Greenworks ST40B410 Cordless String, 12" Trimmer (4.0Ah), Green & Black

Considering the weight of the massive battery, this trimmer is lightweight and easy to maneuver. The edge guide tells you how far the string can go, and the auto-feed keeps it pretty close, so it's easy to precisely trim the edges of the lawn and around bushes and trees. This trimmer has enough power to get through normal tasks around the lawn quickly so I don't need anything close to the advertised "up to 60 minutes".On the negative side, the orientation of the trigger is a bit awkward. I'm forced to bend my wrist uncomfortably to get good control of the trigger. This is a potential problem for those who use this trimmer for extended periods of time.Beyond the lawn, this trimmer, for all its power, is nothing compared to a good gas trimmer. The 0.065" line bounces right off 1-1/2" thick weed stalks, gets caught up in the low-growing wiry weeds, and takes quite a bit of time to work its way through thick clumps of native grass. However, this trimmer shines again for trimming along the fence line.Overall, the Greenworks ST40B410 has been a terrific add to my arsenal, and it puts a bit of pleasure into yardwork.

This string trimmer works great and has more power than I thought. I had some heavy duty weeds to take care of. No problem putting it together(I usually have issues with this) The battery lasted long enough for what I needed and recharged pretty fast. I mainly used the trimmer for grooming around my tree boxes and tidy up after the lawnmower. I ventured out to an area with tall and heavy weeds and I followed the directions cutting from top to bottom. It was slower going than the gas trimmer my husband uses but did ok. I just tried it for a short time, don't want to push it. The only drawback for me is that the shaft length is not adjustable. I'm 5'1" so it's an awkward fit. I cannot hold it in a working position for long. The auto feed works fine so far. I hope changing the string won't be a pain.Update: 1/4 acre overrun by weeds!! I couldn't find my hoses and I am paranoid about snakes in the bushes.So I pulled out my trusty Greenworks and hoped it would work. Well it wacked those weed bushes like I could not believe!! It is a little heavy for me but I am short and over 70. Battery life is more than 30 min. Hard to tell since I have to take breaks a lot. I love this trimmer.

I got a few of the greenworks battery tools, and like them all, but this one is disappointing in that you can't shorten the pole. it's too long for a shorter person, so makes it difficult to maneuver around, and it gets heavy using it after a few minutes. It works great, but is just hard to use w/o being able to shorten the pole.

I am very impressed with how powerful this tool is despite being battery powered!

This review is based on first use with 1 &1/2 charges..If I run into trouble and have to return it, I will update my experience. Battery life: about as expected and advertised. I trimmed f1/4 1 acre residential yard trimming heavy grass, including weeds with stalks up to 3/8" diameter& chain link fences in 1 1/2 charges. it has to run full throttle to cut the thick stuff, whereas my gas trimmer didn't. but then my gas trimmer blew up after maybe 25 uses and cost $200 and I got this one for $109 and can replace it without batteries for under $6o and it does the same job in the same time and is actually easier to use since it is lighter. Charges fast. Says 1 hour for this size battery, but maybe faster..\Weight: unlike gas models this unit is heavy at the cutting end. The battery is extremely light weight even not comparative to it's size, but I'd still rather own two 2 AH batteries than one 4AH. The string seems to be nothing generic like you can buy in bulk and I think more durable. Operation: it is not overpowered like the gas ones, therefore I don't recommend the 20V single string model to anyone who is trimming anything in addition to regularly mowed grass such as thick stalk weeds like I needed to cut. And obviously even this 40V model is not suitable for commercial, every day use..Regarding string feeding complaints in reviews: despite all the complaints and bad reviews here about this auto-feed design not feeding out, I had no problem with mine. I think the bad reviews based upon the supposed non feeding issue are due to the reviewers not reading the instructions. If they called support, i suspect the issue was resolved and they've all been too lazy or perhaps personally dishonest to change their reviews to reflect their mistakes. But if I am wrong and mine has an issue, I know I can depend upon Amazon and GteenWorks to resolve the issue for me. Feeding discussion continued: twice the string got short and i had to do what the instructions say, which is to pull the trigger for 2-5 seconds and then let off the trigger for 2-5 seconds before resuming work. one time when one string went up inside the spool, I had to take the spool out and refeed the line through the hole. Twice more I had to press the button in the side of the spool hub and manually pull out the strings on both sides. But most of the time it fed out automatically just as it says it does. And frankly, it works at least as well as my old bump feed one and if it stops auto feeding entirely, I would put up with having to stop once in a while and manually extracting the lines as described above, it works that good and costs so little comparative to rival products..I also almost sent it back the same day, today. because I placed it on charge after I finished the yard and in about 5 minutes the green "done" light came on and would not go off even if I unplugged everything and plugged it back on, it went right to "done charging". intent on sending it back I disassembled it and threw it in the box and went online and requested a return. Amazon automatically created a new order to replace it at 0$ an said I had a month to return this one. So then I looked at the battery again, which I had left in the charger plugged in, and it was charging and the read "charging light was on. It finally took a full charge.supposedly if a hot pack is plugged into the charger, it says teh hot pack indicator light is supposed to be orange. Well I am assuming that that was the problem, a hot pack, but the orange light never came on, just the red and green ones. So I am assuming that there is a minor malfunction in the charger either once or permanent that didn't let it show the "hot pack" delay it was in before I packed it up.I greatfully unpacked and reassembled it because I don't like being suckered by garbage products for any amount of $. I'd rather be wrong and have to repack and unpack something than actually have to return it because it's phony garbage. The only pleasure I get out of that experience is when i'm smearing the truth all over Amazon about my bad experience with the product with almost vengeful zeal.

Greenworks makes some good string trimmers once you figure out what one you want, lot of choices. I have had another one for several years but it was a single line model and was heavy to work with. This one is 2 line and is easy to work with Also easy to put together. Battery life should be good and to keep weight down i would recommend the 2AHReview update:!I used this yesterday and was pleased with how well it worked. The unit is not light and seems to be balaced as well as can be expected, the issue with the button on the side is true but not a game changer tad bit hard to engage but manageable

Es ligera en comparación a otras ya con la pila puesta, por lo que facilita el uso y manejo en cualquier lugar, yo la utilizo en lugares con declive

Para trabajos sensillos es perfecta muy sencilla de usar