15-Inch vs 16-Inch String Trimmers in 2026: Key Differences
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You are comparing a 15-Inch vs 16-inch string trimmer from EGO Power+. Both units use 56V brushless motors and professional-grade 0.095-inch line. The main difference is the cutting swath. One is a complete standalone tool with a 2.5Ah battery. The other is a 16-inch attachment for the Multi-Head system. You need to decide if you want an all-in-one device or a modular component.
Key differences
| Aspect | EGO Power+ 15-Inch Cordless String Trimmer | EGO Power+ 16-Inch Carbon Fiber Trimmer Attachment |
|---|---|---|
| Cutting Width | 15-inch | 16-inch |
| Form Factor | Complete standalone trimmer | Attachment for Multi-Head system |
| Shaft Material | Not listed | Carbon fiber |
| Battery Included | 2.5Ah battery | Not listed |
| Weight | 7.4 pounds | 3.4 pounds |
Which one should you choose?
Choose EGO Power+ 15-Inch Cordless String Trimmer if
- You want a ready-to-use tool with an included battery and charger
- You prefer a lighter overall package for quick yard cleanups
- You need up to 45 minutes of runtime on a single charge
Choose EGO Power+ 16-Inch Carbon Fiber Trimmer Attachment if
- You already own an EGO POWER+ Multi-Head power head
- You want the wider 16-inch cutting swath for faster work
- You prefer a lightweight carbon fiber shaft for reduced fatigue
Verdict: Choose the 15-inch model if you need a complete, standalone solution with a battery included. Pick the 16-inch attachment if you already have a compatible power head and want a wider cut with a lighter carbon fiber shaft.
15-Inch vs 16-Inch Trimmer Specs
Cutting Width
The primary difference lies in the cutting swath. The EGO Power+ 15-Inch Cordless String Trimmer offers a 15-inch cutting width. This narrower path requires more overlapping passes to cover the same area. The EGO Power+ 16-Inch Carbon Fiber Trimmer Attachment provides a 16-inch cutting swath. The extra inch covers more ground per pass. This can reduce the total time needed for larger yards. Both tools use professional-grade 0.095-inch line. The wider option is generally more efficient for open areas. You should choose based on how much ground you need to cover.
System Type
Product A is a complete, standalone unit. It includes the motor, battery, charger, and shaft in one package. You can use it immediately out of the box. Product B is an attachment. It requires a separate EGO Multi-Head Power Head to function. This makes it part of a modular system. If you already own a compatible power head, this attachment adds value. If you need a standalone tool, Product A is the only choice. The attachment option saves storage space if you already have the power unit.
Weight
Weight affects user fatigue during extended use. The EGO Power+ 15-Inch Cordless String Trimmer weighs 7.4 pounds. This includes the motor, battery, and shaft. The EGO Power+ 16-Inch Carbon Fiber Trimmer Attachment weighs only 3.4 pounds. This lighter weight is due to the carbon fiber shaft and lack of a motor. However, the attachment must be paired with a power head. The total weight depends on the chosen power head and battery. For pure attachment weight, the 16-inch model is significantly lighter.
Runtime
Runtime determines how long you can work before recharging. The EGO Power+ 15-Inch Cordless String Trimmer delivers up to 45 minutes of runtime. This is based on the included 2.5Ah battery. The EGO Power+ 16-Inch Carbon Fiber Trimmer Attachment does not list a specific runtime. Runtime depends entirely on the power head and battery used with it. If you use a larger battery, such as a 5.0Ah, you may get longer runtime. Without a specific battery included, direct runtime comparison is not possible.
Line Feed System
Both tools use advanced line feed systems for convenience. The 15-inch model features a Rapid Reload head. You load new line quickly by aligning arrows and twisting. The 16-inch attachment uses POWERLOAD technology. This allows you to feed line by pushing a button. However, POWERLOAD is only compatible with the PH1420 power head. If you use the PH1400 power head, the attachment uses Rapid Reload instead. Both systems aim to reduce downtime. The button-feed option is faster if you have the compatible power head.
Which EGO Trimmer Suits Your Needs
Users wanting a standalone, ready-to-use tool
This complete unit includes a 2.5Ah battery and charger. You get up to 45 minutes of runtime on a single charge. The variable speed motor lets you adjust power to the task. It weighs 7.4 pounds and features a 5-year tool warranty. You do not need to buy a separate power head to start trimming.
Owners of the EGO Multi-Head system
This is a 16-inch attachment for the PH1400 or PH1420 power heads. It offers a wider 16-inch cutting swath for faster coverage. The carbon fiber shaft is lightweight at 3.4 pounds. It includes POWERLOAD line feed technology for quick line extension. You must purchase the compatible power head separately to use this attachment.
Buyers prioritizing a wider cutting path
The 16-inch cutting width covers more ground per pass than the 15-inch model. This reduces the number of overlapping passes needed for large areas. The IPX4 weather-resistant construction protects the internal components. The dual line spiral-twist 0.095-inch line provides durable cutting performance for professional-grade yard cleanup tasks.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | EGO Power+ 15-Inch Cordless String Trimmer | small yards and precise trimming tasks | Check price of EGO Power+ 15-Inch Cordless String Trimmer on Amazon |
| 2 | EGO Power+ 16-Inch Carbon Fiber Trimmer Attachment | EGO multi-head owners needing wide 16-inch trimming | Check price of EGO Power+ 16-Inch Carbon Fiber Trimmer Attachment on Amazon |
The products compared
EGO Power+ 15-Inch Cordless String Trimmer
Best for: small yards and precise trimming tasks
- 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
View on Amazon: EGO Power+ 15-Inch Cordless String Trimmer Affiliate link
This EGO 15-inch string trimmer uses a 56V brushless motor and a 2.5Ah battery. It offers up to 45 minutes of runtime and charges in 50 minutes. The 15-inch cutting swath handles yard cleanups with 0.095-inch line. Its variable speed head matches your working situation. It fits users who need a lighter, more manageable tool for smaller lawns.
Pros
- 15-inch cutting swath for precise trimming
- Brushless motor for low vibration and reliability
- Rapid Reload head for quick line changes
- Variable speed control for different tasks
- 5-year tool warranty included
Cons
- Smaller 15-inch cutting width compared to 16-inch models
- Included 2.5Ah battery offers less runtime than higher-capacity options
- Heavier at 7.4 pounds than some lighter competitors
Good fit if
- You have a small to medium lawn under 1/4 acre
- You prefer a lighter tool for extended use
- You want rapid reloading to minimize downtime
Skip if
- You need to cut a wide swath quickly over large areas
- You require longer runtime without swapping batteries
- You prefer a lighter weight tool under 6 pounds
Verdict: EGO 15-Inch Cordless Trimmer suits users with smaller yards who value maneuverability and quick line reloading over maximum cutting width. It is a practical choice for precise edge work and light clearing.
EGO Power+ 16-Inch Carbon Fiber Trimmer Attachment
Best for: EGO multi-head owners needing wide 16-inch trimming
- Cutting Width
- 16-Inch (what this guide is about)
- Cutting Swath
- 16 in.
- Shaft Type
- carbon fiber
- Line Feed System
- POWERLOAD
- Dimensions
- 39.5 × 7.36 × 5 inches
- Weight
- 3.4 pounds
View on Amazon: EGO Power+ 16-Inch Carbon Fiber Trimmer Attachment Affiliate link
This tool is an attachment for EGO Multi-Head systems. You get a wide 16-inch cutting swath and a lightweight 3.4-pound carbon fiber shaft. It uses 0.095-inch spiral-twist dual line and has IPX4 weather resistance. It suits you if you already own an EGO power head and need wider cutting coverage than a standard 15-inch trimmer.
Pros
- 16-inch cutting swath covers more width per pass
- Carbon fiber shaft weighs 3.4 pounds with lifetime warranty
- POWERLOAD button feeds line automatically on PH1420 heads
- IPX4-rated weather-resistant build
Cons
- Requires a separate EGO power head to function
- Push-button POWERLOAD feature works only with the PH1420 model
Good fit if
- You already own a compatible EGO PH1400 or PH1420 power head.
- You want a 16-inch cutting swath paired with 0.095-inch line.
- You prefer a lightweight 3.4-pound carbon fiber shaft.
Skip if
- You need a standalone trimmer out of the box.
- You own a PH1400 power head and want push-button line feeding.
Verdict: EGO Power+ 16-Inch Carbon Fiber Trimmer Attachment expands your existing multi-head system with a wide 16-inch swath and 0.095-inch line. It suits yard owners seeking push-button loading on compatible EGO power bases without added shaft weight.
Specifications side by side
| Spec | EGO Power+ 15-Inch Cordless String Trimmer | EGO Power+ 16-Inch Carbon Fiber Trimmer Attachment |
|---|---|---|
| Voltage | 56V | not stated |
| Cutting Swath | 15-inch | 16 in. |
| Power Source | battery | not stated |
| Motor Type | brushless | not stated |
| Shaft Type | not stated | carbon fiber |
| Line Feed System | Rapid Reload | POWERLOAD |
| Battery Capacity | 2.5Ah | not stated |
| Cutting Width | 15-Inch | 16-Inch |
| Dimensions | 71.7 × 12.6 × 5 inches | 39.5 × 7.36 × 5 inches |
| Weight | 7.4 pounds | 3.4 pounds |
| Size | 15" | String Trimmer Attachment |
| Color | Black | black |
| Model | ST1502SA | STA1600 |
Frequently asked questions
Is the 15-inch trimmer better for tight spaces?
Yes. The 15-inch model is lighter at 7.4 pounds and narrower in width. This makes it easier to maneuver around obstacles. It is ideal for precise edge work and small yards where a wider head would be cumbersome.
Can I use the 16-inch attachment with any trimmer?
No. The 16-inch unit is a dedicated attachment for EGO multi-head systems. It connects to compatible EGO power bases. It is not a standalone tool. You must already own a compatible base to use this 16-inch head.
Which option provides more runtime on a single charge?
The 15-inch standalone trimmer includes a 2.5 Ah battery. This battery supports up to 45 minutes of runtime. The 16-inch attachment does not include a battery. It relies on the power base you already own for energy.
Does the 16-inch attachment add significant weight?
It adds less weight than a full tool. The attachment itself weighs only 3.4 pounds. This keeps the overall system lighter than adding a separate motorized unit. It is designed to expand your existing setup without adding heavy shaft weight.
What line size do both options use?
Both options use 0.095-inch line. This is a standard professional-grade size. It balances durability and cutting performance. You can find replacement line easily for both the standalone 15-inch model and the 16-inch attachment head.
Is the 15-inch model suitable for large yards?
It is less efficient for large areas. The 15-inch cutting width requires more overlapping passes to cover the same ground. The 16-inch attachment offers a wider swath. It covers more ground per pass, making it faster for larger spaces.
How long is the 15-inch trimmer shaft?
The total length is 71.7 inches. This allows for comfortable standing operation. The handle height is adjustable to fit your reach. It is designed to reduce bending during extended trimming sessions.