Kobalt 40-Volt Cordless Lawn Mower, String Trimmer, Lawn Edger, Blower, Hedge Trimmer, & Backpack Sprayer Included Combo Kit (Battery & Charger Included)
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Item #3809896 |
Model #KSPM 1040A-03
Brushless motor offers increased power, longer run time and prolonged motor life
20-in steel deck offers long lasting durability
3-in-1 mulching/bagging/side discharge offers versatility for any mowing style
Self propelled rear wheel drive, with variable speed control, for maximum control and handling
Telescopic folding handle allows for convenient vertical storage
Single-lever 6-position deck height adjustment to quickly adjust for your preferred grass height
Push button start for easy operation
5 Year limited tool warranty and 3 year limited battery warranty
Compatible with the Kobalt 40V Family of 45+ Outdoor Tools
General | |||
|---|---|---|---|
Battery Voltage | 40-volt | Start Type | Push button start |
Series Name | Gen4 | Deck Material | Plastic |
Type | Self-propelled lawn mower | Drive Type | Rear wheel drive |
Power Source | Battery | Adjustment Type | Single-lever |
Battery Type | Lithium ion | ||
Dimensions | |||
|---|---|---|---|
Cut Height Adjustment | 6-position | Mower Deck Width (Inches) | 20 |
Cut Width (Inches) | 20 | Package Weight (lbs.) | 76.61 |
Front Wheel Size | 7-in | Rear Wheel Size | 9-in |
Maximum Cutting Height (Inches) | 4 | Weight (lbs.) | 59.2 |
Minimum Cutting Height (Inches) | 1.25 | ||
Features | |||
|---|---|---|---|
Bagger Included | Yes | Handle Adjustments | 6 |
Battery Included | Yes | Lowe's Exclusive | Yes |
Battery Run Time (Minutes) | 0.45 | Mulching Capable | Yes (included) |
Blade Stop System | No | Number of Batteries Included | 1 |
Brushless | Yes | Removable Battery | Yes |
Charge Time (Hours) | 3.6 | Self-Propelled | Yes |
Charger Included | Yes | Vertical Storage | Yes |
Collapsible | Yes | Battery 1 Amp-Hours | 6 |
Discharge Location | Rear | ||
Warranty | |||
|---|---|---|---|
Warranty | 5-year limited | ||
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | Safety Listing | cUL safety listing | |
Compatibility | |||
|---|---|---|---|
Recommended Yard Size | 1/4 to 1/2 acre | Replacement Blade OEM Part Number | KMBA 1040-03 |
Recommended Terrain Type | Flat with obstacles | ||
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 27112000 | ||
Ratings may include incentivized customer reviews.
What Customers Are Saying
The electric mower offers powerful and efficient cutting performance, able to handle moderately tall and thick grass. The self-propelled feature provides good traction and maneuverability, especially on slopes and uneven terrain. It has long-lasting battery life, with most users able to complete their entire lawn on a single charge. The mower is lightweight and easy to use, with simple height adjustment and intuitive controls. However, it may struggle with very tall or overgrown grass, and the self-propelled feature can sometimes be too fast or sensitive. The battery life could also be improved, especially when using the self-propelled mode extensively.
Customer review summary generated by AI, including incentivized reviews.★☆☆☆☆ Stay Away from Kobalt – Worst Customer Servi
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...
Self Propelled hurts Battery Runtime
I have now used the mower twice. I have a 0.3 Acre yard of Burmuda Grass. Usually takes me ~ 45 min to mow using gas self propelled mower. The first mow of the season, I usually step down the height 1 step to cut the brown tops off last year's mow, so that when the new grass grows, the height I mow, mostly the green will be visible most of the year. After I figured out the height comparison between my old gas and this mower, set the height one step down from my last mow, and I started on a w...
Verified Purchaser
Hello David,
We appreciate you reviewing the Kobalt Mower! We thank you for sharing your experience with the mower runtime. The runtime will be ...

The Gen4 40-volt, 20-in Battery Mower!
At the store I used the drive thru pick-up and was pleasantly surprised how easy it was. The large box fit easily in to the back of my Prius. The unboxing was simple and the only assembly was attaching the handlebars which was simple even for me. Someone with no mechanical ability at all. I charged the battery which was the most time consuming part of getting the mower ready. The instructions for operating the mower were easy to follow and within 5 minutes I was ready to start mowing. I chose to...
Verified Purchaser
40V must be better than 28V....or so I thought
There are some nice attributes about this mower that I like how easy it is to change the ride height of the mower and the adjustment for extending the handle, but the most important feature of a lawn mower is power. I have a very small lawn to mow (~600 sq ft), so I chose the 40V self propelled model. Now I haven't mowed my yard for a couple of months because I needed to replace my mower, but it's late fall so there hasn't been a lot of growth. So I unpacked the mower and assembled the grass ...
From Gen4 40-volt, 20-in Self Propelled Battery Walk Mower with (Battery and Charger Not Included) Verified Purchaser
Hello Chris,
We appreciate you sharing your feedback regarding the Kobalt Lawn Mower. The load put on the motor will definitely impact the perfo...

BEWARE - no replacecement parts
I’ve owned my Kobalt lawnmower for just three years, and it’s already obsolete simply because I can’t buy a replacement blade. After visiting five different Lowe’s locations, speaking to multiple employees and managers, and even calling Lowe’s customer service, I still got nowhere. Eventually, I contacted Kobalt customer service directly—what a joke. They kept insisting the blade was available at Lowe’s until I asked them to send me the actual link. The link they provided clearly showed “NOT AV...
Hello Robert! We appreciate you reviewing the Kobalt Mower. We are sorry to hear about the experience with the blade being out of stock and would be ...

Small well maintained lawns only
The mower performs so-so. If one is used to a 3-1/2 hp gas mower, this unit might be a disappointment. The 6 Amp Hour battery might not be enough juice to complete a full front or full back yard in a suburban home without multiple recharge sessions (lasting hours in-between). A twenty by forty sq foot yard is around what the battery can mow on one charge The mower is not strong enough to mow overgrown grass (> 8 inches tall or thick) without some extra careful maneuvers (tilting up front of m...
No Regrets!
I have no regrets whatsoever over this purchase. In fact, I'm not sure why I waited so long to get one. Maybe it was due to a few of the bad reviews that I read on here, but they have all proven wrong. Like the guy who said he was "too tall to use this short mower." He obviously didn't raise the mower for his height, which is a 10-second adjustment! Or how about the people that said it bogged down too much? I didn't have one bog during my first use on my ¼ acre lawn that hasn't been mowed for th...
One of the worst purchases I have ever made
This mower was purchased not even five months ago. As an owner of many Kobalt 40v tools, I was excited to get this mower to cut my small yard. It never made it through the whole yard. Not. One. Time. I haven't even used the self-propelled function since the 3rd use because it drains the battery so fast. My last time cutting the yard, I used all six 40v batteries to own to finally finish the yard. The 6Ah battery is a terrible product. You cannot purchase a replacement battery. It runs the mower ...
Hello there! Thank you for reviewing the Kobalt Mower. We appreciate you sharing your experience with the mower runtime and will pass your feedback a...

Worst Purchase I've Ever Made
If your yard is the size of a dog kennel, this may be for you. But an 1/8 of an acre suburban lot with more concrete than grass is FAR TOO LARGE A TASK! I purchased this mower not quite five months ago. I did find it odd that you couldn't buy an extra battery like the one sold with it (6Ah 40v). I no longer find it odd. I have been an owner of Kobalt 40v tools for years. I own a trimmer, hedge clipper, pole saw, edger, and two blowers. I already had several 40v batteries from 2Ah to 4Ah. Any of ...
Hello there! Thank you for reviewing the Kobalt Mower! We appreciate you sharing your experience with the mower and will pass the feedback along to o...

Will not work out of the box
Full charge before even thinking about it, display says full battery, does nothing. I'll return it and get a brand that works out of the box
Hi there, Phil! We are very sorry to hear that your mower is having a difficult time getting started. We would recommend ensuring you are holding the...
















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...