Powerful Batteries for Homeowner Lawn Mowers That Last
For most homeowners, the Greenworks 80V 2.0 Ah battery offers the best blend of lightweight handling and dependable runtime for small to medium lawns. Its main advantage is the 80V platform’s compatibility with a wide range of Greenworks tools, while its main limitation is the shorter runtime compared to higher capacity options, requiring a spare for larger yards.
Cordless mowers have become the go to for many homeowners, but the battery is the heart of the system. A weak or mismatched battery can turn a quick mow into a frustrating experience, while a quality one delivers consistent power and longevity.
We analyzed specifications and user feedback to find batteries that offer reliable performance for typical lawns. Whether you need a lightweight option for a small yard or a high capacity pack for a larger property, this guide highlights the top choices.
The best picks, ranked
Greenworks 80V 2.0 Ah Battery
This battery powers a wide range of Greenworks 80V mowers and tools. It delivers solid runtime for typical suburban lots, and owners appreciate its quick charging and lightweight build. It is a reliable choice if you already own Greenworks equipment or plan to build a tool ecosystem.
Pros
- Lightweight and easy to handle
- Charges quickly compared to larger packs
- Compatible with many Greenworks 80V tools
Cons
- Shorter runtime on thick or wet grass
- May need a second battery for larger lawns
EGO Power+ 56V 5.0 Ah Battery
EGO’s 5.0 Ah battery is a powerhouse that offers extended runtime for larger properties. It fits all EGO 56V mowers and tools, and its fuel gauge is a handy feature. Users report consistent power throughout the discharge cycle, making it a top pick for demanding mowing sessions.
Pros
- Excellent runtime for large lawns
- Holds power well until empty
- Works with the entire EGO 56V lineup
Cons
- Heavier than smaller capacity batteries
- Premium price point
Ryobi 40V 6.0 Ah Battery
Ryobi’s 40V 6.0 Ah battery offers a great balance of capacity and cost. It is compatible with many Ryobi 40V mowers and outdoor tools. Owners like the longer intervals between charges, though the battery adds some weight to the mower.
Pros
- Long runtime for the price
- Works across Ryobi 40V line
- Durable casing
Cons
- Takes longer to charge
- Heavier than lower capacity models
Black+Decker 20V MAX 4.0 Ah Battery
If you have a smaller lawn and a Black+Decker 20V MAX mower, this 4.0 Ah battery provides enough power for a quick cut. It is lightweight and affordable, making it an easy replacement or spare. Owners say it is best for flat, dry grass and short mowing sessions.
Pros
- Very budget friendly
- Lightweight and easy to swap
- Fits many Black+Decker tools
Cons
- Not suitable for thick or large lawns
- Lower voltage limits cutting power
Makita 18V LXT 5.0 Ah Battery
Makita’s 18V LXT 5.0 Ah battery is designed for their cordless mowers that use two batteries for increased power. It features a robust build and consistent output. Owners who already invest in Makita tools find this battery a natural addition for mowing and other tasks.
Pros
- Reliable performance
- Fast charging with compatible charger
- Fits over 200 Makita tools
Cons
- Need two batteries for most mowers
- Higher cost per battery
Worx 20V PowerShare 4.0 Ah Battery
The Worx PowerShare battery is compatible with all Worx 20V tools, including their popular cordless mowers. It offers decent runtime for small lawns and is priced reasonably. Owners appreciate the universal compatibility across the Worx line, though it is not meant for heavy duty mowing.
Pros
- Works with all Worx 20V tools
- Good value for the capacity
- Lightweight design
Cons
- Limited power for larger mowers
- Charging time is moderate
Craftsman V20 4.0 Ah Battery
Craftsman’s V20 4.0 Ah battery is a solid replacement or spare for their cordless mowers. It provides enough juice for typical suburban lots and pairs well with other V20 tools. Users note that it performs adequately but lacks the runtime of higher capacity options.
Pros
- Affordable and reliable
- Interchangeable with Craftsman V20 tools
- Compact size
Cons
- Shorter runtime than bigger batteries
- Not designed for heavy mowing
Before you buy
The lineup, side by side
| # | Model | Voltage | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | Greenworks 80V 2.0 Ah Battery | 80V | Small to medium lawns with Greenworks tools | 9.2 | Check price |
| 2 | EGO Power+ 56V 5.0 Ah Battery | 56V | Large lawns and heavy use | 9.4 | Check price |
| 3 | Ryobi 40V 6.0 Ah Battery | 40V | Ryobi mower owners needing long runtime | 8.9 | Check price |
| 4 | Black+Decker 20V MAX 4.0 Ah Battery | 20V MAX | Light duty mowing and small yards | 8.0 | Check price |
| 5 | Makita 18V LXT 5.0 Ah Battery | 18V | Makita users with 18V mowers | 8.7 | Check price |
| 6 | Worx 20V PowerShare 4.0 Ah Battery | 20V | Worx mower and tool owners | 8.3 | Check price |
| 7 | Craftsman V20 4.0 Ah Battery | 20V | Craftsman V20 mower and tool owners | 8.1 | Check price |
Frequently asked questions
How long does a lawn mower battery last on a single charge?
It depends on the battery capacity and the mower’s power draw. A 4 Ah battery might last 30 to 45 minutes on a typical mower, while a 6 Ah battery can run up to an hour or more. Factors like grass height, moisture, and mower speed also affect runtime.
Can I use a higher amp hour battery in my mower?
Yes, if the voltage matches. A higher Ah battery will generally provide longer runtime and may be heavier, but it will not damage the mower. Always check the manufacturer’s recommendations for maximum weight and fit.
Are all batteries from the same brand interchangeable between tools?
Usually, batteries within the same voltage family and brand are cross compatible. For example, Ryobi 40V batteries work across their 40V tools. However, some brands have different shapes or connections for different lines, so always verify compatibility.
What is the difference between 20V and 40V batteries?
Voltage indicates the electrical potential. A 40V battery delivers more power to the motor, which can handle thicker grass and larger areas. A 20V battery is lighter and more compact, but it may struggle with heavy mowing conditions.
How should I store my lawn mower battery during winter?
Store it indoors at room temperature, ideally around 70 degrees Fahrenheit. Keep it charged to about 50 to 80 percent. Avoid storing it in a damp shed or garage where temperatures can drop below freezing.
Can I leave my battery on the charger overnight?
Most modern chargers are smart and will stop charging when full, so leaving it overnight is generally safe. However, to maximize battery health, it is best to remove it once fully charged. Follow the manufacturer’s guidance for your specific charger.
Why does my battery die quickly even after a full charge?
If your battery dies quickly, it may be old or damaged. Over time, batteries lose capacity due to charge cycles. Also, cold weather can reduce performance. Consider replacing it if it no longer holds a charge well.
What does the ‘Ah’ rating mean on a battery?
Ah stands for amp hour, which indicates how much electrical charge the battery can store. A higher Ah means more capacity, which translates to longer runtime. For example, a 5 Ah battery can theoretically deliver 5 amps for one hour.
Are aftermarket batteries a good option?
Aftermarket batteries are often cheaper, but they may not have the same quality or safety certifications. Some owners report compatibility issues or shorter lifespans. If you want reliable performance, stick to original brand batteries or well reviewed third party options that match specs.
How do I know if a battery is compatible with my mower?
Check your mower’s manual for the required voltage and model number. Look at the battery you currently use and note its voltage and brand. Then search for a battery with the same voltage and a connector that fits your mower. When in doubt, contact the manufacturer.
The bottom line
For most homeowners, the Greenworks 80V 2.0 Ah battery is the smartest pick because it balances weight, price, and adequate runtime for typical yards. If you have a larger property and already use EGO tools, the EGO Power+ 5.0 Ah battery is worth the extra cost for its superior endurance. Budget conscious buyers with small lawns should consider the Black+Decker 20V MAX 4.0 Ah, but be aware of its limitations. Ultimately, prioritize a battery that matches your mower’s voltage and offers enough capacity for your lawn size.
