Ryobi 40v Trimmer Review

Weed Eater Reviews

ryobi 40v trimmer review
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Whether you are a professional landscaper or an everyday homeowner, having a quality trimmer is the first step toward having a perfectly manicured property.

It is a vital tool to help you reach spots in your yard that would be otherwise impossible to get to with a basic lawnmower.

It can eradicate a lot full of weeds and dense grass without you having to do any back-breaking labor. 

But how do you choose the best weed trimmer?

There are many options on the market, but we wanted to share our Ryobi 40v Trimmer review to show why this model stands out as the clear winner.

Ryobi 40v Trimmer Review

Ryobi 40v Trimmer

The RYOBI 40-Volt Cordless String Trimmer is an amazing tool that will help you with all of your gardening and landscaping needs.

This battery-powered trimmer has cordless convenience while maintaining the performance of its gas-powered counterparts.

It comes with attachment capabilities, which gives this trimmer the versatility that is desirable in a power tool.

Who Is This Product For?

Since this trimmer is battery powered, it is the perfect tool for the everyday homeowner who has some serious gardening or landscaping projects to work on.

The convenience of not having to worry about mixing gas and oil is a big selling feature of this trimmer and makes it ideal for those who might be worried about keeping gas in the shed.

The 40-volt battery is powerful enough to chop down difficult weeds and lasts a surprisingly long time, considering the small size of the battery.

Not having to rely on a power cord means that it’s great for people who need it to work in remote locations.

However, it will only last for about an hour if you are running it nonstop, so having a backup battery is necessary if you are planning on using it in this manner.

For this reason, we felt it necessary to specify in our Ryobi 40v Trimmer review that this is the perfect piece of equipment for homeowners and landscapers with smaller sized properties to maintain.

Those needing to cut down vast portions of heavily weeded land might want to look elsewhere.

The RYOBI 40-Volt Cordless String Trimmer probably wouldn’t be the ideal weed trimmer for commercial use either.

What’s Included?

The RYOBI 40-Volt Cordless String Trimmer comes with things you need to get your weeding projects started.

You will receive the trimmer itself, the 15-inch width cutting string, the 40-volt lithium-ion battery, plus the 90-minute charger for the said battery.

In addition, you will receive the grass shield, the front handle, and the owner's manual.

RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable String Trimmer, 4.0 Ah Battery and Charger Inc
  • Attachment capable: accepts RYOBI expand-it attachments and other universal gas attachments to save time, money and space
  • 40-Volt lithium-ion high capacity battery and 90-minutes charger included
  • 13 in. to 15 in. adjustable cutting width for longer run time or wider cutting path

Overview of Features

Now, let's look at the specifications of this amazing trimmer.

There are many perks to this model, and we will break them down separately below.

  • Battery-Powered

The RYOBI Cordless String Trimmer is battery powered with a 40-volt lithium-ion, high-capacity battery. The power of this battery is incredible and stands up to even gas-powered models.

One of the concerns with battery-powered trimmers is the additional weight, but with this Ryobi model, the battery is still fairly light, bringing the overall weight of the tool to just over nine pounds.

In addition, we were surprised by how long the battery lasted on this trimmer, considering we put it to good use.

As mentioned previously, with a full battery, the RYOBI 40-Volt Cordless String Trimmer should last up to one hour.

Battery life is a huge factor that determines not only how long you will be able to use your trimmer but also will determine how big of a project you can take on at one time.

You can easily get a small to medium-sized yard finished with one charge, although you need a spare battery for more intense and time-consuming projects.

The charger for this trimmer is guaranteed to have your battery recharged within 90 minutes.

  • Auto-Feed String Head

The RYOBI 40-Volt Cordless String Trimmer also boasts an auto-feed string head, which is usually reserved for gas-powered models.

This feature makes reloading and lengthening string easy and convenient.

The easy bump feed mechanism allows you to simply bump the head of the trimmer on the ground to feed out more string.

Additionally, this trimmer makes it easy to adjust your cutting line, which will give you a longer run time or a wider cutting width, depending on your project.

This versatility makes it great for people who need to use their trimmers for an assortment of gardening tasks, from grass cutting to chopping down a thicker brush.

  • Variable Speed Trigger

The variable speed trigger of the RYOBI 40-Volt Cordless String Trimmer gives the operator the ability to control the speed and power of the tool.

It will give you greater cutting control, which is a big perk when working in gardens with hefty weeds close to delicate plants.

It also means you can save power when completing lighter trimming tasks.

  • Attachment Capable

Perhaps the best selling point of the RYOBI 40-Volt Cordless String Trimmer is that you can use a host of other attachments, which means you can attach any other Ryobi "Expand-It” attachments, as well as other gas attachments that offer a universal fit.

This feature is quite impressive since you can purchase this one trimmer and several attachments for it.

You can even recycle the attachments from your older Ryobi equipment, and you’ll effectively have as many different tools as you have attachments for.

We especially love the fact that our old Ryobi Blower head attached greatly, so we could blow away the weeds we had just hacked down.

  • Durable String

This trimmer might use a single string line, but it is also dual string, which means the string will be more durable than other single string trimmers.

While you might not be able to take down small saplings, you will get twice the speed and power out of the dual string as you would the single string.

  • Lightweight

The RYOBI 40-Volt Cordless String Trimmer is very lightweight for the power it packs.

At only nine pounds, it is conveniently light enough for most people to use it comfortably as long as they need it.

With the battery and the cordless nature of the tool, you won’t have to worry about bulky gas tanks adding weight to this machine.


  • Powerful, easy-to-recharge battery
  • Easy to feed string head
  • Easy and convenient string reloading
  • Variable speed trigger
  • Maximum control over cutting
  • Attachment capable
  • Lightweight
  • Durable string


  • Battery life shorter than gas-powered models
  • Suitable for yards up to one acre but not more
  • No warranty

How to Get the Most Out of the RYOBI 40-Volt Cordless String Trimmer

To get the most out of your Ryobi trimmer, you will need to operate it properly. There is not much set up involved in getting your trimmer assembled, which is a perk of this model.

However, caring for the battery is an important part of maximizing the lifespan and the efficacy of your trimmer.

The battery is made of lithium-ion, which means it will not lose power over time.

That is great for the RYOBI 40-Volt Cordless String Trimmer's lifespan but it means you have to make sure you charge the battery properly.

It is a good idea to remove the battery pack from the charger once fully charged, so as not to put unnecessary strain on the battery.

Another thing to consider is the temperature in which you are operating your trimmer or storing your battery.

These batteries function in temperatures as low as -4 degrees Fahrenheit.

In temperatures lower than that, your trimmer will struggle, which will put a strain on the battery.

For proper storage of your battery, try to keep it in temperatures under 80 degrees Fahrenheit in a dry place and be sure to store them with at least 30% battery life remaining.

Once you understand the proper storage and operational techniques for preserving the battery, you will find that the RYOBI 40-Volt Cordless String Trimmer is a straightforward machine, making it an excellent choice for beginners!


Another great option to consider in the world of cordless trimmers is the Greenworks 12-Inch 40V Cordless String Trimmer.

This model has the same voltage battery as the Ryobi and comes with the battery pack and the charger.

It has a slightly shorter string at 12 inches, but not too short that it won’t complete the majority of tasks around the garden that you need to get done.

The string on the Greenworks trimmer is also double-lined, so it is durable enough to hold up to hefty and overgrown weeds

But, like the Ryobi, it probably won’t make it when up against a tree sapling.

The Greenworks trimmer also has the option to add either a two-year or a three-year protection plan.

Unfortunately, one full charge of the Greenworks model will only last around 30 minutes, which is fine for small projects, but will not be sufficient if you have a larger yard.

In fact, the Greenworks model can only handle up to a half-acre of land with one charge.

The Greenworks is also a bit heavier than some other models on the market, weighing in at around 15 pounds.

If you are a seasoned landscaper, this weight might not be a problem, but for a beginner, the weight could be a bit exhausting, especially when tackling hefty, thick weeds.


To wrap up our Ryobi 40v Trimmer review, we think the choice is pretty clear.

The Greenworks trimmer is great for certain things and small gardening jobs, and it stands up pretty good to the Ryobi 40v.

The warranty is also a great plus, which the Ryobi is lacking.

Nonetheless, many of the perks of the Greenworks model are also shared with the Ryobi.

For example, both have 40 volts batteries and dual string cutters. They are both durable products and will not leave you stranded in the middle of a project.

But at the end of the day, the Ryobi’s lighter weight and the longer-lasting battery make it a better choice.

The fact that the Greenworks trimmer will only last for 30 minutes limits the size of the projects you can complete with one charge.

The attachment capable feature of the Ryobi is a huge selling point, as well. 

The many different attachments mean you can essentially make as many various tools as you have attachments while using the battery and shaft from the same Ryobi trimmer.

We hope our Ryobi 40v trimmer review will help you make the best choice when selecting your new trimmer!

We know the Ryobi trimmer will make a great addition to any household.

About the Author

Steve has been gardening for over 20 years now. He enjoys sharing his experiences with others.

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