EGO ST1521S Carbon Split Shaft Grass Trimmer Questions

  • 1
  • Question
  • Updated 2 years ago
  • Answered
This is my second season with my ST1502SF and I really like it. I have a chance to hand this down and pick up the subject trimmer. I know all of the positives but any negatives?

Reading many reviews I have seen a few say the auto-load takes longer to load than manual load. Couple have said the last of the old string gets trapped in the trimmer head and you have to take it apart to remove it. Anyone else have this issue?

Other things I heard are poor battery life. Will life be any different than my 1502?

Power, some said it is underpowered. Any different than the 1502?

And lastly, does the string rotate the same as the 1502?


Photo of Michael G

Michael G

  • 9,120 Points 5k badge 2x thumb

Posted 2 years ago

  • 1
Photo of Blue Angel

Blue Angel, Champion

  • 180,988 Points 100k badge 2x thumb
Official Response
1. It’s pretty fast at winding. I suppose you could do it faster if you tried?

2. I haven’t had an issue with string getting stuck inside.

3. I can’t see why battery life would be any different, unless you’re playing with the auto load all the time. I’ve never exhausted a battery in one go (smaller yard) so I’m not sure.

4. Power seems the same as my ST1500, but to be honest I’ve not pushed it super hard.

5. String rotation is the same.

The only major downside I can think of is the reduced speed range (starts at a higher minimum speed), but that’s compared to the ST1500. I think the ST1502 has a narrower speed range as well, I haven’t used it.

Hope that helps.
Photo of Ken

Ken, Champion

  • 73,740 Points 50k badge 2x thumb
I've been using my carbon fiber trimmer all season with few complaints so far.

I haven't had to reload it yet since the string I use (Husqvarna Titanium Force) is very tough, and I don't tend to beat it against concrete. But I would say string load times with either trimmer are not a concern. The auto-load head will load 12-15 feet of string in a little more than 10 seconds. You might be able to beat it by hand, but you'd have to really work to do so.

I usually use the 2.5 Ah battery for the lightness. Run time has been fine for me, even when I'm tackling the jungle along the fence in my backyard.

Like Blue, I don't like what Ego did with the variable-speed trigger. The range of speeds is much more restricted with this trimmer, starting at about half speed rather than slow. Apparently this was done to address customers who complained their trimmers didn't start quickly enough.
Photo of szwoopp

szwoopp, Champion

  • 120,660 Points 100k badge 2x thumb
Blue and Ken covered all of your questions.  I will just add it has been working great for me. 

Only complaint is the string has not run out so I have not been able to use the power load feature a second time yet. :)