Best Auto Feed String Trimmers of 2025

"I was pleasantly surprised by the quality of this Black & Decker trimmer. It was easy to handle and lightweight, making yard work a breeze. I managed to clear my yard in just 10-15 minutes. The only downside is that the string runs out faster than I expected, but overall, I’m exceedingly happy with my purchase!"

"Initially, I was skeptical about this affordable string trimmer. However, after using it, I can confidently say it’s powerful and has exceeded my expectations. Setting it up took merely a few minutes, and I didn't even need to consult the manual. It’s perfectly suited for light yard work, and the auto-feed feature works flawlessly!"

"This trimmer has been a game-changer for my lawn care. I appreciate the wheel for trimming and the fact that it doesn’t need recharging. However, I do wish there were two strings instead of one, as it runs out a bit quicker. Still, the motor power is excellent, and I’m satisfied with its performance!"

"I was initially frustrated with my trimmer because the string seemed to snap almost immediately. But after discovering that the spool was wound backwards, I rewound it correctly, and now it runs perfectly! It’s lightweight, charges quickly, and handles my weedy lawn well. For such a low price, it's unbeatable, just remember to check the spool line!"

"Using the MZK cordless trimmer was a breeze! The 12-inch cutting width is impressive, and I love the automatic line feed. It’s lightweight, making my trimming tasks much easier. However, while it’s powerful for its size, it struggles a little with thicker weeds. Overall, it’s great for regular maintenance."

"I just assembled this trimmer, and it was super easy to use even without the manual. I had some concerns about future spool compatibility, but MZK support informed me about a newer design that won’t fit. I found that I could easily wind a new string length if needed. Overall, MZK tools are solid and reliable!"

“I'm thrilled with my purchase of this lightweight and powerful cordless string trimmer! It handles long grass effortlessly and operates smoothly. The angle adjustability of the trimmer head and handle is fantastic for both ease of use and storage. I used to have a rechargeable trimmer without a removable battery, but this one is not only lighter, it’s also more versatile because I can detach the battery at any time. If you're seeking a convenient and effective cordless trimmer, this is it!”

“To be honest, this trimmer feels like a wannabe weedwhacker. While it's easy to assemble and very lightweight, that's about where the positives end for me. It’s great for light tasks, but I rarely need a trimmer for that. I found the build quality lacking, and my DeWalt batteries kept falling out of their holder, which was incredibly frustrating. Overall, I couldn't get excited about this trimmer due to its design issues.”

“If you're looking for a workhorse string trimmer, you might want to look elsewhere. This trimmer is perfect for keeping in my truck for small jobs without worrying about gas spills. It's simple to put together and works well with my DeWalt batteries. The push button line feed is a nice feature, and while it's mostly plastic, it’s still handy for light use. Overall, I appreciate the convenience of having this trimmer always ready to go.”

"I bought this for my wife who wanted to learn trimming after a big landscaping project. My old trimmer is heavy, so I was thrilled with this lightweight option. It came with two batteries and extra spools, and trimming was easy. It handles regular grass and some weeds well, though it struggles with thicker stalks. The adjustable unit is great for edging, and I was surprised at how well it performed for the cost. I've only used it for a month, but the battery life seems good, lasting a long time before needing a charge."

"I have no complaints about this trimmer. I got around 35 minutes of use on a full charge, which is good for light tasks. It came with two batteries and several preloaded spools. It was easy to assemble, though the guard was a bit tricky. I appreciate that it uses the same spool as my old trimmer. Given my shoulder pain, the lightweight design is a huge plus for me."

"When I first got this string trimmer, I was excited. It was easy to assemble, and I loved having extra spools and two batteries. However, the power was disappointing from the start. It took forever to trim the grass next to my fence, and it really struggled with thicker areas. The first battery lasted only ten minutes, and the second barely lasted eight. Honestly, it feels more like a toy than a real tool. If you have a tiny yard, it might work, but I regret spending my money on it."

"I bought this for my grandpa because his gas trimmer was too heavy for him. He appreciates how light it is and the good length for his height of 5'3. It does the job well as long as you keep your grass below 6 or 7 inches. The edge trimmer feature really surprised me with how effectively it worked. The two batteries are a huge plus, lasting long enough to trim around my 2100 sqft house with some juice left for touch-ups."

"As a 66-year-old grandmother, using my heavy gas-powered trimmer felt like a chore. This light electric trimmer is absolutely fantastic! Each of the two batteries lasted about 45 minutes. It excels at creating a deep edge when I turn it sideways, achieving an inch deep and inch wide edge. While it's not designed for heavy brush clearing, it’s perfect for maintaining a yard. I love that there’s no winding or re-stringing involved—just pop in a new spool!"

"This is my first weed whacker, and for the Black Friday price, it’s a good deal. However, it won’t cut through woody stems. It handles grass, ferns, and thin vines well. I found the battery life to be good, and it’s relatively lightweight and easy to assemble and operate."

"I was shocked by how well this product worked. The battery lasts a long time and the string was easy to put on."

"I haven't liked electric tools in the past, but this trimmer does a fantastic job. It lasts a long time and has me considering other products in its range to replace my older gas tools."

"After trying to use this for a while, I found it too heavy for me. I ended up giving it away. My hands cramped from how I had to hold the button and trigger, which was frustrating. I even tried duct tape to keep the button down, but that didn’t work either."

"I find it simple to use and it fulfills its functions. I'm very happy with my purchase."

"I bought this to replace an older model, and while it’s okay and works, it doesn’t feel as powerful as I expected."

"I liked using it initially, but after just a few uses, it stopped working, even with a fully charged battery. It's disappointing!"

"I bought this trimmer to replace my Stihl FS-91. The EGO is much lighter and faster due to the Line IQ feature. It keeps the string at the right length, saving me time. It handled 12-inch weeds on low power without slowing down, and I still had five bars left on the battery after half an hour. Impressive performance! I love how easy it is to maintain a set speed."

"I've been using my EGO weed whacker for years and it's been very effective. The new model is incredibly light and the push-button line feeding is a game changer! I finished my yard work in less than half the time and didn't feel worn out. The battery life is also fantastic; I used the same battery for mowing and trimming without issues. This is as close to fun as yard work gets!"

"I bought this trimmer due to its great reviews and my satisfaction with my EGO mower. However, I found it to be quite heavy and short for my height. I struggled during use and ultimately decided to return it. Luckily, Amazon accepted my return. I replaced it with a lighter and cheaper model that also has the automatic line feed feature."

"I purchased this because the reviews were positive. I was looking for something lightweight and easy to handle. It came with two batteries, which was a big advantage. Unfortunately, the first battery lasted only 5 minutes, and the second one was no better after charging. After using it a few times, the motor started to smell funny, and it didn't cut well anymore. I'm not interested in fixing it or buying another one from this brand, so I'm left with no choice but to dispose of it."

"With summer approaching, I was eager to start mowing again. This mower is lightweight, charges quickly, and is simple to assemble, even for someone new like me. It cuts effectively and lasts a long time on a single charge. Pro tip: Mow at a slight angle for better results. Overall, a solid product!"

"I was initially hesitant about ordering this trimmer due to past experiences, but this one has been a pleasant surprise. It's user-friendly, holds a charge for a decent amount of time, and comes with a backup battery. The adjustable edger is also a nice feature!"

"I love that it's lightweight, the battery holds up well, and it's easy to use. It's very efficient and well made. Great bargain! Perfect size for my apartment and works for small to large jobs."

"I was initially skeptical about purchasing a weed eater from Amazon, but I was really impressed with how well this one performs! I would definitely recommend it to others!"

"I got tired of spending money on weed killer and breaking my back pulling weeds, so I decided to buy this. It was packaged well and came with a manual for assembly. I put it together quickly and had a lot of fun using it!"