Denali 20V Review

18-Inch Brushless Push Lawn Mower with Two 4.0 Ah Lithium Batteries & Dual Port Charger


Final Score

3.3 / 5 from 130 users

Denali 20V | Tools Official
Denali 20V | Tools Official
Denali 20V | Tools Official
Amazon Online


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We spent 6.3 hours reading reviews from customers and experts. In summary, here's what users think:

6 reasons to buy

  • Several reviews highlighted that the Denali 20V mower is battery-operated, which makes it quieter and less messy compared to gas-powered mowers. (18 reviews)

    • “Incredibly light and ridiculously quiet.”

    • “This mower had many of the features I was looking for --- it is battery-operated, light, much quieter and less messy than a gas-powered mower.”

    • “Nice and light and quiet.”

    • “My lawn areas are not large, but the batteries have had plenty of power for each mowing job.”

    • “I was very excited to use the battery powered mower after years of using a corded electric mower.”

    • “The fact that I never have to buy gas again is awesome.”

  • The mower is noted for being incredibly light, making it easy to push and maneuver, especially on flat surface. (17 reviews)

    • “This mower had many of the features I was looking for --- it is battery-operated, light, much quieter and less messy than a gas-powered mower.”

    • “It worked well for the few times that I used it but is very lightweight.”

    • “Nice and light and quiet.”

    • “Really the only plus side is that this thing is SUPER light. You barely notice it.”

    • “Easy to use!”

    • “The Mower is lightweight, around 35 pounds and rolls easily on four wheels.”

    • “The lightweight design makes it perfect for any age group and it is very easy to push despite having no assisted propulsion.”

    • “Easy to adjust height and push.”

  • The mower's foldable design was pointed out as a convenient feature for easy storage, especially for those with limited space. (9 reviews)

    • “This mower had many of the features I was looking for --- it is battery-operated, light, much quieter and less messy than a gas-powered mower, can be folded to take up less room”

    • “Easy to fold up and store till next time.”

    • “folds up”

    • “can be stored flat or standing against a side wall in the garage which is very nice”

    • “The handle can be shortened and folded for storage.”

    • “The handle bars fold up or down easily for storage or transport.”

    • “When it's time to put the mower away, the telescoping, foldable handle allows me to store it vertically and save space.”

    • “Handle also fold for less space and easier storage.”

    • “It’s very compact and easy folds up to be stored on a wall hook if necessary.”

  • Users appreciated the ability to choose between mulching and bagging grass clippings, which adds versatility depending on lawn care needs. (5 reviews)

    • “The first part I used the catcher and put the clippings in our compost bin. The remainder I used the mulching attachment. The mulcher works great, chopping up a lawnful of leaves very nicely.”

    • “I can choose between bagging or mulching (I prefer the latter)”

    • “We used the mulching device, and it worked great.”

    • “I also appreciate the 2-in-1 mulch or bagging feature and the easy lift bag removal.”

    • “The bagger feature really great too.”

  • The presence of battery life indicators on the Denali 20V was noted, allowing users to gauge how much charge is left and manage their mowing tasks accordingly. (4 reviews)

    • “After running the mower for a half-hour or more at a time, it looks like I have used less than half the capacity (based on the batteries' indicator lights).”

    • “Also tells you when to charge the batteries”

    • “Both batteries have indicators on them to let you know what the battery life is at”

    • “The batteries have a built in charge indicator.”

  • The blade housing extends to the edge of the wheels, allowing for closer trimming around obstacles and reducing the need for additional hand-trimming. (1 review)

    • “the blade housing extends to the edge of the wheels, so no more hand-trimming.”

3 reasons not to buy

  • Some users reported that the battery life of the Denali 20V is insufficient for larger lawns. One review mentioned needing to recharge multiple times to finish mowing a 1/4 acre lot, which was time-consuming. (14 reviews)

    • “I have a small lawn (< 1/4 acre) and it sounded like even that might be beyond the capabilities of a single charge.”

    • “I had to charge the batteries three times to finish the job”

    • “It seems like a nice fit for a small yard, but it doesn't complete a small task on a single charge.”

    • “So the battery will hold a charge for about half my front yard. I am on my third charge and haven't even gotten to the back and my yard is small, about 800 sq ft.”

    • “We have a quarter of an acre 0.25 and I have to cut the front then charge the batteries for 80+ minutes to maybe finish the yard last time when grass was high it took 3 full chargers to finish.”

    • “I had to charge the batteries 3x to do a corner lot, in a city.”

  • Some users found the mower to be smaller than expected, which might not be suitable for larger yards. (6 reviews)

    • “Mower is a little small, but we have a large yard,”

    • “This mower is for small yard.”

    • “Mainly for small lawns.”

    • “We have to get another mower unless you have a very very small yard and grass doesn’t get very high.”

    • “It's also a lot smaller than I thought,”

    • “The Denali mower is an excellent option for very small well maintained yards.”

  • The batteries take several hours to fully charge, which can be inconvenient if multiple charges are needed to complete mowing. (6 reviews)

    • “I put the batteries on the charger and left it to charge overnight.”

    • “it takes a few hours each time to complete charging for the next mow”

    • “So either over spend on batteries or charge them and wait forever to finish mowing your lawn.”

    • “recharge time is too long”

    • “We have a quarter of an acre 0.25 and I have to cut the front then charge the batteries for 80+ minutes to maybe finish the yard last time when grass was high it took 3 full chargers to finish.”

    • “I don't want to have to stop and charge batteries in the middle of mowing.”

Bottom Line

The Denali 20V is a battery-operated mower that's quieter than gas mowers. It's lightweight, easy to push, and maneuver, especially on flat surfaces. Its foldable design saves storage space. Users can choose between mulching and bagging grass clippings. Battery life indicators help manage mowing tasks. The blade housing extends to the wheel edges for closer trimming. However, its battery life may not be sufficient for larger lawns, and charging can take several hours.


Cutting Width (in)18 inch
FeaturesElectric Start, Mulching, Bagging
Max Cutting Height3"
Min Cutting Height1"
Power SourceBattery
CategoryPush Mowers
Warranty5 Years
Weight35 lbs.

Video Reviews

Special Features

  • Cross-Compatible System: Works with all SKIL PWR CORE 20 tools, batteries, and chargers, so you can use the same gear for different jobs.
  • Efficient Runtime: Gives up to 30 minutes of use with fully charged batteries, depending on how thick the grass is and how you mow.
  • Complete Lawn Mowing Kit: Comes with a 20V 18-inch cordless lawn mower, two 4.0Ah batteries, and a charger, so you have everything you need to get started.
  • Powerful Performance: Has a digital brushless motor that works like a gas engine, giving you strong mowing power.
  • Extended Battery Life: Denali by SKIL battery technology makes the batteries last 25% longer and gives them twice the lifespan.
  • Push Button Start: Starts easily with a push button—just set it up, press the button, and you're ready to mow.
  • Adjustable Cutting Heights: Allows you to change the cutting height in six steps, from 1 to 3 inches, for the grass length you want.
  • Versatile Cutting Options: Lets you choose between mulching or bagging the grass, and the bag is easy to remove.
  • Space-Saving Design: Has a foldable handle that lets you store the mower upright, saving space.
  • Compact Dimensions: Measures 55.9 x 18.9 x 46.7 inches, making it a good fit for different yard sizes.
  • Comprehensive Warranty: Comes with a 2-year warranty for the battery and a 5-year warranty for the mower, giving you peace of mind.


  • Q:

    Is this mower compatible with higher amp batteries?

  • A:

    No, the motor is designed for the battery amperage included with the mower.

  • Q:

    The handle won't lock into the bottom supporting holes and falls to the lowest angle. How can this be fixed?

  • A:

    Ensure the handles are fully extended to engage the locking mechanism.

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