Best Cordless Battery Powered Weed Eater / Wacker Reviews – A Comprehensive Guide 2017

Cordless battery powered weed eaters; or cordless trimmers as some may all them, have been around for a long time. In the beginning, they weren’t a viable option for long term yard care use as their batteries weren’t powerful and didn’t last very long. Skip forward to now, and a battery powered trimmer is one of the best options of weed eaters. They are very powerful – in some cases similar to a gas powered trimmer. And the batteries last longer than ever.

They can also perform numerous functions and come with attachments on some models turning them into an all in one tool. Not only can they can trim weeds, they also edge, trim hedges, and so much more. A battery powered weed eater is no longer a cheap option for a quick fix in your yard. They have become reliable, very easy to use and best of all – affordable.

This guide will help you determine if a battery powered weed eater is right for you. We lay out all the pros and cons and describe what features will be of benefit. We also have a list of the best battery powered trimmers on the market to make your buying decision even easier.

Overview of Battery Powered Weed Eater

Best Battery Powered Weed Eater Reviews

Reasons for Choosing This Type

There are a lot of reasons as to why a consumer should choose a cordless battery powered weed eater. However, only the main reasons for this choice are going to be mentioned briefly below; think of them as guidelines to follow for finding the one that will benefit you the most.

  • Mobility: Cordless weed eaters can go anywhere you want them to. Without the cord, there is no need to switch from outlet to outlet.
  • Easy to Use: With a battery powered weed eater, you simply pop a battery in and push a button. There’s no need to mix gas or pull start.
  • Quiet: Aside from the trimmer heads whirling, there is virtually no noise.
  • Environment: Battery powered trimmers emit no pollutants making them a very eco-friendly tool.
  • Cost Effective: Battery weed eaters cost less than gas, but still provide plenty of power.

Apart from the above reasons, there are several other benefits of using this machine, which makes it more versatile and suitable for any garden lover.

Selecting the best weed eater among the plethora of options available in the market may be a daunting task. To simplify things for you, we have reviewed some of the best products for your convenience.

Reviews of Best Cordless Battery Powered Weed Eater

BLACK+DECKER LST136W 40V MAX Lithium Ion String Trimmer, 13"
  • The PowerDrive Transmission delivers more power from the motor to the cutting string so you can get the job done faster
  • 40V MAX* lithium battery for long runtime
  • PowerCommand dial to choose between MAX power and MAX runtime
  • The Automatic Feed Spool ensures continuous work without bumping
  • Easily converts from trimmer to edger with a quick turn of the shaft

This monster from BLACK+DECKER is head and shoulders above the competition. Loaded with plenty of features that not only sound cool; they are actually useful. It is lightweight for great mobility and comfort… read more.

BLACK+DECKER LST220 20V Lithium Ion Cordless GrassHog Trimmer/Edger, 12"
  • Easily converts from trimmer to edger with a quick turn of the shaft
  • Powered by 20-volt MAX lithium-ion battery, with longer lifespan and charge retention than NiCad batteries
  • PowerDrive Transmission delivers more power from the motor to the cutting string
  • Automatic Feed Spool ensures continuous work without bumping
  • 2-year limited warranty; includes battery and Energy Star-qualified charger

Not just a trimmer, this multipurpose garden tool can also serve as an edger. Within a few seconds, after you turn the shaft, it can instantly convert into another function. Regardless of its intended application, you can be confident that its can deliver optimal performance.

20-Volt Max Lithium Ion Battery

Even if this is powered by battery, you should not be deeply concerned. Even people who have used it for an extended period revealed that the battery did not disappoint. It maintains its charge for an extended period. On the other hand, when it is drained, you do not have to wait long before it can be fully-charged.

Automatic Food Spool

This is another excellent feature and can prove to be a big time-saver. This will allow you to work continuously and there is no need for manually adjusting the spool. It also eliminates the need to make frequent adjustments in the spool.

Adjustable Height and Handle

The height of the handle of the trimmer can be customized depending on the length that is preferred. This means that whether you are short or tall, you can expect that the shaft will be right for your needs.  All you need for this is a good screwdriver. You may decide to use a power drill driver to make it even easier and faster.  For those women that like it, you can get a pink drill.

PowerDrive Transmission

This is an innovative feature that is found in most of the string trimmers from Black & Decker. Such is one of the reasons why you can expect optimal performance from this product, even if you have to accomplish a tough task.

Indeed, Black+Decker LST220 Cordless GrassHog Trimmer is one option that is hard to match. After all, it is made by a brand that has earned its mark in the global marketplace. With this cordless and battery-powered trimmer, you can do your work in a way that is more convenient and comfortable, especially because the weight of the product is less than 5 pounds.

BLACK+DECKER LCC420 20V Lithium Ion String Trimmer and Sweeper Combo Kit
  • 20-Volt MAX Lithium Ion battery has a longer lifespan and retains its charge 5X more than NiCad
  • String Trimmer features an transmission that delivers more cutting power
  • Trimmer easily converts to edger to cut along sidewalks and driveways
  • The Automatic Feed Spool ensures continuous work without bumping and having to stop to adjust
  • Sweeper is light and powerful and easily clears debris from hard surfaces

With a cordless design and powerful battery, this is a string trimmer that you will love. It has a compact body and lightweight design, which are obvious indicators that it is indeed built with your needs in mind.

20-volt Max Lithium Ion Battery

There is no need to worry about the possibility that the trimmer will suddenly stop in the middle of the job only because the battery has drained. Compared to NiCad, lithium ion batteries are asserted to be better because they can hold charge longer while also being more durable.

Runtime Extension Technology

It comes with a dual mode accelerator switch. One of the main benefits of the latter is that it will add up to one hour on the runtime of the string trimmer. You will be able to accomplish more with a single charge of the unit’s battery.

Gear Drive Tranmission

This is one feature of the motor that allows it to deliver optimal trimming performance, even if it is to be used in demanding applications. Even the pros will have to agree that its power will be hard to rival. The transmission also protects internal components from wear and tear.

2-in-1 Functionality

You can also expect that this will provide excellent value for the money, simply because you will be able to enjoy two functions in one product. It is not only a trimmer, but also an edger. This can be a dependable companion in the garden.

Indeed, Black+Decker LCC420 String Trimmer has what it takes to be ranked as one of the best within the product category. It has an exceptional battery that holds charge for a long time. It also has excellent transmission for better cutting power, even in tough applications. It is also a plus that it has a lightweight body, which makes it easy to use.

WORX 32-Volt GT2.0 String Trimmer/Edger/Mini-Mower with Tilting Head and Single Line Feed
  • Comes with one 32V MaxLithium battery, 3 trimmer spools and charger
  • 3-in-1 Capability with dual-position wheels for grass trimming, edging, and mowing. The battery and charger are packaged separately from the tool, but in the same box.
  • Converts from a trimmer to an in-line edger in seconds with no tools
  • Quick-release lever for fast telescopic height adjustments, and for the 90-degree tilting head
  • 12-inch cutting diameter with automatic 100% single line feed (no bump)

This should be seen as a necessary investment by anyone who loves gardening. More than just being a string trimmer, it can also function as an edger and mini-mower. You can convert from one function to another in a snap, and best of all, without the need to use any tool.

12-inch Cutting Diameter

Especially if you have a large garden, trimming can be an exhausting task. One feature of this product that addresses such problem is the wide radius of its cutting path. This will allow you to trim a larger area within a shorter span of time.

32-volt Max Lithium Battery

Dependable power even on the go – this is one thing that you can expect from this product. Since it is battery-powered, you can work anywhere. There is no need to have a source of electricity near you. Also, because it is cordless, you can easily move as you use this product.

Quick Release Lever

One thing that makes this a versatile choice is the adjustable height. Simply release the lever and in an instant, you can increase or decrease the length of the shaft. This will allow you to have it customized depending on the requirements of a specific task.


It is also a good thing that the string trimmer is lightweight. Even if you will need to hold it for a long time, there should be no problem. It is not as exhausting as most of its heavier counterparts.

Overall, Worx 32-volt G2.0 String Trimmer is exceptional because it is a multipurpose gardening equipment. It is not only comfortable to hold, but also offers several handle adjustments to personalize it based on what a specific task requires. It also has minimal weight, which is why it is never too tiring to use it.

Greenworks 14-Inch 40V Cordless String Trimmer (Attachment Capable), 4.0 AH Battery Included 21362
  • Attachment capable, accepts most gas attachments to provide mulitple use
  • Brushless motor delivers greater torque, quieter operation and higher battery efficiency
  • Starts within seconds with gas comparable performance, battery compatible with multiple tools
  • Battery and Charger include. Compatible with battery models 29462 and 29472 and charger 29482
  • Compatible GreenWorks Replacement bulk string, Model 2906302

The freedom to move – this is one of the best things about this string trimmer. It is battery-powered, which will allow you to work even in a place where there is no electricity supply. The quality of the battery is also commendable because it can retain its charge for a long time.

4AH Battery

Given the technical specifications of the battery that is included in this product, you can be assured of its dependability. When it is fully-charged, it can power the unit for up to an hour. On the other hand, when the battery is drained, charging it will take only approximately 120 minutes.

Instant Electric Start

In the case of the traditional string trimmers, effort will be required in pulling the string to launch the unit. In the case of this model, such is not one thing that you have to do. You can simply push a button, and in an instant, the unit will be ready to work.

DigiPro Brushless Motor

The design and power of the motor is also commendable. It is created in such a way that it will deliver powerful performance that is comparable to those that are powered by gas. However, it is different in the sense that this product operates without emissions and with minimal noise.

14-inch Cutting Path

Another thing that makes this a remarkable product is the diameter of its cutting radius. This simply means that you will be able to do more within a single pass. You do not need to wait for a long time before you are done with trimming.

In sum, GreenWorks 21362 Cordless String Trimmer is an excellent option if you are looking for a battery-powered alternative. It has an excellent motor that makes it perform like gas-powered trimmers in terms of power, sans the loud noise.

BLACK+DECKER LST300 20V Lithium Trimmer/Edger, 12"
  • 20-volt Lithium Ion battery pack for 33% more run time
  • The PowerDrive Transmission delivers more power from the motor to the cutting string so you can get the job done faster
  • Automatic Feed Spool ensures continuous work without bumping
  • 2-in-1 trim or edge - easily converts from trimmer to edger in seconds
  • Lightweight design with adjustable handle and height positions

The manufacturer has established a solid reputation in the market, which is why this model is considered as one of the top picks for the best string trimmer. It is powered by a high-capacity battery that will deliver long-term functionality while also providing you with the freedom to move.

20-volt Lithium Battery

Because it is battery-operated, one of the great things about this product is that it is convenient. You will feel free to move, unlike in the case of their corded counterparts wherein there is a need for a nearby source of power. The battery is also great because it packs 33% more power compared to other types.

POWERDRIVE Transmission

The transmission of this model maximizes the power that is drawn from the motor. This travels all the way to the string and the end result it the powerful ability of the string trimmer to tackle even the most demanding jobs.

Adjustable Handle and Height

It is also a good thing that there are several options for customization, making it possible for you to make the necessary adjustments depending on what you deem to be most comfortable. You can make it shorter or longer based on what is required by a specific task.

Automatic Feed Spool

This is the feature that is responsible for automatically feeding the spool line. There is nothing that needs to be done on your end. All that you have to do is to work continuously. There is no bumping necessary.

Overall, Black+Decker LST300 Trimmer is indeed a great choice. It is a multipurpose garden tool since it can be used not only as a trimmer, but also as an edger. The product is also lightweight and ergonomic, making it possible to provide the highest level of comfort. Plus, there are certain adjustments in the handle and height for customized comfort.


Depending on what your specific needs are, a cordless battery power weed eater will fit almost every need. They are easy to use, reliable and powerful. Nowadays they are almost the same as a gas powered one, but a fraction of the cost. Even if you have a larger yard, the battery life in the ones mentioned above will be long enough to get through an average to large sized yard. For the price, you really can’t beat the value with what you get.


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