Ratings & Reviews for Kobalt Gen4 40-volt 15-in Straight Shaft Battery String Trimmer
Ratings may include incentivized customer reviews.
What Customers Are Saying
The battery-powered trimmer provides good performance for most residential yard work, with a long-lasting battery, two speed settings, and a relatively lightweight and easy-to-use design. It cuts through grass and weeds effectively, though may struggle with thicker vegetation. The main drawbacks are the difficulty in restringing the trimmer head and the lack of availability for replacement parts. Overall, it is a solid choice for homeowners with small to medium-sized yards who want the convenience of a cordless trimmer.
Customer review summary generated by AI, including incentivized reviews.Powerful and silent. Very easy to use.
I have a small lawn, and this trimmer works like a dream to keep my lawn neat and tidy. It is quiet and powerful and very easy to use.
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included) Verified Purchaser
every thing great
Would Recommendworks great
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included) Verified Purchaser
It's priced reasonable....
Would RecommendIt seems to have plenty of power to be a battery powered weed trimmer and isn't to heavy.
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included) Verified Purchaser
000000000 rating
Would Not RecommendLowes, you see all of these horrible reviews about this same product, yet you continue to sell it without capability to have available parts. Make parts or throw away the design. It sucks! Better, just stop selling tjis garbage. you should be ashamed. ours had a broken head after a year.
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included)
good balance
Would Recommendeasy to use, fits my needs well. Need to go a little slower on extra heavy brush-weeds.
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included) Verified Purchaser
Weedeater
Would RecommendGreat piece of equipment
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included) Verified Purchaser
It’s an awesome trimmer
Would RecommendWell made
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included) Verified Purchaser
Trimmer line does not feed
Would Not RecommendLine feeder desgn is poor. Worked for about 6 uses then stopped letting out line when bumping head. Replacing string is not easy. Has nice power and is comfortable to use but since it no longer works I wish I had bought something else. Replacement head is way too expensive at $35.
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included)
Hello Matt. Thank you for reviewing the Kobalt String Trimmer. We apprecaite you sharing your experience regarding the design and assembly, and will ...
Not what made out to be / Don't waste your money!
Would Not RecommendPurchased in May (2025) and regret it ever since. Does not tread string like it shows, either way. Does not take all of the refill rolls, have to cut them in half. Then still have trouble getting it to work right. Will not extend by bumping all the time. At first thought I got a lemon one or it was just me. Should have read the comments BEFORE I bought it. I am a 66 year old woman and enjoy doing my yardwork. NOT with this though. Have had good experiences with Kobalt until now. Will be thinki...
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included)
Hello Kris! Thank you for reviewing the Kobalt Trimmer. We thank you for sharing your experience regarding the tool operations and performance, and w...
another good Kolbalt product
Would RecommendI like that the battery is the same across the Kolbalt products. I did have a little challenge getting the guard on, but otherwise works well and easy to use
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included) Verified Purchaser
what a waste of $160. they told me use the replacement spools and just put a new on in and bump feed will work. who ever designed this trimmer was a idiot. i had to stop three times to redo trim lines and you need three hands. you have to carry extra trim line with you to spend 20 minutes to put new line in. i really wasted money on this. i didn't think kobalt tools were designed this bad. i would like to get my $ back and buy other brand.
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included)
Hello Richard! Thank you for reviewing the Kobalt Trimmer. We appreciate you sharing your experience with the string trimmer spool and will be sure t...
great for the price
Would Recommendi like my weed eater very nice
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included) Verified Purchaser
The warranty from Lowes is great!
Would RecommendAnother great product to add to my lawn care equipment
From Gen4 40-volt 15-in Straight Shaft Battery String Trimmer 4.0 Ah (Battery Included) (Charger Included) Verified Purchaser
Hi, kat! We're very sorry to hear that you have not been able to find replacement parts for your Kobalt trimmer. Our Kobalt customer service team...