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Greenworks 40V 12-Inch Cordless String Trimmer, Battery and Charger Not Included, BST4000

4.4 4.4 out of 5 stars 5,447 ratings

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12" Trimmer Tool Only

Purchase options and add-ons

Brand Greenworks
Power Source Battery Powered
Color Green
Item Weight 6.5 Pounds
Cutting Width 12 Inches

About this item

  • High Performance G-MAX 40V Lithium-Ion Battery delivers fade-free power with no memory loss after charging
  • 12-inch cut path with .065 dual line with auto-feed head to rip through weeds for fast trimming
  • Variable speed trigger for power on demand
  • Compatible GreenWorks Replacement Spool, Model 2900719
  • Battery and Charger Not Included - Compatible with GreenWorks G-MAX 40V Lithium-Ion Battery Models 29472 and 29462 and Charger Model 29482

Customer ratings by feature

Easy to use
4.4 4.4
Battery life
4.2 4.2
Maneuverability
4.2 4.2
Light weight
4.0 4.0

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$74.99
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Greenworks 40V 12-Inch Cordless String Trimmer, Battery and Charger Not Included, BST4000
Greenworks 40V 12-Inch Cordless String Trimmer, Battery and Charger Not Included, BST4000
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Greenworks 40V 12" Cordless String Trimmer, 2.0Ah Battery and Charger Included
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Price$74.99$99.99$129.99$59.99-17% $114.00
List:$138.00
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Sunday, Mar 31
Customer Ratings
Easy to use
4.4
4.8
3.0
3.0
4.4
Battery life
4.2
3.7
4.2
4.2
4.2
Maneuverability
4.2
4.1
4.0
4.0
4.2
Light weight
4.0
4.1
4.2
4.2
4.0
Sold By
Amazon.com
Amazon.com
Amazon.com
Amazon.com
Amazon.com
power source
Battery Powered
Battery Powered
Battery Powered
Battery Powered
Battery Powered
cutting width
12 inches
15 inches
12 inches
12 inches
12 inches
voltage
40 volts
40 volts
40 volts
assembly required
weight
6.5 pounds
9.23 pounds
6.84 pounds
9.2 pounds

From the manufacturer

0.065“ dual quiet line
dual line system
adjustable cutting swath
variable speed trigger
Multi-Protection Technology
40V FAMILY

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Greenworks

Greenworks 40V 12-Inch Cordless String Trimmer, Battery and Charger Not Included, BST4000


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Product Description

greenworks GMAX 40V System offers a wide range of easy to use tools for the homeowner and those who just want more power. This 12-inch cordless string trimmer features an front mount motor for optimum balance. Light weight and easier to use, it has a variable speed trigger for power on demand, 12-inch cut path, .065 line diameter auto feed head for easy line advancement. Designed for ease of use and comfortable operation without the hassle of gas.

Customer reviews

4.4 out of 5 stars
4.4 out of 5
5,447 global ratings

Customers say

Customers like the ease of use and power of the string trimmer. For example, they mention it's easy to assemble and use, has great power, and can handle it fairly easily. That said, they're happy with performance. That being said, opinions are mixed on quality, value, battery life, and weight.

AI-generated from the text of customer reviews

329 customers mention230 positive99 negative

Customers are mixed about the quality of the string trimmer. Some mention it's a strong weed whacker that clears grass and weeds, the trimmer itself feels sturdy, and it is heavy duty. However, others say that the string system is not good, the swath is too small, and the line breaks far too easily. The advancement of the line is still an issue, and some customers report that the pre-loaded string holders jam almost immediately.

"...cheap ones ( gas or battery) not because of the battery just a solid build. I hade some doubts about the hard plastic head unit but so far so good...." Read more

"...This trimmer works great at that! My only issue is that the string doesn't bump to feed out...." Read more

"...It is still functioning, however the string advancement is still an issue. I am now looking to see if I can replaced the head with something else." Read more

"Does exactly what I want. Strong weed whacker that clears grass and weeds very easily. Charges fast and lasts a long time. Easy to assemble and use." Read more

315 customers mention222 positive93 negative

Customers find the string trimmer easy to assemble and use. They say they can handle it fairly easily. They appreciate the extra spool and the ability to change lines easily. Customers also mention that the machine requires no pulling to crank and that it puts a bit of pleasure into yardwork. They also appreciate the power of the battery and motor, saying it can get the job done.

"...Play and plug... Very easy to install and very well made, exceeds expectations in function and build quality." Read more

"...$6o and it does the same job in the same time and is actually easier to use since it is lighter. Charges fast...." Read more

"...It works great, but is just hard to use w/o being able to shorten the pole." Read more

"...Charges fast and lasts a long time. Easy to assemble and use." Read more

310 customers mention270 positive40 negative

Customers like the performance of the string trimmer. They say it works well, is impressed, and is pleased with how well it works. Some mention that the device is very back heavy and that it works better around delicate areas like flower beds. Overall, most are happy with the performance and recommend it to others.

"...Play and plug... Very easy to install and very well made, exceeds expectations in function and build quality." Read more

"...It works great, but is just hard to use w/o being able to shorten the pole." Read more

"...Review update:!I used this yesterday and was pleased with how well it worked...." Read more

"...I have the Greenworks chain saw and it works good. I would recommend modifying the weed eater to include a strap to go around your shoulder...." Read more

171 customers mention168 positive3 negative

Customers are satisfied with the power of the string trimmer. They mention that it has plenty of power, is nicely balanced, and is just as effective as top of the line trimmers. Some say that the motor is more powerful than their electric mower and that the power easily cuts any grass, weeds, small woody stuff, and flowers.

"...Eats thru any thing lots of power. Long reach, heavier than the smaller cheap ones ( gas or battery) not because of the battery just a solid build...." Read more

"...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..." Read more

"...I did find the speed very decent and the cutting power was good as well...." Read more

"...Tons of power." Read more

383 customers mention250 positive133 negative

Customers have mixed opinions about the battery life of the string trimmer. Some are satisfied with the battery, saying it hardly uses any battery capacity after half an hour of continuous use. However, other customers say that the battery only lasts for about 30 minutes and charges less efficiently over time.

"...This does that...as good as a gas trimer, I'd go as far as say as good as a professional gas trimer. Eats thru any thing lots of power...." Read more

"...Strong weed whacker that clears grass and weeds very easily. Charges fast and lasts a long time. Easy to assemble and use." Read more

"...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..." Read more

"...Battery life should be good and to keep weight down i would recommend the 2AHReview update:!..." Read more

256 customers mention154 positive102 negative

Customers are mixed about the weight of the string trimmer. Some mention that it's light enough and easy enough for a 68-year-old, while others say that it gets heavy using it after a few minutes.

"...Eats thru any thing lots of power. Long reach, heavier than the smaller cheap ones ( gas or battery) not because of the battery just a solid build...." Read more

"...so makes it difficult to maneuver around, and it gets heavy using it after a few minutes...." Read more

"...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...." Read more

"...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..." Read more

143 customers mention94 positive49 negative

Customers have mixed opinions about the value of the string trimmer. Some mention it's a great product at a reasonable price, and the refills are not really expensive. They also say it'll last a long time and is easy to assemble. However, other customers feel it'd not be worth the money, the batteries are expensive, and it'n't suitable for commercial use.

"...Over all, it's a good product at a good price and comes with replacement spool and cap. I would reccomend it." Read more

"...And obviously even this 40V model is not suitable for commercial, every day use....." Read more

"First, this trimmer was inexpensive and on sale. It came with a battery and charger which is a good value. However, it is extremely light duty...." Read more

"Powerful and well worth the price." Read more

71 customers mention18 positive53 negative

Customers are dissatisfied with the size of the string trimmer. They mention that it's only about 3 inches long on each side of the trimmer head, it'll be a little too long for them, and it'd be clunky to use. They also say that the guard is small and the shaft is too long.

"...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...." Read more

"...For the long length and handling issue I had due to my long arms, I reversed how the handle is mounted on the shaft and this seemed to help out...." Read more

"...Eats thru any thing lots of power. Long reach, heavier than the smaller cheap ones ( gas or battery) not because of the battery just a solid build...." Read more

"Not for me. The shaft is to long. Heavy and difficult to use. I am short and have short arms.And I am OLD." Read more

Greenworks 40V string trimmer
4 Stars
Greenworks 40V string trimmer
This is a powerful trimmer. I have not had double-sided line and there is a difference. Not sure about battery power. It is not lightweight but seems to be balanced. There is a bracket enclosed that you could rig a shoulder strap to. I plan on doing this next- taking the one off my old trimmer. Some people complain about the tough safety button you have to depress to be able to use the machine- this is valid! I set about trying to turn it off but came up with a better solution! Take all the screws out on the right side of the housing (some of the screws are very deep in) but once they are all loose you can pry it half open. The black cover keeps you from taking it all the way off- don't worry about that- look in to where the triggers are and you will see the spring you see in the enclosed picture- TAKE IT OUT. The safety button is now VERY much easier to press and will not fatigue your thumb. You're welcome!Update: This trimmer uses .065" line. You will need to buy replaceable "cartridges" or have that size line on a spool. There are YT videos to instruct winding the lines- it doesn't look totally easy but i am determined to use the line I have bought! The battery seems fine and definitely lasts for all of the trimming I have to do around my 2 acre property. My old B&D trimmer would take two batteries worth of power, a pain to change since you are always the furthest distance from your 2nd when it dies.. I rigged up a shoulder harness as well. Just took it off my B&D and put the bolt through the bracket that is on the Greenworks shaft above the black handle. Makes it much easier on the back when adjusted properly!
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5.0 out of 5 stars Excelente Recortadora
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