EGO Carbon Fiber String Trimmer String Trimmer Reviews & Edgers

EGO Carbon Fiber String Trimmer Review

Last September, we had the pleasure of talking with Kyle Selph from EGO at our ProToolReviews home office. We always look forward to these visits for a few reasons. For one thing, Kyle is not only the consummate gentleman and conversationalist, but more importantly, he always brings us new EGO products to take a look at and play with. As EGO has spent the last 10 years making and refining their brand of highly functional and innovative cordless outdoor power equipment, we have a tendency to get excited about these visits. This trip was no exception, and to be honest, this one went above and beyond…because this trip, Kyle came to show off a new EGO Carbon Fiber String Trimmer with an Auto-Feeding Powerload Head.


Cordless trimmers have steadily improved over the years with their power and runtimes. While the new model was no slouch in these areas, it seems clear that EGO aimed for improvement in some different key areas. What we got really excited about revolved around EGO’s attention to improving the user experience, as well as the durability of the product. What were the “things to write home about” with this new product? A carbon fiber shaft and an auto-feeding Powerload trimmer head.

Talkin’ Shaft

One of the notable features that we’re super stoked about is the carbon fiber shaft. EGO sees shift users away from a traditional shaft and into the world of the more lightweight, strong, and durable carbon fiber. The benefits of a lighter and tougher shaft ought to be obvious to anyone who has ever picked up a string trimmer or pole saw. A near-impossible-to-break shaft that doesn’t weigh so much that it causes me to throw my back out when I use it for an hour at a time? Yes, please. In fact, carbon fiber is so durable that EGO puts a lifetime warranty on the shaft.

EGO Carbon Fiber String Trimmer

However, weight distribution plays a big part in how comfortable the string trimmer actually is. The feather-light shaft doesn’t mean a whole lot if the weight distribution of the head and the battery is out of whack. If the trimmer is unbalanced, you wind up having to physically overcompensate by keeping the heavy side lifted up. Thankfully, EGO addresses this too. The handle placement provides a central point that balances the heavier parts really well. We put the EGO Carbon Fiber String Trimmer through its paces for over an hour, and none of us needed a bottle of Tylenol or a stiff drink afterward.EGO Carbon Fiber String Trimmer

Auto-Feed Me, Seymour

The other really notable feature of the new EGO Carbon Fiber String Trimmer is the Powerload auto-feeding head. Anyone who has wrestles with loading up fresh line onto a string trimmer head has probably, at one point or another, considered smashing the business end of their trimmer against a wall. Or their own head, for that matter. The process can be painful: the head is a pain to take apart, the string won’t cooperate, the sun beats down on you, and it feels like the whole process takes an inordinate amount of time.

EGO has fixed that. Instead of the muss and fuss, you simply push the 0.095″ line through one of the holes and pull it out the other end. Then, you pull the ends even so that the line centers up. Then, the magic happens. As you hold down the button on the back of the motor, the Powerload head ratchets the line up evenly. And the best part? The whole process takes about 10 seconds.

EGO has even optimized the speed and sound levels to ensure that you don’t overwind the line or whip yourself in the face as the line winds up. I don’t know about you, but I appreciate not being flogged by my string trimmer; it’s one of life’s simple pleasures, I guess. Good lookin’ out, EGO!

EGO Powerload String Trimmer with Carbon Fiber Shaft

Check out the new EGO Powerload String Trimmer reload function! We'll give Clint a little break on centering the line… maybe.

Posted by OPE Reviews on Friday, February 2, 2018

Other Notable Features

The EGO Carbon Fiber String Trimmer also features a free-spinning bumper on the head; the bumper spins separately from the head itself. This reduces wear on the part and is also helpful for folks who prefer to slide the head across the ground while trimming. We noticed that the head “rolls” very well, offering less resistance against the grass.

EGO Carbon Fiber String Trimmer

This new model also features a side trigger safety control. Basically, you’ll need to hold down the safety switch on the side to pull the trigger and start the motor. Thankfully, it’s easily accessible with the thumb.  EGO Carbon Fiber String Trimmer

EGO Carbon Fiber String TrimmerEGO’s new trimmer also features a 15″ cutting swath, variable speed control, and a long-lasting and powerful brushless motor.


The EGO Carbon Fiber String Trimmer runs $229 for the kit, which includes a 2.5Ah battery and charger. For those of you already on the EGO battery platform, the bare tool is available as well. It retails for $169. The trimmer comes with a 5-Year limited warranty.

The last model was $30 less for the kit without the carbon fiber shaft and Powerload head (it had a Rapid Reload head). What’s interesting about the new price point is that it’s right in line with EGO direct competitors who clearly aren’t touting the new features. EGO also has an advantage in weight, balance, and vibration. So it’s really a wonder why you’d pull the trigger on something else at the same price.

What About Power?

Innovation is great, but if the string doesn’t cut, the rest doesn’t matter. EGO rates their latest string trimmer for 0.080″ and 0.095″ line and it comes pre-spooled with 0.095″. Here’s a little insider information – you can put 0.105″ line on it. It will just take a shorter length. That’s a big deal for Pros who are considering going cordless. The guys in our circles won’t touch a trimmer that doesn’t get to at least 0.105″. Even for homeowners, the extra diameter will give you a tougher line for use around fences and other line-chewing obstacles.

EGO Powerload String Trimmer with Carbon Fiber Shaft Action

Here's a little more eye candy of the EGO Powerload String Trimmer earning it's keep. Thoughts?

Posted by OPE Reviews on Friday, February 2, 2018

In our testing, there’s just not a lot to complain about. The power and balance are as solid as the previous model and there’s a noticeable weight difference. So from where we stand, EGO took an already great product and made it better while remaining the best value in the cordless string trimmer game.


EGO Carbon Fiber String Trimmer Features

  • EGO Carbon Fiber String TrimmerAuto-wind head, load your line, push a button and go
  • Carbon fiber shaft with a lifetime warranty
  • 15 cutting swath
  • Dual-feed spiral twist 0.095 in. line
  • Hi-efficiency brushless motor
  • Variable speed control
  • 5-year limited warranty
  • MSRP: Around $229, includes 2.5Ah battery and 56-Volt charger
  • Also available as a bare tool for around $169

Ego Carbon Fiber String Trimmer Specs

  • EGO Carbon Fiber String TrimmerModel Number: ST1521S (Kit)
  • Depth: 71.81″
  • Height: 4.44″
  • Width: 7.83″
  • Weight: 11.97 lbs.
  • Max Cutting Path Diameter: 15″
  • Head Type: Cartridge
  • Line Advance System: Automatic
  • Line Diameter: 0.95″
  • Number Of Trim Lines: 2
  • Shaft Length: 42″
  • Shaft Type: Straight
  • Assembly Required: Yes
  • Battery Amp Hours: 2.5 Ah
  • Battery type: Lithium-Ion
  • Voltage: 56V

For more information about the new EGO Carbon Fiber String Trimmer With The Powerload Head, check out To purchase this product, click here.

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