RYOBI 18V Brushless 15-Inch String Trimmer
Best for: 18V users wanting a 15-inch brushless trimmer
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 18V
- Cutting Swath
- 15 in.
- Motor Type
- brushless
- Power Source
- Cordless
- Included Battery
- Tool Only
This cordless string trimmer gives you a 15-inch cutting swath powered by an 18V brushless motor. Because it comes as a bare tool without an included battery or charger, you will need compatible 18V power packs ready to go. The brushless motor design reduces internal friction compared to brushed motors, while the wide cutting width matches larger yard tools. It suits you if you already own compatible 18V batteries.
Pros
- 15-inch cutting swath
- Brushless motor
- 18V cordless operation
Cons
- Sold as bare tool with no battery included
- Charger not included in package
Good fit if
- You already own compatible 18V batteries and a charger.
- You need a 15-inch cutting swath with a brushless motor.
Skip if
- You need a complete kit with a battery and charger included.
- You prefer a higher-voltage platform than 18V.
Verdict: RYOBI 18V Brushless 15-Inch String Trimmer delivers a broad 15-inch cut using an 18V brushless motor. It works best if you already have the required battery and charger on hand.
RYOBI 18V 15-Inch Attachment Capable String Trimmer
Best for: yard work needing multi-attachment versatility
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 18V
- Cutting Swath
- 13 in to 15 in
- Power Source
- battery
- Motor Type
- brushless
- Battery Capacity
- 4.0Ah
View on Amazon: RYOBI 18V 15-Inch Attachment Capable String Trimmer
This cordless string trimmer features an 18V brushless motor and an adjustable 13-inch to 15-inch cutting swath. It runs on an included 4.0 Ah battery that delivers over 40 minutes of runtime. The attachment-capable shaft connects to EXPAND-IT and universal tools, while full throttle engages in under one second. It suits you if you already use 18V tools and want multi-tool versatility with quiet operation.
Pros
- Adjustable cutting width between 13 inches and 15 inches
- Included 4.0 Ah battery provides over 40 minutes of runtime
- Compatible with EXPAND-IT and universal shaft attachments
- Brushless motor reaches full throttle in under 1 second
Cons
- 18V battery platform offers lower voltage than 40V or 56V alternatives
- Total tool length of 73 inches requires ample storage space
Good fit if
- You want to swap between trimmer lines and EXPAND-IT attachments
- You need an adjustable cut width of 13 to 15 inches
- You prefer a tool that runs on an 18V 4.0 Ah battery system
Skip if
- You require a higher-voltage 40V or 56V platform for heavy brush
- You prefer a compact tool under 73 inches long for tight storage
Verdict: RYOBI 18V 15-Inch Attachment Capable String Trimmer pairs an adjustable 13- to 15-inch cutting swath with multi-tool compatibility and 40 minutes of runtime. It delivers solid 18V brushless performance for yard maintenance without gas noise.
EGO Power+ 15-Inch Carbon Fiber String Trimmer
Best for: commercial trimming with backpack battery setups
- Cutting Width
- 15-Inch (what this guide is about)
- Voltage
- 56-Volt
- Cutting Swath
- 15”
- Power Source
- battery
- Motor Type
- brushless
- Shaft Type
- carbon fiber
View on Amazon: EGO Power+ 15-Inch Carbon Fiber String Trimmer
The EGO Power+ 15-Inch Carbon Fiber String Trimmer pairs a 56-volt brushless motor running at 5,700 RPM with a durable carbon fiber shaft. It uses a 15-inch cutting swath and 0.095-inch line fed through a bump-feed head. Built with weather-resistant construction, it connects to commercial backpack power options. This design suits you if you need heavy-duty cutting specs and long-reach durability.
Pros
- Carbon fiber shaft with a lifetime warranty
- High-efficiency 56-volt brushless motor reaching 5,700 RPM
- Accommodates thick 0.095-inch line with a bump-feed head
- Weather-resistant construction
Cons
- Total tool weight is 12.1 pounds
- Requires commercial backpack battery or adapter link
Good fit if
- You need a carbon fiber shaft with a lifetime warranty.
- You want a 5,700 RPM motor handling thick 0.095-inch line.
- You use EGO Commercial Series backpack power systems.
Skip if
- You want a lightweight string trimmer under 12 pounds.
- You do not use EGO commercial backpack batteries.
Verdict: EGO Power+ 15-Inch Carbon Fiber String Trimmer pairs a 5,700 RPM brushless motor with a durable shaft for heavy workloads. It functions strictly with EGO commercial backpack battery hardware.
Specifications side by side
| Spec | EGO Power+ 15-Inch Cordless String Trimmer | WORX 40V 15-Inch Trimmer and Blower Combo | EGO Power+ 15-Inch Telescopic String Trimmer | WORX 15-Inch Brushless 40V String Trimmer | RYOBI 40V 15-Inch Attachment Capable String Trimmer | DCK 58V 15-Inch Brushless String Trimmer | Kobalt 40V Max 15-Inch Straight Shaft Trimmer | Greenworks 24V 15-Inch String Trimmer with 6.0Ah Battery | DongCheng 40V Brushless 15-Inch String Trimmer | EGO Power+ 15-Inch Carbon Fiber String Trimmer | Makita 40V max Brushless 15" String Trimmer | RYOBI 18V Brushless 15-Inch String Trimmer | RYOBI 18V 15-Inch Attachment Capable String Trimmer | EGO Power+ 15-Inch Carbon Fiber String Trimmer |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Voltage | 56V | 40V | 56V | 40V | 40V | 58V | 40V Max | 24V | 40V | 56V | 40V max | 18V | 18V | 56-Volt |
| Cutting Swath | 15-inch | 15 in | 15 in | 15 in | 15 in. | 15 in | 15 in | 15 in | 15 in | 15 in | 15 in | 15 in. | 13 in to 15 in | 15” |
| Power Source | battery | battery | Battery | not specified | not specified | not specified | cordless | battery | battery | battery | Battery | not specified | battery | battery |
| Motor Type | brushless | not specified | Brushless | brushless | not specified | brushless | not specified | brushless | brushless | not specified | Brushless | brushless | brushless | brushless |
| Shaft Type | not specified | carbon fiber | Telescopic aluminum | not specified | not specified | not specified | straight | not specified | not specified | carbon fiber split shaft | not specified | not specified | not specified | carbon fiber |
| Line Feed System | Rapid Reload | not specified | Bump feed | bump feed | not specified | bump feed | not specified | bump feed | not specified | POWERLOAD | not specified | not specified | not specified | bump feed |
| Battery Capacity | 2.5Ah | not specified | 2.5Ah | 4.0Ah | not specified | 4.0Ah | not specified | 6.0Ah | 4.0Ah | 2.5Ah | 4.0Ah | not specified | 4.0Ah | not specified |
| Cutting Width | 15-Inch | 15-Inch | 15-Inch | 15-Inch | 15-Inch | 15-Inch | 15-Inch | 15-Inch | 15-Inch | 15-Inch | 15-Inch | 15-Inch | 15-Inch | 15-Inch |
| Included Battery | not specified | not specified | not specified | not specified | Tool Only | not specified | Tool Only | Battery and Charger Included | not specified | not specified | Tool Only | Tool Only | not specified | not specified |
| Dimensions | 71.7 × 12.6 × 5 inches | 12.4 × 8.62 × 38.4 inches | 64.9 × 12.6 × 9.84 inches | 68.3 × 12.8 × 10.7 inches | 40 × 13 × 5 inches | 5 × 5 × 5 inches | 38 × 12 × 5 inches | 59.1 × 10.8 × 5 inches | 40 × 13.3 × 5 inches | 71.7 × 12.6 × 9.8 inches | 7.09 × 72.4 × 8.9 inches | 15 × 15 × 5 inches | 73 × 12 × 5 inches | 71.8 × 7.87 × 4.33 inches |
| Weight | 7.4 pounds | 20 pounds | 7.4 pounds | 9.42 pounds | 11 pounds | 26.5 pounds | not specified | not specified | 7.3 pounds | 7.28 pounds | not specified | not specified | not specified | 12.1 pounds |
| Size | 15" | not specified | 15in Powerload/Telescopic NO BATTERY/CHARGER | 15" | RY40205 | 15" | 15-in | New 15" (Battery Included) | 15" | 15" | 15" | not specified | 15 in | not specified |
| Color | Black | Black and Orange | Black | Black and Orange | GREEN | RED | Multicolor | Green | Blue | Black | Teal | Yellow | Green | Black |
| Model | ST1502SA | WP925 | ST1510T | WG185 | RY40205 | KDPH581BDM+KDST151 | not specified | ST1502 | DCPH401+DCST151(EA-04)-01 | ST1521S | GRU01Z | P20019BTLVNM | PBLST01K | STX3800 |
If you compare audio hardware instead of lawn tools, specs for the best 15 Inch subwoofers list power ratings.
Key Specs for Choosing a Trimmer
-
Check motor type
Brushless motors offer better efficiency and longer life than brushed versions. Most models in this guide feature brushless drives, including the EGO Power+ and DongCheng options. This technology reduces friction and heat, allowing the tool to run cooler during extended use. If you plan to trim frequently, a brushless motor ensures consistent power delivery. The WORX 40V Brushless model also highlights this feature for heavy-duty yard work. Always verify the motor type in the attributes to ensure you are getting the most durable option available for your needs.
-
Compare voltage levels
Voltage determines the raw power output of your trimmer. Higher voltage systems like 56V or 58V, found in EGO and DCK models, provide more torque for thick weeds. Lower voltage options like 18V or 24V, such as those from RYOBI and Greenworks, are lighter and sufficient for light grass. Choose a voltage that matches your existing battery ecosystem. This avoids buying extra chargers and ensures you can swap batteries between tools. The DCK 58V model offers high power for those needing extra cutting force.
-
Review weight specs
Weight affects how fatiguing a trimmer feels during use. Lighter models, like the EGO Power+ Carbon Fiber at 7.28 pounds, are easier to maneuver for long periods. Heavier units, such as the DCK model at 26.5 pounds, may require more effort to hold steady. Consider your physical strength and the size of your yard. A lighter trimmer reduces strain on your wrists and shoulders. Check the weight in the specs section to find a balance between power and comfort. The WORX combo kit is heavier due to the blower attachment, so factor that in.
-
Look at battery capacity
Amp-hour (Ah) ratings indicate how long the battery lasts. Higher Ah values, like the 6.0 Ah pack in the Greenworks model, provide longer runtime than smaller 2.5 Ah batteries. If you have a large yard, a higher capacity battery reduces the need for frequent recharging. The WORX 40V Brushless model includes a 4.0 Ah battery for extended use. Some models are tool-only, so you must purchase batteries separately. Check the attributes to see if a battery is included or if you need to buy one for your first use.
-
Assess shaft type
Shaft design impacts comfort and versatility. Straight shafts, like those on the Kobalt and EGO models, offer better balance and leverage for edging. Curved shafts are often lighter and easier to handle for simple trimming. Telescopic shafts, such as the EGO Power+ Telescopic model, allow you to adjust the length for different heights. Some models are attachment-capable, like the RYOBI 40V and 18V options, letting you add other tools to the same shaft. Choose a shaft type that matches your preferred working style and body size.
Frequently asked questions
Are 15-inch string trimmers powerful enough for thick weeds?
Yes, many models handle dense vegetation effectively. The EGO Power+ 15-Inch Cordless String Trimmer uses thick 0.095-inch line and a 56V brushless motor for heavy trimming. The WORX 40V Brushless model also offers high-output power with durable 0.095-inch line. These specs allow you to cut through tough grass without stalling.
Which 15-inch trimmer is the lightest to use?
The DongCheng 40V Brushless 15-Inch String Trimmer weighs 7.3 pounds. The EGO Power+ 15-Inch Carbon Fiber String Trimmer is slightly heavier at 7.28 pounds. The EGO Power+ 15-Inch Cordless String Trimmer weighs 7.4 pounds. These lightweight designs reduce fatigue during extended trimming sessions around your yard perimeter.
Do any 15-inch trimmers include batteries and chargers?
The Greenworks 24V 15-Inch String Trimmer comes with a 6.0Ah battery and charger included. Most other models, like the RYOBI 18V Brushless and Kobalt 40V Max, are sold as tool-only units. You must check the included battery status before purchasing if you do not already own compatible power packs.
Can I attach other tools to a 15-inch string trimmer?
Yes, several models support attachment versatility. The RYOBI 40V 15-Inch Attachment Capable String Trimmer allows you to connect various yard tools. The RYOBI 18V 15-Inch Attachment Capable model also features multi-tool compatibility. This modular capability lets you expand your yard work setup without buying separate engines.
Which trimmer has the longest shaft for tall grass?
The EGO Power+ 15-Inch Cordless String Trimmer has a length of 71.7 inches. The RYOBI 18V 15-Inch Attachment Capable String Trimmer is 73 inches long. The Makita 40V max Brushless model is 72.4 inches in length. These extended shaft lengths help you maintain a comfortable standing posture while trimming.
Is there a 15-inch trimmer with telescopic features?
The EGO Power+ 15-Inch Telescopic String Trimmer features an adjustable shaft length. It also includes automated line loading for quick adjustments. This model suits operators who want to customize the reach for different tasks. It operates on the 56V platform and handles everyday grass trimming efficiently.