Top Battery Picks for Homeowner Lawn Edgers
For most homeowners, the Greenworks 40V 2.5Ah battery is the top pick because it balances weight, runtime, and price for light to medium edging tasks. It works with a wide range of Greenworks tools, so you can share batteries across your yard care lineup. The main limitation is that it may not provide enough runtime for very large lawns, so consider a higher capacity option if your yard exceeds a quarter acre.
Cordless edgers free you from extension cords and gas fumes, but the battery determines how long you can work and how well the tool performs. A good battery should hold a charge, deliver consistent power, and fit your edger without adding too much weight.
We looked at batteries from Greenworks, EGO, Ryobi, Milwaukee, DEWALT, and Craftsman. These are the ones homeowners commonly pair with edgers from the same brand. We considered runtime, charge time, durability, and value to help you choose.
Before you buy
Our top picks
Greenworks 40V 2.5Ah Battery (29472)
The Greenworks 40V 2.5Ah battery is a solid middle ground for edging. It offers enough runtime for about 30 minutes of continuous edging, which suits typical suburban lots. It is compatible with all Greenworks 40V tools, so you can use it with string trimmers, blowers, and chainsaws. Owners report that it holds a charge well over many seasons.
Pros
- Lightweight and easy to handle
- Works with many Greenworks tools
- Reliable charge retention
Cons
- Not enough for very large lawns
- Charge time is around 60 minutes
EGO Power+ 56V 2.5Ah Battery (BA1400)
EGO’s 56V 2.5Ah battery delivers strong, consistent power that helps edgers cut through tough grass and roots. It is built with weather-resistant construction, so it can handle outdoor conditions. While it is pricier than some, owners say it lasts for years. It works with all EGO 56V tools, including their popular edger.
Pros
- High power output
- Weather resistant design
- Long lifespan
Cons
- Heavier than some
- Premium price
Ryobi 18V ONE+ 4.0Ah Battery (P102)
The Ryobi 18V ONE+ 4.0Ah battery is an affordable option that works with a vast ecosystem of Ryobi tools. It offers decent runtime for small to medium edging jobs. Many homeowners already own Ryobi tools, so this battery can serve double duty. It charges quickly and is backed by a 3 year warranty.
Pros
- Low cost
- Fast charging
- Huge tool compatibility
Cons
- Lower voltage means less power
- May need multiple batteries for large yards
Milwaukee M18 5.0Ah Battery (48-11-1850)
Milwaukee’s M18 5.0Ah battery provides extended runtime for edgers that demand more. It is built to withstand job site conditions, with a rugged housing and Redlink intelligence to prevent overheating. Homeowners with large properties appreciate the extra capacity. It works with all M18 tools, making it a versatile addition.
Pros
- Long runtime
- Durable construction
- Overload protection
Cons
- Heavier
- Higher price
DEWALT 20V MAX 5.0Ah Battery (DCB205)
The DEWALT 20V MAX 5.0Ah battery is a reliable power source for edgers that accept 20V batteries. It features a fuel gauge to check charge level easily. Owners report consistent performance and long life. It is compatible with hundreds of DEWALT tools, so it is a smart investment for those already in the system.
Pros
- Fuel gauge for charge status
- Wide compatibility
- Reliable performance
Cons
- Slightly bulky
- May be overkill for small yards
Craftsman V20 4.0Ah Battery (CMCB204)
Craftsman’s V20 4.0Ah battery offers a good balance of power and runtime for homeowner edgers. It is designed to work with Craftsman V20 tools, including their edger. The battery has a compact design that fits comfortably on the tool. It charges quickly and holds up well over time.
Pros
- Compact and lightweight
- Quick charge time
- Good runtime
Cons
- Limited to Craftsman tools
- Not as powerful as higher voltage
Greenworks 40V 4.0Ah Battery (29482)
If you have a larger lawn, the Greenworks 40V 4.0Ah battery nearly doubles the runtime of the 2.5Ah version. It still fits all Greenworks 40V tools, giving you flexibility. Owners say it allows them to finish edging without stopping to recharge. It is a bit heavier, but the extra capacity is worth it for bigger properties.
Pros
- Longer runtime
- Compatible with many tools
- Good value
Cons
- Heavier
- Takes longer to charge
Side by side
| # | Model | Voltage | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | Greenworks 40V 2.5Ah Battery (29472) | 40V | Best overall for most homeowners | 9.4 | Check price |
| 2 | EGO Power+ 56V 2.5Ah Battery (BA1400) | 56V | Best for power and durability | 9.2 | Check price |
| 3 | Ryobi 18V ONE+ 4.0Ah Battery (P102) | 18V | Best for budget conscious buyers | 8.8 | Check price |
| 4 | Milwaukee M18 5.0Ah Battery (48-11-1850) | 18V | Best for heavy duty use | 8.7 | Check price |
| 5 | DEWALT 20V MAX 5.0Ah Battery (DCB205) | 20V | Best for DEWALT tool owners | 8.6 | Check price |
| 6 | Craftsman V20 4.0Ah Battery (CMCB204) | 20V | Best for Craftsman tool owners | 8.4 | Check price |
| 7 | Greenworks 40V 4.0Ah Battery (29482) | 40V | Best for extended runtime | 8.9 | Check price |
Good to know
Can I use any battery with my lawn edger?
No. Lawn edgers are designed to work with batteries from the same brand and voltage. Using a different brand may damage the tool or battery. Always check the compatibility before purchasing.
What does Ah mean on a battery?
Ah stands for amp hours. It indicates the battery’s energy storage capacity. Higher Ah means longer runtime, but also usually a heavier and more expensive battery.
How long does a battery last on a lawn edger?
Runtime varies by voltage, capacity, and conditions. A 2.5Ah 40V battery might last 20 to 30 minutes. A 5.0Ah 18V battery could last similar. Thick grass and wet conditions reduce runtime.
Is a higher voltage battery always better?
Higher voltage typically provides more power, which helps cut through tough edges. However, higher voltage batteries and tools are often heavier and more expensive. For a homeowner, 40V is a good balance.
Can I leave my battery on the charger all the time?
Modern chargers stop charging when the battery is full, so leaving it is generally safe. However, it is best to remove the battery once charged to avoid potential wear over time.
How should I store my battery in winter?
Store your battery indoors at room temperature. Avoid freezing conditions. Charge it to about 50% before storing for long periods. Recharge every three to six months to maintain health.
Why does my battery die quickly?
Rapid drain can be due to cold weather, heavy grass, or an old battery. Also, using a lower capacity battery on a high draw tool will shorten runtime. Check if the battery needs replacement if it is old.
Can I use a higher Ah battery than the one that came with my edger?
Yes, if it is the same voltage and brand. A higher Ah battery will last longer and is usually compatible. It may be slightly heavier, but it will not damage the tool.
What is the difference between 18V and 40V batteries?
40V batteries deliver more power, which can cut through thicker edges more easily. 18V batteries are lighter and often cheaper, but may struggle with heavy growth. Choose based on your lawn’s demands.
Are aftermarket batteries safe to use?
Aftermarket batteries may be cheaper, but they often lack safety features, have shorter lifespan, and may not fit perfectly. For best performance and safety, stick with original brand batteries.
Our pick
For most homeowners, the Greenworks 40V 2.5Ah battery is the smartest choice because it offers a great balance of cost, weight, and runtime, and it works with a whole family of tools. If you have a larger yard, step up to the Greenworks 40V 4.0Ah for extra runtime. For those already invested in another brand, choose the battery that matches your tool system, as compatibility is key.
