Black & Decker CM2043C Review

20-Inch 3-in-1 40V Max Lithium Ion Cordless Mower


Final Score

3.9 / 5 from 913 users

Black & Decker CM2043C | Tools Official
Black & Decker CM2043C | Tools Official
Black & Decker CM2043C | Tools Official


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We spent 8.4 hours reading reviews from customers and experts. In summary, here's what users think:

8 reasons to buy

  • A good number of users loved how easy the Black & Decker CM2043C is easy to push and maneuver thanks to its lightweight design.
  • Most purchasers appreciated that the mower is easy to assemble out of the box.
  • Numerous consumers noted that the mower’s height adjustment is controlled by one lever and is a breeze to use.
  • The mower runs very quietly.
  • A few individuals loved the mower’s child safety features that require the operator to insert a key before starting the mower.
  • A couple of users found it convenient that the mower’s battery compartment could store two batteries.
  • The mower can be stored easily and takes little space.
  • One buyer noted that the battery compartment kept the batteries dry when hosing down the top during cleaning.

3 reasons not to buy

  • Some people remarked that batteries can get very hot when using the mower and capacity depletes after less than a year of use.
  • Several buyers mentioned that the stock charger is slow. It fully charges a battery in 4 hours.
  • A handful noted that the mower does not do very well on tall and wet grass.

Bottom Line

Many purchasers liked the Black & Decker CM2043C. They were impressed by how easy it is to handle, set up and store. The mower shines the most when used on lawns of up to a quarter acre. It included two 40V max Lithium-Ion batteries that are more than capable of handling lawns of that size. On the other hand, several consumers complained of poor battery performance and its lack of power to handle heavy loads. When purchasing this budget-friendly mower, make sure that lawn size, type of grass and mowing conditions have been considered to get the most of the Black & Decker CM2043C.


Cutting Width (in)20 inch
FeaturesElectric Start, Mulching, Bagging, Side Discharge
Max Cutting Height4"
Min Cutting Height1-1/2"
Power SourceBattery
CategoryPush Mowers
Warranty3 Years
Weight47 lbs
Additional InfoEdgemax Design, Easy-Fold Handle, Includes 2 Batteries and Charger

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Tips for Black & Decker CM2043C

  • When mowing tall grass, it is recommended to start off on the highest setting and gradually work down to the desired height to prevent the mower from bogging down.
  • For lawns larger than a quarter acre, it is recommended to purchase an extra battery for uninterrupted run time.
  • It is recommended to avoid mowing when the grass is wet to conserve battery run time.


  • Q:

    Is the Black & Decker CM2043C self-propelled?

  • A:

    No, the mower is self-push but is very lightweight and maneuverable.

  • Q:

    Does the mower have a brushless motor?

  • A:

    Yes, it has a brushless motor.

  • Q:

    Are the batteries compatible with other Black & Decker tools?

  • A:

    Yes, the batteries can be used with other 40V MAX Black & Decker tools.

  • Q:

    Is it possible to store the mower vertically?

  • A:

    Yes, the mower can be stored upright and is also light enough to be hung on a wall.

  • Q:

    Can the mower work on 20V Black & Decker batteries?

  • A:

    No, the mower requires 40V batteries. 20V batteries are not compatible with this mower.

  • Q:

    Can the mower work on hills?

  • A:

    Yes, it is lightweight enough to mow on slopes.

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