Have you sent any in for repair?
No. No issues.
My point is - when I first read your post and some comments, I got worried that I had no 4 year warranty for the 4 units I bought from Amazon - seller is "Greenworks". There is some misinterpretations in this thread mainly, I think.
The warranty is simple - BUT it does say ORIGINAL PURCHASER. So I get it, it's a way of stemming support of counterfeit units. Or as mentioned theft and cheesy resellers. I just don't buy this kind of thing from ebay.
Maybe the 40V stuff is their cheapie line, never tried any of those items.
To show you that I use my stuff:
My house was build on essentially and old farm in the forest. Just a temperate rain forest gone crazy, seedlings that turned 40+ years, snags, brush, canes gon nuts, you name it. The acre surrounding my house was NASTY April 12 last year when we moved in. Today it is clear and landscape is almost complete. Greenworks tools were part of the success I suppose I can say.
80V GWPro 18" Chainsaw - works very nice. I've cut and bucked a variety of trees (cherry 16" +, apple, fir, walnut, etc) and have worked it HARD. I rarely will cut down a good tree, these were all needing to be cut. Chain tension is crucial or it will jump. Luckily it's easy to tighten. I read the OE chain and bar are weak, but Oregon parts fit perfectly so I bought an Oregon bar and chain , even nuts to do this mod, but I have not yet. OEchain still hanging in there.
80V GwPro - String trimmer - this is the Greenworks device I use the most. I have been thrashing it since new over a year ago. The head is battered. I am unsure how much life is in it but no signs of failure and still loads and dispenses string fine. It's been used for long chunks of time only stopping for battery swap and string. Within reason, I tend to keep it speeding from close by area to the next as I assume stopping and starting uses more current draw. I need to see if I can find an aftermarket brush cutter. Greenworks claims it will work with many other brands.
80V GWPro Blower - love the thing, but is a hassle to carry especiall with the largest battery. I mainly use it as a bellows. If I make a burn pile and rig a it to blow in the center for hours (very low speed BTW) it will slag the earth underneath and combustion can be near complete. I have run it all day with just battery swap
80V GWPro Back pack blower - I end up using this one in the breezeway, drives, shed, patio and sidewalk. A lot. Never had a gas blower but this thing is nice and just as strong as our Toro plug replacement (our first Toro died pretty early)
Anyway, no problems so I thought it odd folks are having issues.