Top Battery Mowers That Brave Rain and Dew
The EGO Power+ LM2135SP is our top pick for weatherproof battery mowing. It suits homeowners with large damp lawns who need consistent power in wet conditions. Its main advantage is the WeatherGuard sealed battery compartment, but its limitation is the higher price compared to other models.
Mowing wet grass is tough on standard mowers. Moisture can cause clumping, rust, and electrical shorts. Weatherproof battery mowers are designed to resist water ingress and handle damp conditions safely.
We compared seven models that stand out for their weather-resistant construction, including sealed battery compartments and corrosion-resistant decks. Owners report that these mowers maintain performance even after morning dew or light rain.
What to look for
What we recommend
EGO Power+ LM2135SP 21-Inch Self-Propelled Mower
The EGO Power+ LM2135SP is a robust self-propelled mower with a brushless motor and WeatherGuard protection. It features a 21-inch steel deck and can handle thick, wet grass without clogging. Owners praise its durability and long runtime.
Pros
- Excellent wet grass performance
- Long runtime with high-capacity battery
- Durable steel deck
Cons
- Heavier than some comparable models
- Battery and charger sold separately
Greenworks Pro 80V 21-Inch Brushless Mower
This Greenworks Pro mower uses an 80V brushless motor for powerful cutting. It has a 21-inch deck and is designed with an IPX4 water-resistant housing. It offers smart cut technology that adjusts power based on grass thickness.
Pros
- Smart Cut adjusts power automatically
- Compatible with multiple Greenworks 80V batteries
- Folding handle for easy storage
Cons
- Battery not included in some packages
- Plastic deck may not be as durable as steel
Ryobi 40V HP Brushless 21-Inch CrossCut Mower
The Ryobi 40V HP CrossCut mower features a unique dual-blade system that provides finer clippings and better mulching in wet conditions. It has a 21-inch deck and an IPX4 rating for water resistance. Its compact design and folding handle make storage easy.
Pros
- CrossCut blades reduce clumping
- Brushless motor for efficiency
- Folds flat for space-saving storage
Cons
- Not as powerful as some 80V models
- Battery and charger may be separate
Milwaukee M18 Fuel 21-Inch Self-Propelled Mower
Milwaukee’s M18 Fuel mower is built to withstand job site conditions. It has a 21-inch stamped steel deck, a powerful brushless motor, and a sealed electronics module that resists water and debris. It offers dual-battery capability for extended runtime.
Pros
- Very durable construction
- Strong cutting power in wet grass
- Dual-battery system extends runtime
Cons
- Heavy and expensive
- Requires two batteries for full operation
DeWalt 20V Max 21-Inch Brushless Mower
The DeWalt 20V Max mower runs on the versatile 20V battery platform, making it convenient for those already in the DeWalt ecosystem. It features a brushless motor, a 21-inch steel deck, and a water-resistant design. It offers push and self-propelled versions.
Pros
- Shares batteries with other DeWalt tools
- Steel deck is rust-resistant
- Brushless motor for longer life
Cons
- Battery capacity may be limited for large lawns
- Not the most powerful option
Worx Nitro 20V 21-Inch Self-Propelled Mower
The Worx Nitro 20V mower is a budget-friendly option that still offers weather resistance and decent performance. It has a 21-inch deck, a brushless motor, and features like a single-lever height adjustment. The battery is compatible with other Worx tools.
Pros
- Affordable price point
- Battery works with Worx tools
- Easy to store with foldable handle
Cons
- Lower voltage may struggle with very wet, thick grass
- Battery runtime is shorter
Craftsman V60 21-Inch Brushless Mower
The Craftsman V60 mower combines power and value. It features a 21-inch steel deck, a brushless motor, and a water-resistant body. It offers variable speed self-propulsion and comes with a battery and charger in many packages.
Pros
- Good runtime and power
- Includes battery and charger in some kits
- Variable speed control for tailored mowing
Cons
- Heavier than some competitors
- Deck may be prone to scratching
How they stack up
| # | Model | Deck Size | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | EGO Power+ LM2135SP 21-Inch Self-Propelled Mower | 21 inches | Large lawns and tough wet conditions | 9.4 | Check price |
| 2 | Greenworks Pro 80V 21-Inch Brushless Mower | 21 inches | Versatile mowing with multiple battery options | 9.1 | Check price |
| 3 | Ryobi 40V HP Brushless 21-Inch CrossCut Mower | 21 inches | Tight spaces and maneuverability | 8.9 | Check price |
| 4 | Milwaukee M18 Fuel 21-Inch Self-Propelled Mower | 21 inches | Professional-grade durability | 9.2 | Check price |
| 5 | DeWalt 20V Max 21-Inch Brushless Mower | 21 inches | Homeowners with existing DeWalt tools | 8.8 | Check price |
| 6 | Worx Nitro 20V 21-Inch Self-Propelled Mower | 21 inches | Budget-conscious buyers wanting quality | 8.5 | Check price |
| 7 | Craftsman V60 21-Inch Brushless Mower | 21 inches | Balanced performance and price | 9.0 | Check price |
Frequently asked questions
Can I use a battery lawn mower on wet grass?
Yes, but with caution. Many battery mowers are designed to handle damp grass, but you should avoid mowing in heavy rain or when the grass is soaked. Wet grass can cause clumping and strain the motor. Look for mowers with weatherproofing features.
What is IPX4 water resistance?
IPX4 is an international standard that indicates protection against water splashes from any direction. It means the mower’s electrical components are protected from splashing water, but it is not submersible. It is suitable for mowing in light rain or morning dew.
How long do battery mowers last on a single charge?
Runtime varies based on battery capacity, grass condition, and power settings. Typically, you can expect 30 to 60 minutes from a standard battery. Higher voltage and amp-hour batteries provide longer runtime. Some mowers accept multiple batteries for extended use.
Are battery mowers as powerful as gas mowers?
Modern battery mowers, especially those with 60V or 80V motors, can rival gas mowers in cutting power. They are also quieter and require less maintenance. For very thick or wet grass, a high-voltage model is recommended.
Do I need to store battery mowers indoors?
Yes, it is best to store your battery mower indoors or in a dry shed. Although the mower is weatherproof, prolonged exposure to rain and moisture can still cause damage. Remove and store the battery separately in a cool, dry place.
Can I leave the battery on the mower outside?
It is not recommended. Even if the battery compartment is sealed, leaving the mower outside exposes it to temperature extremes and moisture, which can reduce battery life. Always store the battery indoors when not in use.
What maintenance does a battery mower require?
Battery mowers need less maintenance than gas mowers. You should regularly clean the underside of the deck, check for debris, and keep the blades sharp. Periodically check bolts and tighten them if needed. No oil changes or spark plug replacements are required.
How do I clean a battery mower after mowing wet grass?
After mowing wet grass, clippings may stick to the deck. Allow the mower to dry, then use a brush or hose to remove debris. Avoid using a pressure washer on electrical parts. Wipe down the outside with a damp cloth.
The verdict
For most homeowners, the EGO Power+ LM2135SP is the best weatherproof battery mower due to its superior wet grass handling and robust build. If you are on a budget, the Worx Nitro 20V offers surprising durability at a lower price. Professionals should consider the Milwaukee M18 Fuel for its rugged construction.
