Search  for anything...

EGO POWER+ String Trimmer, Battery Powered, 15" Trimmer for Weeds and Grass with POWERLOAD and Carbon Fiber Split Shaft, Includes 56V 2.5Ah Battery and Charger - ST1521S

  • Based on 3,824 reviews
Condition: New
Checking for the best price...
$249.00 Why this price?

Buy Now, Pay Later


As low as $41.50 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Nov 17
Order within 13 hours and 57 minutes
Available payment plans shown during checkout

Style: w/2.5Ah Battery, Powerload


Features

  • POWERLOAD Head, load your line, push a button and go
  • 15 cutting swath
  • Dual-feed spiral twist 0.095in. Line
  • High-efficiency brushless motor
  • Variable speed control
  • Power source type: Battery Powered

Description

The world's first String Trimmer with POWERLOAD Technology. This patent pending technology solves for one of the biggest pain points of string trimmers, POWERLOAD technology automatically winds your trimmer. Replacing your string line is as easy as feeding the line into the head and pressing a button! The EGO POWER+ 15" POWERLOAD String Trimmer has a Carbon Fiber shaft that is stronger than any other string trimmer shaft on the market today. The shaft is equipped with a lifetime warranty so the strength and durability is guaranteed to last forever! This revolutionary trimmer is also built with a hi-efficiency brushless motor, bump feed line advance, .095" professional cutting line, and is compatible with all EGO ARC Lithium batteries to maximize the convenience of cordless and deliver Power Beyond Belief.

Brand: EGO Power+


Power Source: Battery Powered


Color: Black


Item Weight: 7.28 Pounds


Cutting Width: 14 Inches


Brand: EGO Power+


Power Source: Battery Powered


Color: Black


Item Weight: 7.28 Pounds


Cutting Width: 14 Inches


Product Dimensions: 71.7"L x 12.6"W


Speed: 5800 RPM


Assembly Required: Yes


Number of Batteries: 1 Lithium Polymer batteries required. (included)


Pattern: Trimmer


Global Trade Identification Number:


Style: w/2.5Ah Battery, Powerload


Number of Items: 1


UPC: 692042008238


Size: 15"


Item Weight: 7.28 pounds


Manufacturer: EGO Power+


Country of Origin: China


Item model number: ST1521S


Batteries: 1 Lithium Polymer batteries required. (included)


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Best Trimmer
Style: w/2.5Ah Battery, Powerload
This is a powerful trimmer and it's made very well. When fully charged the battery has enough power to do all the trimming. If not fully charged I have to stop in the middle to recharge it. What is great is it starts easy and does not pollute, no gas/oil mixture. No pulling your arm apart to get it started. Just a flick of the switch and you're on the way. The BEST thing is the installation of the trimmer wire is automatic! Just cut a piece to 13 feet long, thread it though the spool and hit the wind button. I LOVE IT. The only drawback for me is the trimmer is a bit on the heavy side. The handle has to be adjusted in a way that the trimmer is balanced because the battery is fairly heavy. So between the weight and the need to balance its is a tiring for me. On the whole, it makes trimming much more pleasant than using a gas powered trimmer. ... show more
Reviewed in the United States on June 1, 2025 by Aloyuishus

  • Incredible Deal – EGO Never Disappoints!
Style: w/Leaf Blower + 4.0Ah Battery
We picked up the EGO POWER+ Combo (Cordless Trimmer and 670 CFM Blower) for a fantastic price and couldn’t be happier with the purchase. We've already got nearly the full line of EGO equipment, and this combo just adds to why we love the brand so much. The 15" trimmer with POWERLOAD makes line loading effortless, and it cuts through weeds and grass like a pro. The blower is incredibly powerful—670 CFM is no joke—and it handles yard cleanup with ease. The included 56V 4.0Ah battery and charger are great additions and offer plenty of runtime for our needs. Overall, this is an incredible value for high-quality, reliable equipment. EGO continues to deliver with performance, ease of use, and innovation. ... show more
Reviewed in the United States on May 7, 2025 by Scott

  • Ego makes quality stuff.
Style: w/2.5Ah Battery, Powerload
I'm a firm believer that if you can decide on a specific brand of battery operated equipment, try hard to buy just that brand so you may interchange batteries and chargers where permitted by manufacturer. With this said, I stick with 2 brands that I've had excellent luck with and cover different areas of use mostly, just a little overlap. The 2 brands (I have no deal with these brands, just like them because of my experience with them) I believe in are DeWalt and Ego. In this case my latest purchase was this weedtrimmer. It has great features and I am very impressed with the power it has and how long it operates on a charge. My favorite feature is filling up the spool with trimmer line. Ego has made this process one of if not the easiest to do in the industry! It holds a lot of line and being battery operated, is nice and quiet. I live right along side a field and every once and a while I need to cut it back some to not interfere with my cutting of the grass in my own yard. When doing this, every once in awhile you run across a small whip of a start of a tree. Obviously the line isn't going to cut through this but it also doesn't stop the Ego. It just hammers away til I backoff and cut around these saps. This Ego unit is on the line between homeowner and commercial quality. It's highend homeowner and takes the same battery and charger that I already have for other Ego products like the Leaf Blower for example. Even if I would get a Ego 2 Stage Snow Blower some day, they all take the same battery and charger. So if you have a large project going on, and a battery runs out... you have more charged batteries to grab and go on with. In my opinion, one of the greatest features of sticking with a brand. In my own opinion I believe you get excellent value for your money buying these 2 brands. Oh, and as far as durability, my leaf blower was the first Ego purchase I made years ago and I'm still using it and the battery and charger that came with it! ... show more
Reviewed in the United States on April 29, 2025 by YooperNick

  • Very capable, comparable to gas powered tools without the fuel hassle
Style: w/Leaf Blower + 2.5Ah Battery
This is a combo of a string trimmer and a blower. The string trimmer works very well and has plenty of power to trim the grass around the house and to use as an edger when turned upside down. As an edger it uses a lot of line. Feeding the line is very easy but I went through all the line it came with just using it twice on my yard which is about 1/3 acre. That said, I still prefer it much over the gas powered one I used to have. No more worrying about the gas/oil leaving stains on clothing or having the fuel lines rot over time. This one also starts every time. Reloading line is a bit tricky but after doing it a couple times it worked well. Blower is amazingly strong, especially in boost mode. In that mode, it’s stronger than my gas blower. It is also well balanced and light. What surprised me the most is the battery life. I used the same 2Ah battery for both trimmer and blower and after using it for about an hour it finally ran out. That is more than I usually need. Battery also seems to charge pretty quickly. Overall, I would recommend this pair. I went with Ego because I am thinking about getting an electric mower as well next year and ego seems to be the best choice for me. I wanted to make sure I get everything from the same brand so I can interchange the batteries. ... show more
Reviewed in the United States on September 25, 2023 by Daniel B

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...