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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 3,824 reviews
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Availability: In Stock.
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Arrives Thursday, Apr 30
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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: 7.3 Pounds


Cutting Width: 14 Inches


Power Source: Battery Powered


Cutting width: 14 Inches


Speed: 5800 RPM


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


Item Weight: 7.3 Pounds


Item Dimensions L x W: 71.7"L x 12.6"W


Size: 15"


Color: Black


Pattern: Trimmer


Style Name: w/2.5Ah Battery, Powerload


Required Assembly: Yes


Brand Name: EGO Power+


Model Number: ST1521S


Global Trade Identification Number:


Number of Items: 1


UPC: 692042008238


Manufacturer Warranty Description: 5 Year Limited Warranty


Manufacturer Part Number: ST1521S


Item Type Name: 2.5Ah Battery and Charger Included


Unit Count: 1.0 Count


Included Components: String Trimmer, 56V 2.5Ah battery, 56V standard charger, Cutting Line, Hex Wrench


Manufacturer: EGO Power+


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Apr 30

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

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View our full returns policy here.

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Top Amazon Reviews

    • This Machine is a BEAST
Style: w/2.5Ah Battery, Powerload
September 22, 2024 I assembled this machine on April 13, 2024 and started using it shortly thereafter. I bought it to replace my Echo SRM-225 which I have used since June 2013. I bought this particular EGO model after reading great reviews about it. Both devices are used solely at my home. As this is my first battery powered piece of lawn equipment, I wanted to see how it handled several concerns that I had upon making the switch from gasolene to battery power, the first being just how it handled generally. I have to say that it handles very well. It is noticeably lighter than my old Echo and significantly quieter. It does a very good job of cutting the grass in either standard trimming such as along a fence line as well as along mulched areas where I have to hold it upside down. As there are more mulched areas than regular in my yard this second position is important to me and the EGO does very well in both areas. I have to say however that the inverted position is a little more cumbersome to me, but not a deal breaker. The second concern was how the EGO would handle a roughly 920 square foot area beyond the back boundary of my yard that contains weeds alongside a farm field. I go back there several times each summer to clean up the area. The EGO is excellent in this wild service actually better than my gas-powered Echo. This machine really goes after it. There’s more than enough power. It did have some problems with some big (3/8” diameter) Queen Ann’s Lace that I encountered on my most recent time in the field, but for the most part it was up to the task. This is the service where it earned the “BEAST” moniker. The third concern dealt with the auto-feed feature of replacing the line. I’ve only had to do so once so far, but it worked slicker than snot. So much easier to replace than my old Echo ever was. My final concern was battery charge life. There’s more than enough charge in the battery to do my whole yard, including the wild area in the back to do everything on a single charge. It also only takes a short time to fully re-charge. I always do the trimming before running the mowers so when done I put the battery on charge while mowing. It’s always fully ready to go by the time I’m done mowing. I don’t need to keep it on charge when away from the garage. The battery holds the charge very well too. We’ve been having a drought, particularly over the last month or so and I’ve let it set for about 6 weeks. When I used it this past week there was more than enough charge to do the whole yard with no problem. I’m extremely happy with this machine. ... show more
Reviewed in the United States on September 23, 2024 by Maintenance Engineer
    • 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
    • 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

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