---
product_id: 664557161
title: "RB 40V 9\" Mini Cordless Lawn Mower with Battery & Charger for Small Yards"
brand: "rb"
price: "$799.66"
currency: USD
in_stock: true
reviews_count: 13
category: "Rb"
url: https://www.desertcart.us/products/664557161-rb-40v-9-mini-cordless-lawn-mower-with-battery-charger
store_origin: US
region: United States of America
---

# 40V brushless motor, 6000RPM power 1-hour battery runtime, cordless freedom 3 adjustable cutting heights (1.2"–2") RB 40V 9" Mini Cordless Lawn Mower with Battery & Charger for Small Yards

**Brand:** rb
**Price:** $799.66
**Availability:** ✅ In Stock

## Summary

> 🌿 Small Yard, Big Impact: Mow Smart, Live Green!

## Quick Answers

- **What is this?** RB 40V 9" Mini Cordless Lawn Mower with Battery & Charger for Small Yards by rb
- **How much does it cost?** $799.66 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/664557161-rb-40v-9-mini-cordless-lawn-mower-with-battery-charger)

## Best For

- rb enthusiasts

## Why This Product

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

## Key Features

- • **Tailored Lawn Care:** Three cutting height options let you customize your yard’s look from neat buzz cut to lush green.
- • **Safety First, Always:** Smart tilt-stop technology halts operation instantly if mower tips beyond safe angles, ensuring peace of mind.
- • **Power Meets Precision:** 6000RPM brushless motor delivers quiet, maintenance-free mulching for pristine small lawns.
- • **Compact & Ready to Store:** Detachable handle and upright storage save up to 70% space—perfect for modern, clutter-free living.
- • **Effortless Maneuverability:** Ultra-light 5.2kg design with pivoting front wheels and one-hand steering conquers tight corners with ease.

## Overview

The RB 40V 9" Mini Cordless Lawn Mower is a lightweight, battery-powered mower designed for small yards up to 540 sq.ft. Featuring a powerful 6000RPM brushless motor and a 40V 2Ah battery, it offers up to 1 hour of cordless mowing. Its compact design includes pivoting front wheels and one-hand steering for easy navigation around obstacles. With 3 adjustable cutting heights and advanced safety tilt-stop, it combines efficiency, customization, and safety. The mower’s detachable handle and upright storage save space, making it ideal for tight patios and small outdoor areas.

## Description

desertcart.com : RB 40V 9" Mini Cordless Lawn Mower with Battery & Charger for Small Yards | Ultra-light with brushless motor. 3 cutting heights. One-hand steering. Upright storage for tiny spaces, small lawns, patios. : Patio, Lawn & Garden

Review: Perfect Compact Mower for Small Yards and Obstacles - Don't be deceived by the small size, this mower can do big things! I bought this because I have a small yard with a lot of challenging landscaping obstacles (previous owner threw river rock pebbles all over the yard without putting anything underneath them and then called it a day.) It's perfect for what I need. Yes, there are times that I have to go back and forth a few times to cut down stubborn weed stalks, but it really is akin to vacuuming. It's super lightweight and compact, and very easy to start. It's about as loud as a weed whacker, so quieter than your usual lawn mower. It's plastic, but it seems pretty durable. I have the blades set high enough that the river rocks aren't a problem, and when I accidentally nicked a root it stopped, but started up right away with no issues after I moved to a different section of the yard. The battery seems to hold its charge pretty well, and the blades seem good for regular grass. I do have a lot of tough, fibrous weeds so the blades might need sharpening sooner than later. I like that it has three levels of cutting, the lowest level was like a buzz cut for the yard, much too short for what I wanted, but the 3rd height is perfect. I bought it on sale but honestly the regular price seems to be a good value. I'll update my review if anything changes over the summer, but I'm very pleased with this purchase.
Review: It’s Little But Mighty! - Ok I have mowed my yard at the RV Resort about 4-5 times now . I’ll give some pros and cons to this little mower. Let’s start with the pros. It’s very lightweight from when it comes in the box and when you have to set it up, it’s very easy. It’s very easy to understand set up and running. It only took a few minutes. I love that. I don’t have to worry about gas. I don’t have to worry about oil. It’s not as noisy as a regular mower and it gets the job done. I live in an RV resort in the summertime and my yard is fenced in so I have a very small area and a regular mower was just too big. This is a 9 inch mower so it’s small enough to go under like a swinging couch furniture benches and it’s great for small places like getting under your slides and going around the things that you have in your small yard. OK now let’s talk about the Cons. You have to push in a blue button and hit the trigger when you go to start it so when you run your little mower, you actually push it back-and-forth almost like a vacuum is the way it mows the best do it a little bit slower than you would a vacuum if you go too fast, it cuts uneven if you are cutting uneven grass, then slow your pace, but what I don’t like about it is that if you do hit bumpy ground like I do have here at the Resort. It shuts off, but then I just hold down the trigger and it starts right back up again. I wish it had a button where you could push it in and lock it. I’m gonna give this little guy a five star because it’s lightweight it cuts great it’s great for small spaces and that’s why I bought it in the first place it’s not that noisy and I love the fact that it’s battery operated and I don’t have to mess with gas and oil. And the battery life I can go all the way around my fence. I can do my whole yard inside the fence and I can even work on my front yard on one battery. But one of the cons is the wheel base is so wide the way they did the axle you cannot get right up next to a fence or an object for trimming so you end up having to trim anyway that’s the one downfall is it does not go right up against a fence. I have a cement patio I have to trim around cause it just doesn’t go right next to it. I forgot to mention that the way it kind of pivots and moves. It’s not just back-and-forth it kind of pivots and moves at an angle so that’s kinda nice.

## Features

- [Powerful & Efficient] This small battery mower features a high-speed 6000RPM brushless motor for fine mulching with zero maintenance. Powered by a 40V 2Ah battery, it’s ideal for small lawns up to 540 sq.ft.
- [Ultra-Light & Compact] Weighing only 5.2kg (11.5lbs without battery), this mini cordless lawn mower is highly maneuverable with pivoting front wheels and one-hand steering—perfect for tight corners and small areas.
- [Adjustable Cutting Height] Customize your lawn with 3 cutting heights from 1.2" to 2". Keep your grass healthy and well-groomed all season with this small electric mower.
- [Advanced Safety Design] Automatically stops if tilted beyond 20°–70°, meeting US safety standards. A reliable battery-operated lawn mower for small yards and beginners.
- [Space-Saving Storage] Detachable aluminum handle and upright storage design save up to 70% space. A compact lawn mower that fits anywhere—ready to use right out of the box!
- One Battery System. Every RB Tool. Battery care: When tool is not in use, the battery MUST be removed from the tool and stored in a dry, well-ventilated place.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CSMKWNHL |
| Battery Average Life | 1 hour |
| Best Sellers Rank | #12,381 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #31 in Walk-Behind Lawn Mowers |
| Brand | RB |
| Brand Name | RB |
| Color | white |
| Customer Reviews | 4.3 out of 5 stars 472 Reviews |
| Cutting Width | 9 inches |
| Cutting width | 9 inches |
| Item Dimensions D x W x H | 5"D x 10"W x 38"H |
| Item Highlight | Ultra-light with brushless motor. 3 cutting heights. One-hand steering. Upright storage for tiny spaces, small lawns, patios. |
| Item Type Name | walk-behind-lawn-mowers |
| Manufacturer | NGP |
| Manufacturer Part Number | 122 |
| Material | Plastic |
| Material Type | Plastic |
| Maximum Adjustable Cutting Height | 2 inches |
| Minimum Adjustable Cutting Height | 1.2 inches |
| Model Number | 122 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Positions | 3 |
| Operation Mode | Manual |
| Power Source | Battery Powered |
| Style | 40V 2AH 9IN Mower |
| Style Name | 40V 2AH 9IN Mower |
| Unit Count | 1 Count |

## Product Details

- **Brand:** RB
- **Color:** white
- **Cutting Width:** 9 inches
- **Material:** Plastic
- **Number of Items:** 1
- **Operation Mode:** Manual
- **Power Source:** Battery Powered
- **Product Dimensions:** 5"D x 10"W x 38"H
- **Style:** 40V 2AH 9IN Mower

## Images

![RB 40V 9" Mini Cordless Lawn Mower with Battery & Charger for Small Yards - Image 1](https://m.media-amazon.com/images/I/71qmrqzeOtL.jpg)
![RB 40V 9" Mini Cordless Lawn Mower with Battery & Charger for Small Yards - Image 2](https://m.media-amazon.com/images/I/91CqfiqwA5L.jpg)
![RB 40V 9" Mini Cordless Lawn Mower with Battery & Charger for Small Yards - Image 3](https://m.media-amazon.com/images/I/91oTH9V2DLL.jpg)
![RB 40V 9" Mini Cordless Lawn Mower with Battery & Charger for Small Yards - Image 4](https://m.media-amazon.com/images/I/91R3WQg7eTL.jpg)
![RB 40V 9" Mini Cordless Lawn Mower with Battery & Charger for Small Yards - Image 5](https://m.media-amazon.com/images/I/91wSN6UMcjL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect Compact Mower for Small Yards and Obstacles
*by K***. on July 7, 2026*

Don't be deceived by the small size, this mower can do big things! I bought this because I have a small yard with a lot of challenging landscaping obstacles (previous owner threw river rock pebbles all over the yard without putting anything underneath them and then called it a day.) It's perfect for what I need. Yes, there are times that I have to go back and forth a few times to cut down stubborn weed stalks, but it really is akin to vacuuming. It's super lightweight and compact, and very easy to start. It's about as loud as a weed whacker, so quieter than your usual lawn mower. It's plastic, but it seems pretty durable. I have the blades set high enough that the river rocks aren't a problem, and when I accidentally nicked a root it stopped, but started up right away with no issues after I moved to a different section of the yard. The battery seems to hold its charge pretty well, and the blades seem good for regular grass. I do have a lot of tough, fibrous weeds so the blades might need sharpening sooner than later. I like that it has three levels of cutting, the lowest level was like a buzz cut for the yard, much too short for what I wanted, but the 3rd height is perfect. I bought it on sale but honestly the regular price seems to be a good value. I'll update my review if anything changes over the summer, but I'm very pleased with this purchase.

### ⭐⭐⭐⭐⭐ It’s Little But Mighty!
*by T***S on July 9, 2026*

Ok I have mowed my yard at the RV Resort about 4-5 times now . I’ll give some pros and cons to this little mower. Let’s start with the pros. It’s very lightweight from when it comes in the box and when you have to set it up, it’s very easy. It’s very easy to understand set up and running. It only took a few minutes. I love that. I don’t have to worry about gas. I don’t have to worry about oil. It’s not as noisy as a regular mower and it gets the job done. I live in an RV resort in the summertime and my yard is fenced in so I have a very small area and a regular mower was just too big. This is a 9 inch mower so it’s small enough to go under like a swinging couch furniture benches and it’s great for small places like getting under your slides and going around the things that you have in your small yard. OK now let’s talk about the Cons. You have to push in a blue button and hit the trigger when you go to start it so when you run your little mower, you actually push it back-and-forth almost like a vacuum is the way it mows the best do it a little bit slower than you would a vacuum if you go too fast, it cuts uneven if you are cutting uneven grass, then slow your pace, but what I don’t like about it is that if you do hit bumpy ground like I do have here at the Resort. It shuts off, but then I just hold down the trigger and it starts right back up again. I wish it had a button where you could push it in and lock it. I’m gonna give this little guy a five star because it’s lightweight it cuts great it’s great for small spaces and that’s why I bought it in the first place it’s not that noisy and I love the fact that it’s battery operated and I don’t have to mess with gas and oil. And the battery life I can go all the way around my fence. I can do my whole yard inside the fence and I can even work on my front yard on one battery. But one of the cons is the wheel base is so wide the way they did the axle you cannot get right up next to a fence or an object for trimming so you end up having to trim anyway that’s the one downfall is it does not go right up against a fence. I have a cement patio I have to trim around cause it just doesn’t go right next to it. I forgot to mention that the way it kind of pivots and moves. It’s not just back-and-forth it kind of pivots and moves at an angle so that’s kinda nice.

### ⭐⭐⭐⭐⭐ Surprisingly impressive little mower!
*by C***N on September 2, 2026*

I’ll admit, I wasn’t expecting much from such a small, lightweight mower—but WOW, was I surprised! This little thing is incredibly easy to use and actually works really well. It’s lightweight enough that moving it around the yard is a breeze, and there’s no wrestling with a big, heavy mower. It’s perfect for a small yard and makes quick work of the grass. The battery lasts well for what I need, and not having to mess with gas, oil, or cords is a huge bonus. Honestly, I bought this thinking it would be a “good enough” little mower, and it has far exceeded my expectations. Easy to use, easy to store, and gets the job done. Definitely a surprisingly great purchase! 🌿🙌

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-22*