Kobalt 40-volt max 15-in Straight Shaft Battery String Trimmer 2.5 Ah (Battery Included) (Charger Included)
Item #1438122 |
Model #KST 2540-06
This item is no longer sold on Lowes.com
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40V gear reduced string trimmer with 2.5Ah battery gives you the power you need for yards up to 1/2 acre
Premium heavy-duty 0.080-in dual line feeds through a bump head, making it easy to power through tough grass and weeds
Adjustable cutting swath from 13-inch to 15-inch to allow for extended runtime or faster trimming
Easy to start variable speed trigger with two-speed settings offer complete control
Includes a charger and 2.5Ah 40-volt max Li-ion battery with a 75 minute charge time
Compatible with Kobalt 40-Volt max family of products
5 Year limited tool warranty and 3 year limited battery warranty
General | |||
|---|---|---|---|
Battery Voltage | 40-volt max | Application | Up to 1/2 acre |
Sub-Brand | N/A | Package Contents | String trimmer, line, guard, front handle, battery, charger |
Type | String trimmer | Charger Type | Standard |
Power Source | Battery | Shaft Type | Straight |
Grade | Residential | ||
Dimensions | |||
|---|---|---|---|
Adjustable Height | No | Weight (lbs.) | 7.7 |
Engine Oil Capacity (oz.) | 0 | Battery Amp Hours | 2.5 |
Line Diameter Measurement | 0.080-in | Amperage | 0 |
Shaft Length (Inches) | 39 | Cord Length (Inches) | 0 |
Features | |||
|---|---|---|---|
Assembly Required | Yes | Engine Displacement (Cu. Centimeters) | 0 |
Attachment Capable | No | Engine Oil Included | No |
Battery Included | Yes | Fuel Capacity (Fluid Oz.) | 0 |
Battery Recharge Time (Hours) | 1.25 | Line Feed | Bump |
Brushless | No | Line Included | Yes |
Charger Included | Yes | Lowe's Exclusive | Yes |
Corded/Cordless | Cordless | Number of Batteries Included | 1 |
Cutting Swath (Inches) | 15 | Single or Dual Line Feed | Dual |
Edger Conversion Capable | No | Voltage | 0 |
Warranty | |||
|---|---|---|---|
Warranty | 5-year limited | ||
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | Safety Listing | CSA safety listing | |
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 27112700 | ||
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Ratings may include incentivized customer reviews.
What Customers Are Saying
The battery-powered trimmer offers good cutting power and quiet, fume-free operation. It is lightweight and well-balanced, making it easy to maneuver. The battery life is generally good, and the two-speed motor and variable-speed trigger provide good control and efficiency. However, some users found it difficult to reload the trimmer line and noted a lack of availability for replacement parts. A few also felt the trimmer was a bit heavy and awkward for extended use.
Customer review summary generated by AI, including incentivized reviews.Exceptional performance
I have been using mine for 3 years now and it has worked flawlessly, It is very efficient with the battery life and just as if not more effective than the traditional gas powered tool
First time ever dissatisfied with an online Lowe’s
Product arrived poorly packaged, box open and when I took my purchase out of the shipping box it was obvious Lowe’s sent me an open boxed item. It was supposed to be an online exclusive so not even sure how that’s possible for an open boxed item. The manual is missing but I haven’t charged the battery to see if the product works because it’s a Christmas present. Hate leaving bad reviews cause I prefer Lowe’s for my shopping.
Verified Purchaser
Do not buy, you won't be able to get parts.
I have had this thing a few years now and I loved it up to this point. The bump head wore out. Thinking oh this was produced only 4 years ago, and they still sell it, surely there are replacement bump heads. No, absolutely not, nothing. The replacement part has been listed as unavailable forever. I called the Kobalt number as other reviews mention, but yet they don't have the part anymore either. They tried to direct me to a bump head that wouldn't even remotely work.
Hello Phoenix. We are sorry to hear of your experience. We appreciate your interest in this product, and we apologize for any inconvenience caused by...

Trimmer is a BEAST, Blower has nice features...BUT
Ok, first off let me say that ALL of my Tools are KOBALT brand. I have dozens of batteries, 8 chargers and more 24V tools (and hand tools) than i could count in a day. I obviously love the brand. With that being said, i saw a "deal" for a KOBALT string trimmer and leaf blower combo for the very enticing price of $129.00 for both, so i jumped on it. I got the last on in the store. The string trimmer is a beast, super powerful with a ton of torque and the leaf blower has a nice feature where you c...
spool replacement
it's difficult to find dual line replacement spool. sales people don't know the correct spool for it.
Verified Purchaser
Fantastic Weed Eater
I have had this weed eater for about a year now, and I finally had to add new line to it. I googled how to do that, and could not believe how easy it was. You cut off 13 feet of line, feed it through and wind it up.... VERY NICE and Easy!!! I also have the edger and one 40V battery and can do my whole yard and sidewalks and still have plenty of battery left. These 2 items put the finishing touches on making my yard Look Great!
Verified Purchaser
hard to get charger replacement under warranty
The trimmer works well. However beware that you may have to jump through hoops to get a charger replacement under warranty. Took me 3 weeks of calling many times and lots of e-mails to finally get the correct replacement. A shame since the trimmer itself works well so far, have used it for 1 year now. But if cannot charge battery it is of no use. Should not have to work so hard to get a charger replacement that is under warranty. I have also bought a Lowes lawnmower and Lowes blower that c...
Hello Trini - Thank you for taking the time to share your experience. Some issues can be tricky to diagnose over the phone as issues can present in d...

good for small or light trimming
I had issues with some of the larger weeds. The line or the speed wasn't sufficient to take down the tough stuff.
Verified Purchaser
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Hello Mill. Thank you for your review. We are sorry to hear the item was received in this condition. We recommend to either return or exchange the it...