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Gen4 40-volt, 20-in Self Propelled Battery Walk Mower with (Battery and Charger Not Included)

Ratings & Reviews for Kobalt Gen4 40-volt, 20-in Self Propelled Battery Walk Mower with (Battery and Charger Not Included)

4.2
869
Review
 4.2 out of 5
869 Reviews


75% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

This electric mower offers powerful performance that can handle moderately tall and thick grass, with a self-propelled feature for easy maneuverability. It has long-lasting battery life, a lightweight and user-friendly design, and quiet operation. While it may struggle with very tall or overgrown grass, it provides a smooth, convenient mowing experience for most residential lawns.

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

Kobalt Mower Doesn't Last

Would Not Recommend

I took care of this mower, but here we are. Cannot handle thick grass, and needs 2 batteries to cut really anything at all. Of course new models don't use the same batteries, so $500 down the drain for a mower and 2 batteries than lasted less than 3 years. I wouldn't buy a Kobalt mower again.

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Response from Kobalt Team

Hello Alex, we appreciate you taking the time to reviewing the Kobalt 20" Lawn Mower. All 40v Kobalt batteries are compatible with all Kobalt 40v...

Kobalt TeamApril 23, 2026

Chervon-Kobalt

Great quality and reliability!

Would Recommend

Amazing and reliable! Had one and had to get another one for my business!

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Metal deck

Would Recommend

Got this for a great price under 100 dollars and self propelled

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awesome mower

Would Recommend

ready to use right out of the box. lowes had this mower on sale and I didnt hesitate to get one. I use to have a kobalt 40v mower before and loved it. I prefer gas mowers so I got a Honda HRX 217 push mower. now I got a back up and love the new look on them.

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You don’t need a gas powered lawn mower.

Would Recommend

I like how it can be folded

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Problems

No way to shut off self propelled. there are times when self propelled does not help but causes problems. Due to weather, I've not been able to mow much but cutting up leaves seems to be a problem for it and that was the main reason I bought it.

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Response from Kobalt Team

Hi there! We appreciate you sharing your feedback on the Kobalt self-propelled mower. We would advise trying to use the self-propel lever to shut off...

Kobalt TeamDecember 15, 2025

Chervon-Kobalt

Thank you Lowes for providing the sale of this Kobalt Gen4 40 volt, 20 in Self Propelled Battery Mower. I have a Cobalt 40 volt mower but I needed Self Propelled. Kobalt in my opinion is the BEST!

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Expected more

Would Not Recommend

For the cost, I was very disappointed in the overall performance of this mower. I purchased it for mowing a small ditch that was too steep for my zero turn mower. I kept my grass mowed regularly, so it was never overgrown. However, this mower would cut off when I would mow, grass would build up underneath instead of throwing it out the side. Also, the battery worked great the first 5 or 6 times. After that, it gave out after 45 minutes

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Response from Kobalt Team

Hi there! Thank you for your review of our 20'' Mower. We are very sorry to hear that you are disappointed in the performance. We would be mo...

Kobalt TeamNovember 11, 2025

Chervon-Kobalt

Lawnmower,

Would Not Recommend

Not as as good as the first one, I bought 2 1/2 years ago, the lawnmower looks a little cheaper. I understand that you gave me a little bit bigger battery, but the whole unit was not as good as the other lawnmower I had, which is the same lawnmower, different. I can tell.

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Response from Kobalt Team

Hi there, Mario! Thank you for your review of our 40V Mower. We appreciate your feedback regarding its design. We will make sure that this is passed ...

Kobalt TeamNovember 13, 2025

Chervon-Kobalt

It handled my large back yard with zero issues.

Would Recommend

It's light and works well.

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★☆☆☆☆ Stay Away from Kobalt – Worst Customer Servi

Would Not Recommend

Follow-Up: Kobalt’s Response Proves They Don’t Care About Customers Kobalt replied to my original review with the same empty line: “We’re sorry you had an issue. Please contact customer service.” Let me be clear — I already did. I spent hours visiting five Lowe’s stores, speaking to multiple managers, and calling customer service, only to be told that the replacement blade is out of stock with no information on if or when it will ever be available again. Their only advice? Buy a new mower. Ex...

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Response from Kobalt Team

Hi there, Robert! Thank you for your feedback and review. We are sorry to hear that you have had a difficult experience thus far and apologize for an...

Kobalt TeamNovember 4, 2025

Chervon-Kobalt

Electric lawnmower

Would Recommend

Really enjoy see this product have a big front yard and small back and it did a great job.

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