---
product_id: 723750727
title: "48V MAX 21Inch Brushless Cordless Lawn Mower, CLMF4821A"
brand: "lawnmaster"
price: "$2080.05"
currency: USD
in_stock: true
reviews_count: 13
category: "Lawn Master"
url: https://www.desertcart.us/products/723750727-48v-max-21inch-brushless-cordless-lawn-mower-clmf4821a
store_origin: US
region: United States of America
---

# 3400 RPM brushless motor 3-in-1 bagging, mulching, discharge 48V MAX dual 4.0Ah batteries 48V MAX 21Inch Brushless Cordless Lawn Mower, CLMF4821A

**Brand:** lawnmaster
**Price:** $2080.05
**Availability:** ✅ In Stock

## Summary

> 🌱 Cut the cord, not your style — mow smarter, not harder!

## Quick Answers

- **What is this?** 48V MAX 21Inch Brushless Cordless Lawn Mower, CLMF4821A by lawnmaster
- **How much does it cost?** $2080.05 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/723750727-48v-max-21inch-brushless-cordless-lawn-mower-clmf4821a)

## Best For

- lawnmaster enthusiasts

## Why This Product

- Trusted lawnmaster brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tailor Your Turf:** Six adjustable cutting heights from 1.4 to 3.4 inches for a perfectly manicured lawn.
- • **Power Through Your Yard:** 3400 RPM brushless motor delivers gas-like power with zero emissions.
- • **Smart Energy Management:** iPower tech display optimizes battery life and cutting mode for peak efficiency.
- • **Unmatched Cordless Freedom:** Dual 24V MAX 4.0Ah batteries provide up to 48 minutes runtime—no cords, no limits.
- • **Versatile 3-in-1 Functionality:** Switch effortlessly between bagging, mulching, or side discharge to suit your yard’s needs.

## Overview

The CLMF4821A Cordless Lawn Mower combines a powerful 3400-RPM brushless motor with dual 48V MAX 4.0Ah lithium-ion batteries, delivering up to 48 minutes of cordless runtime. Featuring a 21-inch cutting deck and 3-in-1 functionality (bagging, mulching, side discharge), it offers six adjustable cutting heights for customizable lawn care. The intelligent iPower technology display ensures efficient power management, making this mower a lightweight, eco-friendly, and versatile solution for professional-quality yard maintenance.

## Description

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Review: Great little tool for smaller yards. - Great little tool for smaller yards. Quite a bit smaller swath than I've been used to but more than adequate for my 9000 SQ FT lot. It seems to take about as long to mow my yard as it always has with my old 22" wide gas-powered mower. In fact, due to the smaller size and considerably lighter weight it seems to take less effort, especially in and around flower beds and raised-bed planters. Seems to be well made - at first the wheels seemed kind of chintzy but given the weight they'll probably do. Grass catcher is simple to attach and fits well without gaps and leaks. Assembly was adequately documented and went very well. No missing parts and no special tools nor skills needed. So far, I am happy. Time will tell.
Review: I would definitely buy it again and recommend it to other people. - I am very satisfied with this product. It is easy to use, light and does the job very well. The cut is clean and uniform, and the battery has good life to finish without a problem. It is not very noisy and feels comfortable using it. Perfect for keeping the garden in good condition without complications. I would definitely buy it again and recommend it to other people.

## Features

- POWERFUL PERFORMANCE: Tackle your yard with up to 3400-RPM of power and no gas or oil to maintain
- CORDLESS FREEDOM: Powered by two 24V MAX 4.0Ah lithium-ion batteries, with an additional two 24V MAX 4.0Ah lithium-ion batteries included in the box, delivering up to 48 minutes of runtime while the bag collects 15 gallons of grass clippings
- iPOWER TECHNOLOGY DISPLAY: Save energy and gain efficiencies while mowing your lawn with this intelligent and automatic power management system. Display indicates the cutting mode and battery level.
- 3-IN-1 FUNCTION: Mower includes options for bagging, side discharge or mulching
- CUSTOMIZE YOUR CUT: Effortlessly change the height of your cut with 6 cutting positions varying between 1.4-inches and 3.4-inches

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DXV8R98R |
| Best Sellers Rank | #3,898 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #9 in Walk-Behind Lawn Mowers |
| Brand | LawnMaster |
| Brand Name | LawnMaster |
| Color | 21-Inch |
| Customer Reviews | 4.0 out of 5 stars 3,498 Reviews |
| Cutting width | 20 Inches |
| Item Dimensions D x W x H | 35"D x 22"W x 15"H |
| Item Type Name | Cordless Lawn Mower |
| Item Weight | 44 Pounds |
| Manufacturer | Cleva |
| Manufacturer Part Number | CLMF4821A |
| Material | Plastic |
| Material Type | Plastic |
| Maximum Adjustable Cutting Height | 3.4 Inches |
| Minimum Adjustable Cutting Height | 1.4 Inches |
| Model Number | CLMF4821A |
| Number of Positions | 6 |
| Operation Mode | Automatic |
| Power Source | Battery Powered |
| Required Assembly | Yes |
| Smart Home Compatibility | Not Smart Home Compatible |
| Style | 21-Inch with 4 battery |
| Style Name | 21-Inch with 4 battery |

## Product Details

- **Assembly Required:** Yes
- **Brand:** LawnMaster
- **Color:** Orange
- **Cutting Width:** 20 Inches
- **Item Weight:** 44 Pounds
- **Material:** Plastic
- **Operation Mode:** Automatic
- **Power Source:** Battery Powered
- **Product Dimensions:** 35"D x 22"W x 15"H
- **Style:** 21-Inch with 4 battery

## Images

![48V MAX 21Inch Brushless Cordless Lawn Mower, CLMF4821A - Image 1](https://m.media-amazon.com/images/I/71CE+bUbcEL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great little tool for smaller yards.
*by L***R on April 24, 2026*

Great little tool for smaller yards. Quite a bit smaller swath than I've been used to but more than adequate for my 9000 SQ FT lot. It seems to take about as long to mow my yard as it always has with my old 22" wide gas-powered mower. In fact, due to the smaller size and considerably lighter weight it seems to take less effort, especially in and around flower beds and raised-bed planters. Seems to be well made - at first the wheels seemed kind of chintzy but given the weight they'll probably do. Grass catcher is simple to attach and fits well without gaps and leaks. Assembly was adequately documented and went very well. No missing parts and no special tools nor skills needed. So far, I am happy. Time will tell.

### ⭐⭐⭐⭐⭐ I would definitely buy it again and recommend it to other people.
*by E***Y on April 24, 2026*

I am very satisfied with this product. It is easy to use, light and does the job very well. The cut is clean and uniform, and the battery has good life to finish without a problem. It is not very noisy and feels comfortable using it. Perfect for keeping the garden in good condition without complications. I would definitely buy it again and recommend it to other people.

### ⭐ Beware LawnMaster— their customer service was a non-starter, as was their mower
*by C***N on May 13, 2026*

I don’t usually read 1 star reviews, but, unfortunately, there’s no way to avoid this rating for the LawnMaster MEB1216K electric lawn mower 16 inch 12 AMP. 1- Highly unstable: DO NOT LET KIDS mow with this product. On flat ground, the mower is stable, but on a small to moderate slope, the mower is so narrow and so light (seeming attributes until I used it) that it tips over, even using the mowing method recommended by the company for non-flat terrain. The user must possess the strength to keep the mower from tipping. It simply shouldn’t be used on a slope of any kind. 2- The electric engine would not start on the second time I used it, about 3 weeks after the first time (when it started fine). I checked the cord, the connection, the outlet, and did al of the troubleshooting things recommended by the company and by Amazon, but it simply wouldn’t start. The mower is useless unless it powers on. 3- Unfortunately, this (#2) happened a week after the return date. So I contacted the company and spoke with an agent. He guided me through the process of starting a return, which included the necessity of cutting the electric cord to the lawn mower and sending them a photo of this. After submitting all of the photos needed and the form, I was feeling pretty good, because the company told me that they would send me a new mower in replacement. 4- several days later I received an email stating the following: “ We are unable to process your request as the receipt shows the product was purchased from Amazon as a used unit. Lawnmaster warranty replacement does not cover used units.” I wrote to the company and explained that their agent who helped me the first time knew that the mower was a “returned” item to Amazon before I bought it. It was “like new,” however in that it was never used prior to my receiving it. In addition, the agent should have informed me that the company wouldn’t honor their warranty PRIOR TO instructing me to cut the electric cord that goes to the engine. The company did not respond to my correspondence in which I stated the above. I wrote again and received a response that said they would not honor their warranty of the lawn mower. Amazon itself resolved the issue amicably, which is to their credit. Amazon rocks, but consumers should be forewarned to think carefully before buying the LawnMaster lawn mower (or any of their products, in light of their poor customer service).

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-10*