Top 5 Best Cordless String Trimmer Reviews & Buying Guide 2018


​Cordless string trimmers offer plenty of benefits over their gas-powered or corded counterparts. Also known as weed eaters and weed whackers, the most obvious benefit is the freedom of effortless movement. With this string trimmer, you can move from one corner of the garden to the other without having to avoid trailing cables. Have you ever found the weed eater’s cords sagging or have accidentally cut through them? If you have, the cordless model is the ultimate solution. Of course, there are tons of other benefits. However, the focus of this article is on the best cordless string trimmer reviews.

Top Highly Rated Cordless String Trimmers:

Buying Guide for Cordless Weed Eater

Ultimately, the best cordless string trimmer is one that meets your needs. Do not be swayed by the glowing reviews or the features of a weed eater that doesn’t come close to addressing your needs. You should find one that is within your budget, comfortable to use and handles the task you want it to accomplish.

Yard Size

Given that a majority of cordless weed eaters are battery-powered, they are the best choices for tackling urban and suburban yards. However, if you plan to do a lot of trimming or have a very large lawn with stubborn grass, a gas weed eater might be a better option.


During use, it’s likely that you’ll be bearing the entire weight of your weed eater. Consequently, it’s important to choose one that is comfortable to carry and navigate around. Whenever possible, go for models that come with padded shoulder straps to avoid straining your shoulders.

Battery Life

Cordless weed whackers that are powered using lithium-ion batteries, usually last between 15 and 60 minutes. Once they run out of power, you have to recharge them. That said, one of the aspects you should examine is the trimmer’s battery life. With a long battery life, you’ll be able to cover a lot of ground on a single charge. 

When it comes to recharging, these string trimmers take varying amounts of time. Some batteries recharge in half an hour while others take up to two hours. If you don’t want to wait too long while the battery recharges, consider getting an extra battery or two.


If the weed eater does not offer enough comfort during use, then you might not use it as often as you should. For the best experience, look for a cordless trimmer with an adjustable handle, cutting head angle, and shaft length.

Cordless String Trimmer Reviews

1. Greenworks PRO Cordless String Trimmer

Greenworks PRO 16-Inch 80V Cordless String Trimmer (Attachment Capable), Battery Not Included GST80320

This is a high-quality cordless weed eater that will help you tackle some of the toughest jobs. It’s designed with a reliable 80-volt, two-amp lithium-ion battery for spinning the14/16-inch cut string.

Greenworks Pro string trimmer has the same power as a gas-powered model with an engine size of 32 cc. Plus, it’s compatible with several battery models including a 2Ah (GBA80200) and a 4Ah(GBA80400). The battery takes only half an hour to charge allowing you to get back to your work within no time.


  • Can operate for 45 minutes on a single charge
  • Comes with DigiPro brushless motors
  • Has a split boom design that is compatible with most gas attachments
  • Has a self-winding spool head


  • A powerful machine with an 80-volt lithium-ion battery that is ideal for tough trimming jobs
  • Relatively quiet when running
  • Can operate for an entire 45 minutes without running low on charge
  • Since it’s cordless, it requires less maintenance than a gas-powered weed eater
  • The manufacturer offers a 4-year warranty on the weed eater


  • Weighing in at 16 pounds, the string trimmer is quite heavy
EGO Power+ 15-Inch 56-Volt Lithium-Ion Cordless Brushless String Trimmer - 2.0Ah Battery and Charger Kit

Another cordless model that is as powerful and affordable as a gas-powered model is the Ego Power+ Brushless string trimmer. The only difference is that you won’t have to deal with the messy fuel or smelly exhaust associated with low-quality gas trimmers.

This weed eater has enough run time to cut through a one-foot-wide strip of grass nearly two-thirds of a mile on one battery charge. With all this power, you’d expect to be the Ego Power+ to be one of the noisiest, but it’s not. It’s actually one of the quietest models that we tested. Weighing a measly 10 pounds, this string trimmer is not the lightest on the market. However, it has a superb balance and its handling makes it one of the easiest to swing around and negate through tricky sections.


  • Has a dual-feed twist line with a 0.095-inch diameter
  • Fitted with a high-efficiency brushless motor with multiple speeds
  • Made of weather-resistant materials
  • The weight of 10 pounds
  • Comes with a two-amp battery kit
  • 15-inch cutting width


  • The extended shaft and wide cutting path make for efficient trimming around your yard
  • Delivers the performance of a gas-powered string trimmer
  • The weather-resistant construction means that you can work in any condition


  • Expensive
  • Does not have an indicator to show the battery level
BLACK+DECKER LST136W 40V MAX Lithium String Trimmer

The Black & Decker LST136W is regarded the best cordless string trimmer and for good reason. For one, this string trimmer is highly customizable. Users have the freedom to adjust both the shaft’s length and power settings.

Moreover, the weed eater features a dedicated edging position and an edging guide to help you get that clean and straight cut in just one pass. Its 13-inch cutting width may not be the best, but it’s enough to cut through grass and weeds.

Another drawback is its short battery life. The trimmer runs for a maximum of 25 minutes on a single charge. However, it makes up for this by providing good balance and handling.


  • Equipped with PowerDrive Transmission to deliver more power
  • Uses a 40V MAX lithium-ion battery
  • Comes with a power command dial to help you set your preferred power and runtime
  • Weighs 7.8 pounds


  • It has an automatic feed spool (AFS), to provide a continuous operation without bumping
  • It’s a well-balanced and maneuverable tool
  • Has an adjustable shaft length
  • Adjustable power settings


  • Short battery life
  • Narrow cutting path
WORX WG163 GT 3.0 20V PowerShare 12 Cordless String Trimmer & Edger

Worx WG163 has all the bells and whistles of cordless string trimmers but with a low price tag. And the good thing is that you won’t just be getting a trimmer when you buy this tool. It also doubles up as an edger, so you can switch between trimming and edging to make your lawn look even more beautiful.

Perhaps the greatest benefit of this trimmer is that it is light. Weighing slightly over 5 pounds, this weed eater is easy to carry and navigate. Its command feed component delivers on-demand line feeding to keep you moving while the provision of a 2nd battery helps to double its runtime. This way, you never have to worry about running out of power.


  • Uses two 20V cordless Max lithium power batteries
  • 12-inch cutting diameter
  • Cutting length of 10 feet
  • Has a quick-release lever
  • Weighs 5.3 pounds
  • The handle has 7 locking adjustments


  • Comes with a battery power indicator
  • Doubles up as an in-line edger
  • Features an ultra-weight design of 5.3 pounds
  • Includes two batteries and a charger


  • The battery takes a long time to recharge
  • Its guide wheels cannot be repositioned
Kobalt 40-volt Max Cordless String Trimmer

One way to determine whether a manufacturer has confidence in their products is by checking the warranty they offer. Generally, the longer the warranty offered, the better the product’s quality. If you compare the warranties offered on weed eaters, you will realize that most of them have a 3-year warranty—but the Kobalt 50V has a 5-year warranty.

Also, with an average battery run time of 45 minutes, this weed eater last longer than other models like the Black & Decker. It also has an adjustable shaft, which makes it easy to navigate in hard-to-reach areas. The adjustable shaft also means that it can tackle a variety of weeds without needing a readjustment of its angle.


  • Converts between a string trimmer and edger
  • Uses a 40-volt max lithium-ion battery system
  • Compatible with other Kobalt 40V lawn care tools
  • Has a heavy-duty 0.08-inch dual line
  • Comes with a variable speed trigger


  • Has the best warranty of 5 years
  • Comes with an adjustable shaft to provide versatility
  • Its battery can operate for a full 45 minutes on a single charge


  • Narrow cutting path
  • Does not have a dedicated edging position

Final Word

Cordless weed whackers have a lot to offer. These gardening tools enable you to trim your lawn without worrying about emissions or engine maintenance. They also run very quietly. If you’re looking to purchase a cordless string trimmer, some of the features you should look for are the type of battery, battery life, weight,and adjustability.