# TLDR Review: DeWalt 21.5" Cordless Mower

*Published: 2026-04-06 | Updated: 2026-04-06 | Source: https://shopsavvy.com/reviews-tldr/dewalt-21.5"-cordless-mower*

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## Product: DeWalt 21.5" Cordless Mower
**Brand:** DEWALT

## Pros
- Powerful motor with an auto-sensing feature that adjusts RPM based on mowing needs, delivering efficient cutting performance.
- Significantly quieter operation compared to traditional gas mowers, making it ideal for noise-sensitive neighborhoods.
- Comes with two high-capacity 10AH 20V batteries, providing solid run time to mow a typical front and back yard on a single charge.
- Foldable handle and compact design make storage easy, especially for those with limited space.
- Eliminates the hassle and mess of oil, gas, and spark plugs, offering a clean, eco-friendly mowing experience.
- Light and easy to push despite being a non-self-propelled model, thanks to a comfortable tall handle and smooth wheel adjustment.
- Quick assembly—usually around 15 minutes—and adjustable mowing height for different grass lengths add to user convenience.
- Strong build quality and durable construction consistent with DeWalt’s reputation for reliable tools.

## Cons
- Battery life and performance decline noticeably after only a few uses, leading to disappointing and unreliable runtime for many users.
- The mower is better suited for light or occasional use; it struggles with heavy or demanding mowing tasks and rough terrain over time.
- Requires multiple battery charges (sometimes two full charges) to complete a typical yard, which can slow down yard work.
- Some users report issues with charging the included 10AH batteries or shortening battery lifespan rapidly.
- Not self-propelled, so it may require more effort on uneven or larger lawns compared to some electric mower competitors.
- Some users feel let down by the product’s durability and long-term reliability despite the strong initial performance.
- Manufacturer appears to have discontinued this model, possibly due to these battery and performance concerns.

## Bottom Line

If you’re after a quieter, eco-friendly mower that’s easy to start and store, the DeWalt 21.5 in. 20-Volt Max Lithium-Ion cordless push mower delivers solid initial performance and user-friendly features. However, it’s best for smaller lawns and lighter workloads due to declining battery life and less-than-ideal durability under heavy use. If you need longer runtime or a tougher mower for frequent, demanding mowing, you might want to explore other battery-powered models known for better battery endurance or self-propulsion for easier handling.

## Pros vs Cons at a Glance

| Pros | Cons |
|------|------|
| Powerful motor with an auto-sensing feature that adjusts RPM based on mowing needs, delivering efficient cutting performance. | Battery life and performance decline noticeably after only a few uses, leading to disappointing and unreliable runtime for many users. |
| Significantly quieter operation compared to traditional gas mowers, making it ideal for noise-sensitive neighborhoods. | The mower is better suited for light or occasional use; it struggles with heavy or demanding mowing tasks and rough terrain over time. |
| Comes with two high-capacity 10AH 20V batteries, providing solid run time to mow a typical front and back yard on a single charge. | Requires multiple battery charges (sometimes two full charges) to complete a typical yard, which can slow down yard work. |
| Foldable handle and compact design make storage easy, especially for those with limited space. | Some users report issues with charging the included 10AH batteries or shortening battery lifespan rapidly. |
| Eliminates the hassle and mess of oil, gas, and spark plugs, offering a clean, eco-friendly mowing experience. | Not self-propelled, so it may require more effort on uneven or larger lawns compared to some electric mower competitors. |
| Light and easy to push despite being a non-self-propelled model, thanks to a comfortable tall handle and smooth wheel adjustment. | Some users feel let down by the product’s durability and long-term reliability despite the strong initial performance. |
| Quick assembly—usually around 15 minutes—and adjustable mowing height for different grass lengths add to user convenience. | Manufacturer appears to have discontinued this model, possibly due to these battery and performance concerns. |
| Strong build quality and durable construction consistent with DeWalt’s reputation for reliable tools. |  |

## Current Prices

| Retailer | Price | Availability |
|----------|-------|-------------|
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| Shopping.com | $275.00  | Check |
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| Melitawillstore | $409.18  | Check |
| The BuildClub | $448.95  | Check |
| Ace Hardware | $449.00  | Check |
| acme tools | $449.00  | Check |
| Dewalt Authorized Seller | $449.00  | Check |
| Dewalt Authorized Seller | $449.00  | Check |

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*About this review: We pulled together findings from professional and user reviews, and cross-referenced them with ShopSavvy's pricing data from thousands of retailers to give you the short version.*