Search  for anything...
EGO Power+

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 3,759 reviews
Condition: New
Checking for product changes
$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, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. 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

30-day refund/replacement

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 Wednesday, Jul 2
Order within 4 hours and 10 minutes
Available payment plans shown during checkout

Recently Viewed

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


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: Wednesday, Jul 2

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.

Similar Products

Top Amazon Reviews

    • 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
    • Best equipment purchase ever!
Style: w/2.5Ah Battery, Powerload
These are awesome! I was a sceptic about electric. I own allot of gas equipment. We have over four acres of land that needs clearing every year by our fire dept. In our town in Ca the fire dept puts a $10,000 lean on your place if they dont like the way you fid weed abatement! I bought two Ego power 15” string trimmers with carbon handles and 2 Ego power 5 amp hr battery's. They worked awesome. Im impressed. They are tuff! To spool new cutting line is so easy and high tech. Manual is not good at all. Just cut a 14’ length of cutting line. Stick it in one hole on trimming head where line comes out, feed it in until it comes out other hole. Then pull both ends of cutting line so they are both 7feet from string trimmer head. Make them equal length 7’ on each side of trimmer spool. Then with battery in trimmer push green button on back of trimmer spool head ( Not power trigger) . And click click click! It auto spools the cutting line. Let go of green button when 7 inches are left. The manual is a joke! Not good at all. But the equipment is awesome. I bought two of these. And a blower, and the ego power head with a brush cutter attachment ANF a pole saw attachment. Then i bought the Ego Power 16”? Chain saw. This is the BEST equipment purchase i have made in years. It cost a arm and leg for 5amp Hr battery's, but after that you’re all good to go. I use the 2.5amp hr battery's while 5am hrs are charging. I love yard work again! And now more $500 repairs, on my gas equipment yearly, and gas, noise, smell of exhaust. These do better and zero maintenance. And light to carry and hold. Just buy these! They are awesome. Dont loose the allen wrench and screws that come with it. ... show more
Reviewed in the United States on May 5, 2025 by Tiny Girl
    • 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
    • Amazing products
Style: w/Leaf Blower + 4.0Ah Battery
Review Image by Austin Brewer Austin Brewer
They are both great, just wish I would of known that this weedeater spins Clockwise which is completely opposite to what I've used for the last 20 years! It's actually quite a pain in the butt when you walk with it as it sprays all debris right into you and your face....wish EGO would of done better with this, but hey sometimes you have to change directions in life. But the actual power of both the weedeater and blower are AMAZING. I have 3 batteries (7.5,5.0,4.0) and I mow less then an acre of grass. I don't even need to touch the 4.0 battery with mowing, weedeating and blowing everything. Honestly I'm super happy I bought these and already have a List on Amazon with just EGO products and accessories lol. Again just beware this weedeater doesn't spin counterclockwise and apparently there is a certain version that can be reversed......do your research if this is a problem (wish I did lol) Overall the durability of the products and the speed at which I can use them is so much better then gas. The noise level at which your putting out is super QUIET.....I mow close to dark now with the LED lights too and I guarantee my next door neighbor doesn't even know I'm mowing lol. ... show more
Reviewed in the United States on May 18, 2025 by Austin Brewer Austin Brewer
    • Powerful!
Style: w/Leaf Blower + 2.5Ah Battery
I wasn’t sure if these would be as powerful as gas powered. Just moved into our first home and wanted to get something that would fit our needs. These were a great purchase and very powerful! Battery is great , they don’t make a whole ton of sound , quality is durable ! I would recommend to anyone .
Reviewed in the United States on June 8, 2025 by Jovi

Can't find a product?

Find it on Amazon first, then paste the link below.