RB 40V 13" Brushless Cordless Lawn Mower Review: Who It Fits and Who Should Skip It

What stands out

• Brushless motor provides higher torque and quieter operation than gas models.
• 30-minute runtime on a single 4.0Ah battery charge.
• Ultra-lightweight 28-pound design with a foldable handle for simple storage.
• 2-in-1 versatility allows for bagging or mulching clippings.

Who it fits

Key specs explained for this mower

Voltage: 40V

This voltage rating indicates the power level of the battery system. Higher voltage generally means more torque and better performance on thick grass. You can expect this mower to handle moderate resistance better than lower-voltage models. It is a standard power level for residential cordless mowers, balancing strength with battery efficiency for typical yard tasks.

Cutting Width: 13 in

The deck covers a 13-inch path with each pass. This width is suitable for small to medium lawns. You will need to make more passes compared to wider mowers, but the narrower deck offers better maneuverability around tight corners and garden beds. It is a practical size for yards with many obstacles.

Motor Type: brushless

A brushless motor uses electronic commutation instead of physical brushes. This design reduces friction, which extends the motor's lifespan and improves energy efficiency. You benefit from quieter operation and consistent power delivery. This technology requires less maintenance than brushed motors, as there are no carbon brushes to replace over time.

Runtime: 30 min

The mower provides up to 30 minutes of continuous cutting time on a single charge. This duration is sufficient for small lawns with limited grass height. You should check your yard size before buying to ensure the runtime covers your entire area. Larger yards may require additional batteries to complete the job in one session.

Design and Build Overview

The listing describes the RB 40V 13-Inch Brushless Push Mower as a white unit measuring 14.8 inches wide, 33.1 inches long, and 42.6 inches tall. It weighs 28 pounds. The handle is foldable. This design allows you to lift the mower easily and store it in tight spaces like a garage corner or shed. The 6-inch wheels are noted for providing smooth portability across small to medium yards. You can maneuver the machine without excessive effort.

The control layout centers on an instant push-button start. You eliminate pull cords and frustrating delays by simply pressing the button. This feature ensures quick operation without the mechanical complexity of a recoil starter. The mower uses a 40V battery system with a 4.0Ah capacity. You must remove the battery when the tool is not in use and store it in a dry, well-ventilated place. This maintenance step protects the power source.

The brushless motor delivers more torque and quieter operation compared to gas mowers. You get reduced noise levels, which is ideal for early mornings or noise-sensitive neighborhoods. The unit offers a 2-in-1 function for bagging or mulching. You can choose a clean finish for leaf cleanup or mulch to nourish your lawn. The build focuses on low maintenance. You avoid spark plugs, air filters, or engine servicing. The finish is practical for regular outdoor use.

Setup And Everyday Use Guide

Setting up this mower is straightforward. You begin by attaching the handle to the deck. The handle folds for storage, which simplifies transport and garage placement. Once assembled, you insert the 40V 4.0Ah lithium-ion battery into the designated slot. The listing notes that you must remove the battery when the tool is not in use. Store it in a dry, well-ventilated place to maintain its condition. The unit uses a push-button start system. This feature eliminates the need for pull cords, allowing you to begin mowing with a simple press. There are no spark plugs, air filters, or oil changes required. The brushless motor design means there are no carbon brushes to wear out, reducing maintenance needs over time. For daily use, you push the mower across your lawn. It lacks a self-propelled drive, so you provide the forward motion. The 13-inch cutting width is manageable for small to medium yards. You can adjust the mowing function based on your preference. Choose the bagging mode for a clean finish or the mulching mode to return finely chopped clippings to the soil. The 6-inch wheels provide smooth portability over typical grass surfaces. The quiet operation allows for early morning use without disturbing neighbors. The zero-emission design means no gas or exhaust fumes. You simply monitor the runtime, which lasts up to 30 minutes on a single charge. This duration suits smaller lawns that can be completed within that window. The lightweight 28-pound frame makes it easy to maneuver around obstacles.

Battery And Storage Checks

Before you buy, confirm your battery compatibility. This mower uses the RB 40V system. If you own other RB tools, you can share that 4.0Ah battery. If not, you must purchase the battery and fast charger separately. They are not always included in every listing variation. Check the specific product title for clarity.

Upkeep is minimal. The brushless motor requires no carbon brush replacements. You do not need oil or spark plugs. Simply keep the deck clean and the blades sharp. Store the battery in a dry place when not in use to preserve capacity.

This 13-inch model suits small yards. If your lawn exceeds a quarter acre, consider wider cutting widths. The push design lacks self-propulsion, so you must provide the walking effort. It fits well if you prefer lightweight, quiet operation over raw power. Verify your storage space fits the folded 42.6-inch height.

Check before you buy

• Verify if the 40V battery and charger are included in your specific listing.
• Confirm the 13-inch cutting width matches your yard size and access paths.
• Check if you already own RB 40V tools for shared battery compatibility.
• Ensure your garage or shed can accommodate the 42.6-inch folded height.

The product at a glance

1

RB 40V 13-Inch Brushless Push Mower

Best for: small lawns needing quiet, lightweight mowing

Power Source

40V battery

Cutting Width

13 in

Voltage

40V

Battery Capacity

4.0Ah

Runtime

Up to 30 min

Cutting Height

5 positions

View on Amazon: RB 40V 13-Inch Brushless Push Mower Affiliate link

The RB 40V 13" Brushless Cordless Lawn Mower features a 13-inch cutting width and a 40V 4.0Ah battery. It offers 30 minutes of runtime and a push-drive brushless motor. The lightweight 28 lb design folds for storage. You get 2-in-1 bagging or mulching. This mower suits small yards where quiet operation and easy handling matter most.

Pros

• Brushless motor for reduced noise and maintenance
• 30-minute runtime on a 4.0Ah battery
• Lightweight 28 lb build with foldable handle
• 2-in-1 bagging and mulching functions

Cons

• 13-inch cutting width limits efficiency on larger lawns
• Push-drive requires physical effort to operate
• 30-minute runtime may be insufficient for extensive areas

Good fit if

• You have a small lawn under 1/4 acre
• You need a quiet mower for early morning use
• You want a lightweight unit for easy storage

Skip if

• You have a large lawn requiring longer runtime
• You prefer self-propelled ease on hilly terrain
• You need a wider cutting deck for speed

Verdict: RB 40V 13" Brushless Mower fits small-yard owners who value quiet, lightweight operation over wide cutting speeds.

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Frequently asked questions

See also

• rb 40v 13 brushless cordless lawn mower alternatives
• best lawn mowers under 150
• wild badger power lawn mower 40v brushless review
• greenworks 40v 12 in cordless review