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Kobalt 24-Volt 24-volt 12-in Straight Cordless String Trimmer (Battery Included)

42 Reviews
  • Kobalt’s high-efficiency brushless motor provides more run time and longer motor life – the run time is 40 minutes with the included Kobalt 24-volt max 4.0-Ah battery
  • Trimmer has a 12-in swath ideal for the average lawn
  • Bonus Item included: Free 4.0Ah battery

$126.65

Tame your lawn and garden with the 24-volt max Kobalt String Trimmer. The kits includes 2 4.0Ah 24-volt max batteries which will double your runtime. The String Trimmer is driven by Kobalt’s brushless motor to deliver more power, longer run times, and reliable, long-lasting motor life. The 0.080-in dual-string line feed provides excellent cutting efficiency; the line is advanced with a convenient bump head. The 24-volt max Kobalt String Trimmer features a variable-speed trigger for finger-tip control from 5,800 to 7,100 RPM and a professional-grade straight shaft.
  • Kobalt’s high-efficiency brushless motor provides more run time and longer motor life – the run time is 40 minutes with the included Kobalt 24-volt max 4.0-Ah battery
  • Trimmer has a 12-in swath ideal for the average lawn
  • Bonus Item included: Free 4.0Ah battery
  • Kobalt’s 5-year warranty on the tool, and a 3-year warranty on the battery and charger, gives you peace of mind
Weight 12 lbs
Dimensions 9.45 × 37.5 × 3.94 in

Latest reviews

  1. FredS

    I purchased the 24 volt trimmer and the blower with battery and charger included. The trimmer was semi assembled. You need to loosen the 2 factory security hex bolts (T-30) in order to align the 2 holes on the other side of the pole so that you can install the other included hex bolts. The security bit (T-30) has a hole at the tip(see photos). You need to get this before you try to assemble the pole See photos #1 and # 2 for the security bit. Photo #3 loosening the two factory installed bolts until you can align the two holes on the adjacent pole. Then insert the included hex bolts and alternately tightened all 4 bolts.

  2. trev

    The hex screws will fit perfectly and effortlessly IF you simply loosen the 3 other screws (one hex and two star) allowing the hinging brackets to align.

  3. Homer

    I wanted to love this. I think I still might, but right now the handle is so badly misaligned that I can’t screw in the bolts to hold the handle together. I know there are suggestions as to what type of tool I would need to get it loosened so I can try to align it properly, but I shouldn’t have to drive the 30 mile round trip to go back to and repair a brand new item before I can even use it!! VERY DISAPPOINTING!!

  4. Webb

    I really wasn’t expecting this lil guy to do much. Boy was I surprised. I did 2/8 acre in two bars if battery. That’s half a charge. Ge torque is unbelieveable . If you are trying to decide whether or not to buy one. Buy it . You’ll be very pleased with it.

  5. Kevin

    I didn’t know about getting this trimmer since the cutting swath is only 12 inches, but saw a price drop and got the tool only for $56. The 0.08 line it comes with wears out too fast, so I used 0.095 line against the manufacturer recommendation, but I used it a few times and no problems yet. It’s light, I don’t smell like gas, and the 4AH battery lasts it a good while. Sometimes the plastic trigger catches, but for $56 what do you expect. If you already have Kobalt 24V tools, it might be worth it for a typical homeowner. If you don’t have any Kobalt 24V tools and/or have a large yard, buy something with more power (or even a cheap gas trimmer).

  6. Danny

    as many other people i had the same issue with the hinge not lining up so the two screws could be installed. even after loosning the other three screw it would not line up to be assembled. had to retap the threaded holrd to get the screws to go in. then when using i bumped it to get the line to advance and it would not. Discovered the line was wrapped in the WRONG direction on the spool..so if you have a tap and die set and a SECURE star bit set and can follow the arrow on the line spool it will work fine, balances good and light weight. hopefully is reading these reviews so changes can be made to correct the hinge problem so many people had.

  7. Sonnybear

    I purchased this 24 volt trimmer because it was a lighter weight than my husband’s 40 volt trimmer. 5 pounds versus almost 8 pounds. I’m 65 & my muscles aren’t quite like they used to be. This trimmer has been used three times at 30-45 minutes per session. The last session I used the trimmer for 45 minutes with power to spare on the battery. I kept hoping the charge would run out so I could quit. It cuts the grass very well, the string lasts & I have not had to add string to the spool. We have a large area to trim with the house, barns, flower areas, trees & woods. I think this will be a good trimmer for me. My husband, at 72, may decide to use my trimmer for a break.

  8. Trey

    I was skeptical going for the 24v model, but I have a handful of kobalt 24v tools, so I liked that my batteries could all be interchangeable and I didn’t have to buy expensive spares. I have a very small yard, and an expensive gas model just didn’t make sense. Also, it comes with a large 4AH battery which is $50 on its own. So, reasons for purchase aside, I was very surprised at the power this thing has. Perfect for our needs! No mixing gas or pulling a string a hundred times to no avail. I’m a big fan of kobalt battery tools. It’s the people who try and use this to do acres of yard, when they should’ve bought a gas model, that complain that the battery doesn’t last.

  9. NiccusNamus

    as all it’s competitors. The pole needs to extend back an additional foot or so behind the handle so the battery becomes an effective counterweight, and both your arms share the weight of the tool. As it is, the front arm caries all the weight, plus the force you have to press down with the rear arm to keep the cutter off the ground. There is no way to modify it after the fact to fix it (yes, I took it apart with that in mind). They need to make and sell a rigid plastic extender that mates with the battery receptacle on one end and the battery on the other.

  10. Jane

    I have been using cordless weedeaters for as long as they have made them….My old black and decker 18 volt finally gave out so thought I would try something with a little more power so I purchased this Kobalt 24 Volt~~~~~I absolutely hate this weedeater. Very poor design……. It is fairly light weight but the pole does not telescope so I have to crank my arm way back to hold it and which causes my shoulder to ache after about 5 minutes. Definitely NOT ergonomically designed. Constantly have to tap it for more string. I am returning it. I have already ordered my new Black and Decker 40 Volt Max WITH a telescoping pole.

  11. Lew

    We bought this because the wife has a very hard time starting a gas trimmer. When we opened the box, we discover the trimmer is mostly assembled and has a hinge in the middle of the shaft and it has to be straighten out and 2 bolts installed to keep it straight. Too bad the hinge assemblies were drilled at an angle so the bolts will never be able to go through. As a precision machinist it galled me to the core.
    1. It is not hard to make a drilling jig to prevent this.
    2. The person drilling it should have enough skill to see the error and fail the parts.
    3. Quality control inspections should catch this from ever happening.

    I did not return it. I just set it up on the milling machine and redrilled the holes 2 sizes over to get the bolts to go.

    In the first photo you can see the hole has a casting mark on the left side. The second photo shows how it was drilled out to repair it.

  12. zippityz

    I bought this as part of the package deal with the blower. This trimmer works great: the battery lasts more than long enough to trim my .3 acre, and it’s surprisingly powerful. My one complaint is that I can’t use it for more than a few minutes without getting pelted in the face with debris. Frankly, at times it crosses the line from annoying to actually hurting. The protective shield is far too small to deflect everything. If I open my mouth for more than a few seconds I’m guaranteed to have something fly it. I’ve never had this happen on such a regular basis with other trimmers I’ve used. Based on this I cannot recommend this trimmer.

  13. FredS

    I purchased the 24 volt trimmer and the blower with battery and charger included. The trimmer was semi assembled. You need to loosen the 2 factory security hex bolts (T-30) in order to align the 2 holes on the other side of the pole so that you can install the other included hex bolts. The security bit (T-30) has a hole at the tip(see photos). You need to get this before you try to assemble the pole See photos #1 and # 2 for the security bit. Photo #3 loosening the two factory installed bolts until you can align the two holes on the adjacent pole. Then insert the included hex bolts and alternately tightened all 4 bolts.

  14. trev

    The hex screws will fit perfectly and effortlessly IF you simply loosen the 3 other screws (one hex and two star) allowing the hinging brackets to align.

  15. Homer

    I wanted to love this. I think I still might, but right now the handle is so badly misaligned that I can’t screw in the bolts to hold the handle together. I know there are suggestions as to what type of tool I would need to get it loosened so I can try to align it properly, but I shouldn’t have to drive the 30 mile round trip to go back to and repair a brand new item before I can even use it!! VERY DISAPPOINTING!!

  16. Webb

    I really wasn’t expecting this lil guy to do much. Boy was I surprised. I did 2/8 acre in two bars if battery. That’s half a charge. Ge torque is unbelieveable . If you are trying to decide whether or not to buy one. Buy it . You’ll be very pleased with it.

  17. Kevin

    I didn’t know about getting this trimmer since the cutting swath is only 12 inches, but saw a price drop and got the tool only for $56. The 0.08 line it comes with wears out too fast, so I used 0.095 line against the manufacturer recommendation, but I used it a few times and no problems yet. It’s light, I don’t smell like gas, and the 4AH battery lasts it a good while. Sometimes the plastic trigger catches, but for $56 what do you expect. If you already have Kobalt 24V tools, it might be worth it for a typical homeowner. If you don’t have any Kobalt 24V tools and/or have a large yard, buy something with more power (or even a cheap gas trimmer).

  18. Danny

    as many other people i had the same issue with the hinge not lining up so the two screws could be installed. even after loosning the other three screw it would not line up to be assembled. had to retap the threaded holrd to get the screws to go in. then when using i bumped it to get the line to advance and it would not. Discovered the line was wrapped in the WRONG direction on the spool..so if you have a tap and die set and a SECURE star bit set and can follow the arrow on the line spool it will work fine, balances good and light weight. hopefully is reading these reviews so changes can be made to correct the hinge problem so many people had.

  19. Sonnybear

    I purchased this 24 volt trimmer because it was a lighter weight than my husband’s 40 volt trimmer. 5 pounds versus almost 8 pounds. I’m 65 & my muscles aren’t quite like they used to be. This trimmer has been used three times at 30-45 minutes per session. The last session I used the trimmer for 45 minutes with power to spare on the battery. I kept hoping the charge would run out so I could quit. It cuts the grass very well, the string lasts & I have not had to add string to the spool. We have a large area to trim with the house, barns, flower areas, trees & woods. I think this will be a good trimmer for me. My husband, at 72, may decide to use my trimmer for a break.

  20. Trey

    I was skeptical going for the 24v model, but I have a handful of kobalt 24v tools, so I liked that my batteries could all be interchangeable and I didn’t have to buy expensive spares. I have a very small yard, and an expensive gas model just didn’t make sense. Also, it comes with a large 4AH battery which is $50 on its own. So, reasons for purchase aside, I was very surprised at the power this thing has. Perfect for our needs! No mixing gas or pulling a string a hundred times to no avail. I’m a big fan of kobalt battery tools. It’s the people who try and use this to do acres of yard, when they should’ve bought a gas model, that complain that the battery doesn’t last.

  21. NiccusNamus

    as all it’s competitors. The pole needs to extend back an additional foot or so behind the handle so the battery becomes an effective counterweight, and both your arms share the weight of the tool. As it is, the front arm caries all the weight, plus the force you have to press down with the rear arm to keep the cutter off the ground. There is no way to modify it after the fact to fix it (yes, I took it apart with that in mind). They need to make and sell a rigid plastic extender that mates with the battery receptacle on one end and the battery on the other.

  22. Jane

    I have been using cordless weedeaters for as long as they have made them….My old black and decker 18 volt finally gave out so thought I would try something with a little more power so I purchased this Kobalt 24 Volt~~~~~I absolutely hate this weedeater. Very poor design……. It is fairly light weight but the pole does not telescope so I have to crank my arm way back to hold it and which causes my shoulder to ache after about 5 minutes. Definitely NOT ergonomically designed. Constantly have to tap it for more string. I am returning it. I have already ordered my new Black and Decker 40 Volt Max WITH a telescoping pole.

  23. Lew

    We bought this because the wife has a very hard time starting a gas trimmer. When we opened the box, we discover the trimmer is mostly assembled and has a hinge in the middle of the shaft and it has to be straighten out and 2 bolts installed to keep it straight. Too bad the hinge assemblies were drilled at an angle so the bolts will never be able to go through. As a precision machinist it galled me to the core.
    1. It is not hard to make a drilling jig to prevent this.
    2. The person drilling it should have enough skill to see the error and fail the parts.
    3. Quality control inspections should catch this from ever happening.

    I did not return it. I just set it up on the milling machine and redrilled the holes 2 sizes over to get the bolts to go.

    In the first photo you can see the hole has a casting mark on the left side. The second photo shows how it was drilled out to repair it.

  24. zippityz

    I bought this as part of the package deal with the blower. This trimmer works great: the battery lasts more than long enough to trim my .3 acre, and it’s surprisingly powerful. My one complaint is that I can’t use it for more than a few minutes without getting pelted in the face with debris. Frankly, at times it crosses the line from annoying to actually hurting. The protective shield is far too small to deflect everything. If I open my mouth for more than a few seconds I’m guaranteed to have something fly it. I’ve never had this happen on such a regular basis with other trimmers I’ve used. Based on this I cannot recommend this trimmer.

  25. PatD

    Easy setup. Easy replacement of string. Easy use. It came with two batteries and charger which alone cost around $130. I like that the motor is in the head which helps balance out the battery by the handle. The down side of this is that there’s no replacing it with an after market head, but the quick string release worked fine, so there’s no need. At 12″, it is a little smaller of a swath then gas trimmers, and it’s not as powerful. But it fits perfect for my 2-3 times a year use, and now I don’t have to worry about all the maintenance and things that can go wrong with a gas trimmer. Definitely well worth the money.

  26. Will

    I already had quite a few Kobalt 24v tools so the 4Ah battery was a selling point for me. The reports that the assembly holes don’t really line up are accurate but it is not nearly as big of a deal as some people are saying. Less of a “need to re-drill” and more of a “just wiggle it through” type situation. As far as performance this thing is great really. Extremely light weight, tons of power, and the battery is about twice as much as it needs to be for me on a half acre lot with a smallish back yard. The guard is a little flimsy, as others have noted, but it does the trick. Wear closed toed shoes and safety glasses like you should anyway and it won’t bother you.

  27. Joe22222

    Pros: uses the same battery as my other tool set and I’ve liked those for my needs. Reasonable price. Fairly lightweight compared to some other tools.

    Cons: Really blew through the initial spool in a half hour of use so maybe I needed a bigger machine – not sure. Battery power was fine though! The spool isn’t the most fun to take apart if you don’t know how it works. Reading the manual helped figure that out. The guard is maybe a little small – I’m not sure though. Many people don’t like how the bolts that hold the handle together are a bit off. They were off but if you just take your time it fit just fine so not really a concern maybe more feedback if they were able to improve that in the manufacturing process.

  28. TimToolman

    I have had this tool for 2 summers in Florida. Unfortunately, I did not realize this tool cannot swap the trimmer head for the edger head. Most trimmers you can buy an edger head separate and swap out when the job requires but not this one. I bought it when it was $70 but not it looks like its going for $120. I would phase this one out . On the other hand, this tool has held up pretty well I have used it to substitute edging which does work fairly well. But if you have some really thick crab grass this one is going to struggle to knock it down. Buy it or don’t; its an all right tool.

  29. Mosas

    If the trimmer line is a little too long it shuts the motor off. I removed the guard to run my line a little longer and it puts the machine in a fault mode. Trim the line super short and runs fine. Weak motor. Waste of money imo. Spend a little more and buy something decent. Customer support said they cannot help me as this product has no technical support. Went round and round in a circle sending me to the same person and the same questions over and over…..FRUSTRATING. Would not recommend

  30. Brian

    Was very skeptical about this purchase. The weed eater i was using was a poulan pro 56 volt, so i literally cut the volts by over half. I opened the box, and is was extremely easy to assemble. Charged up the batteries and tested it in heavy weeds….was NOT disappointed!!! This weed eater not only weighs less, but has more power and the same run time. Just ordered a. Second one….if your in the fence, order thing thing and trim it!!!!!

  31. CodaZoda

    I’ve owned it for 2 seasons now and it’st always a fight. I have the full ecosystem of Kobalt 24v tools now and I love them all, except this trimmer. I live on a corner lot with a sidewalk plus 600 feet of cement curbing, so I’ve got a lot of trimming to do. The 4Ah battery lasts the entire yard, but the joy stops there. This trimmer is awkward to hold, difficult to load, and eats string like it’s going out of style. I need two full spools to finish my yard and removing the old spool requires a flat top screwdriver or other prying tool. Sometimes, the twine gets caught up inside and you have to remove and correct it. At the end of the day it’s just a constant fight. I plan to purchase something else.

  32. EricInUtah

    What I like about this trimmer is the rechargeable battery, instant on power and long battery life. It is much less of a pain to deal with and maintain than my gas trimmer. What I don’t like is the length of the trimmer line. I am used to a longer line and it just seems like with this trimmer I am always having to advance the line because it gets too short. It is fine for my 1/4 acre lot, but for bigger jobs I think I would still go with a more robust trimmer.

  33. Ecrossh95

    I have several kobalt 24 v brushless tools and all gave been good until this one. Start switch very hard to make release / pull in unless you hold shaft vertical them it releases more than it catches. (Backside safety of course must be depressed but when it is i had to squeeze trigger hard enough felt like it would break soon. ) Ran several quick trials to learn the vertical trick but no way am i going to keep this tool. Nice looking unit, ran once it released — if you want a weedeater Stick with a manufacturer that makes weedeaters.

  34. Brizzy

    Bought this today and used it right away on 5/16/21. This thing is legit absolutely will take care of what you would need and I am very impressed. The 2 star rating though is what everyone else complains about is the line feed issue. It’s a double feed line and one snapped off right away so I was cutting with one line. I had to pull that line out and now both are running so short I have to be touching what I’m trimming with the weed whacked. If kobalt fixes this then they will take over the market %100. I got a cordless black n decker and that’s been the best so far all around. But powrr wise this thing rocks.

  35. Jackwade

    Bought this tool because I had other 24 volt Kobalt tools. It was fairly easy to put together but it eats string like its going out of style, and it’s almost impossible to change the string without using a screwdriver to depress the tabs. I am in my 70’s now and I don’t have the hand strength that I used to. The string comes pre-wound, which is nice but quite often comes tangled where you have to remove the spool to fix it. The spools run out very fast also and at $10.00 a spool is a little pricey! Especialy since other makers give you FREE spools for the life of the tool!

  36. FormerKobaltBuyer

    The release tab on one side of the spool base broke and then the head spun and bent the entire head assembly jamming the bump knob inside the spool and damaged so it’s inoperable. Need an entirely new head. doesn’t stock any replacement parts other than the spool itself. I’ve had the weed eater for about 18 months and sad to call a customer service number, but the manual says to take it back to place of purchase to be replaced or repaired at no charge under warranty. Last Kobalt product I will buy.

  37. Donnie

    Trimmer is a monster with plenty of power for whacking or edging. The designer of the string replacement spool and head should be in a Chinese prison. If you are over 70 the tabs to push to remove the head are very hard to compress. Once you wind on 15 feet of string to the empty spool the slots that are supposed to hold the string while you put on the bump head will not hold the string. You need 3 hands. Battery is quite hard to remove, also. Very tight on the machine.

  38. NCThomas

    Looking to get a cordless to replace my still running good but old corded trimmer. Tired of dragging the cord around. I compared the 24 volt to the 40 volt. It really depends on what you’re cutting and how large an area. I dont really need anything like a 60 or 80 volt trimmer. I watched the 24 and 40 volt on Youtube and decided on the 24 volt. Watch this video on Youtube.
    ( Best Battery Powered String Trimmer For The Money! (THE TRUTH YOU WON’T ACCEPT). He does a lot of good reviews. He’s cutting large weeds, I just need it to trim grass around the house and fence. The 24 volt has plenty of power. It also helps I have a 24 volt Kobalt drill / driver that uses the same battery. The 40 volt I was considering. Just the battery itself, cost more than this trimmer, battery and charger. One tip though. The line cutter. Taking the tape off, I could see its from a stamped piece of metal, not much of a sharp edge. Before I even used it, I took it off and sharpened it on a stone. One bump and it instantly cuts the line. Plenty of power, it cut all I needed and no bogging down. When I finished cutting, I had half power left on the battery, and I was using my 24 volt 2.5 ah drill battery. So the 4.0ah battery should last a good while. No regrets yet. I’ll come back later for a review after I’ve used it a while.

  39. Anonymous

    I was on the fence about getting this or the larger version, but since I had 24v batteries for most of my tools already, I stuck with this. It works great, so far. I mean it isn’t going to cut through trees or bushes, but for grass, even longer thicker weeds, it works great. I wouldn’t hesitate getting it.

  40. Mark

    Assembly was simple and straight forward, took less than 5 minutes to assemble. I trimmed the entire yard in 15-20 minutes. Battery was fully charged and gave strong performance from start to finish. Trimmer is light weight and well balanced. I was looking for an alternative to a gas trimmer and am well pleased. Highly recommend.

  41. Mimi

    As an old woman with back issues this trimmer is very lightweight and easy to use. Just pop on a fully charged Kobalt battery and go. I have been using it for several months and have no complaints.

  42. Charles

    Never have been able to remove the string holder without using a screwdriver to get the cap off. Once new string is installed as directed it will not release when you tap the head. You have to take it apart and start over. To say I am dissatisfied with this product is an understatement.

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