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QUIET TECH 24-volt 15-in Straight Shaft Battery String Trimmer 4 Ah (Battery Included) (Charger Included)

Ratings & Reviews for Kobalt QUIET TECH 24-volt 15-in Straight Shaft Battery String Trimmer 4 Ah (Battery Included) (Charger Included)

4.4
184
Review
 4.4 out of 5
184 Reviews


81% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this trimmer for its lightweight design, quiet operation, and ease of assembly, with most noting it significantly outperforms gas models. Reviewers highlight powerful performance for light to medium yard work, cordless convenience, and 24V battery compatibility with existing tools. Many report strong battery life for typical yards, though some on larger properties note runtime limitations requiring 2.5-hour recharges. A few experience frustration with string replacement due to head design confusion, and several mention the unit cannot rotate 90 degrees for true edging capability. Overall, most customers find it reliable and user-friendly despite minor drawbacks.

Customer review summary generated by AI, including incentivized reviews.
184 Customer Reviews

Not worth it.

Would Not Recommend

For the money, you’re way better off spending a few more and getting the 48v version of this. There isn’t much power on the 24v. The battery life is as expected while using. It will drain the 4ah battery that’s included pretty quickly though so if you have a large area to go over then you’ll need to have extra batteries to finish it unless you want to wait for the battery to charge back up. The feeder works fine but the position of the handle is not ideal which will cause fatigue fairly quickly

October 8, 2026
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Response from Kobalt Team

Hi there, Richard! Thank you for sharing your feedback. We appreciate your comments regarding the power, battery runtime, and handle position, as com... Read More

Kobalt TeamOctober 8, 2026

Chervon-Kobalt

Amazing Weed Wacker!!!

Would Recommend

I bought this Cobalt Weed Wacker 3 weeks ago and it worked amazingly. It is powerful and sturdy and did a great job of clearing weeds close to the skirting of my house. It is a powerful machine that keeps a charge for a long time. Definitely recommend!!

October 4, 2026
Verified Purchaser
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Forget about reloading the twine

Would Not Recommend

Engineers love to go with theory rather than practicability. If anyone has found a way to reload the twine with their new system, I’d love to hear it. The twine will immediately jam and won’t hold tension because of the way you need to wind it, can’t even do it manually because the clips get in the way. Avoid this new design at all costs. (Also, all I own is Kobalt lawn equipment. It’s that bad.)

September 13, 2026
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Response from Kobalt Team

Hi there! Thank you for sharing your feedback on the Kobalt QUIET TECH 24‑Volt 15‑in Straight Shaft Battery String Trimmer. We understand how frustra... Read More

Kobalt TeamSeptember 15, 2026

Chervon-Kobalt

ITEM #7217306 MODEL #KST 2024B-03 STRING TRIMMER

Would Recommend

My string trimmer plastic spool cap needs to be replaced. I cannot find the exact part for this model. Does anyone know where I can find this replacement piece?

September 12, 2026
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Response from Kobalt Team

Hi there! Thank you for sharing your feedback on the Kobalt QUIET TECH 24‑Volt 15‑in Straight Shaft String Trimmer. If you're looking for a repla... Read More

Kobalt TeamSeptember 15, 2026

Chervon-Kobalt

no replacement head

Would Not Recommend

This trimmer worked for awhile, although the bump feature was a joke. Line would not extend. Took it apart, removed the old line, put in new line (what fun), snapped it together. Again it worked for awhile, then I only had one line and couldn't get the other one to work. Plus it was heavy for 79 yr. old.

September 11, 2026
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Response from Kobalt Team

Hi Rose! Thank you for reviewing your Kobalt KST 2124A-03 string trimmer kit. We're sorry to hear that the bump feed didn't work properly and... Read More

Kobalt TeamSeptember 11, 2026

Chervon-Kobalt

Garbage

Would Not Recommend

Avoid this brand it’s extremely difficult to replace the trimmer line so basically it’s garbage

August 15, 2026
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Response from Kobalt Team

Hi Jack! Thank you for reviewing your Kobalt KST 2124A-03 string trimmer kit. We're sorry to hear you've had trouble replacing the trimmer li... Read More

Kobalt TeamAugust 17, 2026

Chervon-Kobalt

Slightly better string replacement theory

Would Not Recommend

Out of the box, the string fed once, then seemed to be getting stuck together. Tried disassembling the head and feeding manually, but this didn’t work any better and the whole head contraption flew apart. The manual is useless as the directions ended up with the original factory provided string protruding from the spool on only one side. Time to find the receipt for a refund.

August 13, 2026
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Response from Kobalt Team

Hi there! Thank you for your review of our String Trimmer. We are very sorry to hear that the trimmer head was causing you some trouble. We would lov... Read More

Kobalt TeamAugust 14, 2026

Chervon-Kobalt

Kolbalt Weeder

Would Recommend

L9ved it really powerful,cuts the edges really deep and doesn't make a lot of noise like other brands I used to have.

August 3, 2026
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impossible to reload

Would Not Recommend

this trimmer is fine until you need more line. I had to take the cap off multiple times, then the lines came unraveled and i have spent the last hour getting eaten by mosquitos trying to get the line fed correctly. the manual is trash and only talks about the battery.

August 1, 2026
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Response from Kobalt Team

Hi Sean! Thank you for reviewing your Kobalt KST 2124A-03 string trimmer kit. We're sorry to hear that you're having trouble reloading the li... Read More

Kobalt TeamAugust 3, 2026

Chervon-Kobalt

Starts and Stops

Would Not Recommend

Bought this less than 3 months ago. Went to use it last week and it will start and immediately turn off. It is not the battery because I have a Kobalt blower and it works fine in it.

August 1, 2026
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Response from Kobalt Team

Hi there! Thank you for reviewing your Kobalt KST 2124A-03 string trimmer kit. Please double-check to make sure you are using the correct line and th... Read More

Kobalt TeamAugust 3, 2026

Chervon-Kobalt