Lithium-ion batteries have made cordless lawn mowers a popular alternative to gas-powered machines. They provide quiet operation, eliminate gasoline and engine oil, and make starting a mower as simple as inserting a charged battery and pressing a button.
Best Lithium Ion Batteries for Lawn Mowers
1. EGO Power+ 56V 5.0Ah ARC Lithium Battery
- Arc-Lithium: Industry’s most advanced battery technology
- Keep-Cool Cell Technology
- The patented power management system protects the battery pack from the most harmful elements a battery can face from ov…
The EGO Power+ 56V 5.0Ah ARC Lithium Battery is designed for compatible EGO Power+ outdoor equipment. It is a popular option for homeowners who already use an EGO 56V lawn mower and need a replacement or additional battery.
The 5.0Ah capacity offers a good balance between runtime, weight, and portability. EGO’s 56V platform is also used across many of the company’s cordless outdoor tools.
Features
- 56V lithium-ion battery
- 5.0Ah capacity
- ARC Lithium battery technology
- Designed for compatible EGO Power+ equipment
- Battery management system
- Rechargeable design
- Compatible with various EGO outdoor tools
- Suitable as a replacement or additional battery
This battery can be particularly useful when you want a second battery available while another battery is charging.
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2. Greenworks 40V 6.0Ah Lithium-Ion Battery
- Specialized Battery for Gardening – Replacement for Greenworks 40V battery. Battery type: Li-ion; Capacity: 6000mAh; Vol…
- Generic for Greenworks 40V Tools – Compatible for Greenworks G-MAX 40V tools Lawnmower Trimmer Leaf Blower 20302 20672 2…
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Greenworks offers several cordless battery platforms, and its 40V system is widely used for residential lawn and garden equipment.
The 6.0Ah Greenworks battery provides more capacity than smaller batteries in the same platform. It can be a useful choice for homeowners who have a compatible Greenworks 40V mower and want longer operating time.
Features
- 40V lithium-ion battery
- 6.0Ah capacity
- Designed for compatible Greenworks 40V equipment
- Rechargeable battery technology
- High-capacity design
- Suitable for compatible lawn mowers
- Can work with other compatible 40V outdoor tools
- Useful as a replacement or spare battery
Greenworks also produces 60V and 80V battery systems, so don’t assume that every Greenworks battery will work with every Greenworks mower.
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3. Greenworks 80V 4.0Ah Lithium-Ion Battery
- Rapid charge of 1 hour to full capacity
- One battery, multiple tool compatibility. Compatible with 80V charger model GCH8040
- On board LED lights fuel indicator for on demand reference of remaining power. For use with Greenworks 80V most tools
For homeowners using a compatible Greenworks 80V mower, the Greenworks 80V 4.0Ah battery provides a higher-voltage option for demanding outdoor applications.
The 4.0Ah capacity provides a balance between energy storage and battery weight. It can also be used with other compatible Greenworks 80V equipment.
Features
- 80V lithium-ion battery
- 4.0Ah capacity
- Designed for compatible Greenworks 80V equipment
- High-voltage battery platform
- Rechargeable design
- Battery management technology
- Compatible with selected Greenworks outdoor tools
- Suitable for compatible cordless lawn mowers
The 80V platform is generally intended for more demanding outdoor equipment, making it an option for homeowners who need substantial power from a cordless mower.
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4. RYOBI 40V 6.0Ah Lithium-Ion Battery
- Highest capacity Ryobi 40 volt battery
- Works with all RYOBI 40-Volt lithium-ion tools and chargers
- Fade-free lithium-ion power
The RYOBI 40V battery platform is used across a wide range of cordless outdoor equipment, including compatible lawn mowers, trimmers, blowers, and other yard tools.
A 6.0Ah battery provides a substantial amount of stored energy and can be useful when mowing larger areas or when you want to reduce the number of charging breaks.
Features
- 40V lithium-ion battery
- 6.0Ah capacity
- Designed for compatible RYOBI 40V equipment
- Rechargeable design
- Battery management technology
- Suitable for compatible lawn mowers
- Compatible with selected 40V outdoor tools
- Useful as a replacement or additional battery
One advantage of the RYOBI 40V system is the variety of outdoor equipment available on the same battery platform.
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5. Kobalt 80V 6.0Ah Lithium-Ion Battery
- Compatible with the entire Kobalt 80 Volt max family of tools
- Up to 25 percent more runtime than the standard Kobalt 2.0 Ah 80-volt battery
- Quickly charges in 40 minutes or less
The Kobalt 80V 6.0Ah lithium-ion battery is designed for compatible Kobalt 80V outdoor power equipment. It provides a relatively high capacity for homeowners who need additional runtime from their cordless lawn mower.
If your mower uses the Kobalt 80V system, purchasing an additional battery can be useful for mowing larger lawns without having to wait for the first battery to recharge.
Features
- 80V lithium-ion technology
- 6.0Ah capacity
- Designed for compatible Kobalt 40V equipment
- Rechargeable battery
- High-capacity design
- Suitable for compatible cordless lawn mowers
- Compatible with selected Kobalt 40V outdoor tools
- Designed for repeated charging and use
The battery can also be useful for other compatible Kobalt outdoor equipment, making it more versatile than a battery designed for only one machine.
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6. Toro 60V 7.5Ah Lithium-Ion Battery
- [60V Charger specification] Brand New, Type: Voltage: 60V, Input voltage: AC 120V, Pack: 1 Pack (Battery Not Included)
- [Perfect Compatibility] Replaceable 60V charger 88602. The same charger is suitable for charging the batteries of lawn m…
- 【Product Advantages】The charger’s casing is made of ABS + PC materials, which is both sturdy and durable, fire-resistant…
The Toro 60V 7.5Ah lithium-ion battery is designed for compatible Toro Flex-Force Power System equipment.
With a 7.5Ah capacity, it provides a substantial amount of stored energy and can be a useful option for homeowners with larger lawns or those who want extended mowing sessions.
Features
- 60V lithium-ion battery
- 7.5Ah capacity
- Designed for compatible Toro 60V equipment
- Part of the Flex-Force Power System
- High-capacity battery
- Rechargeable design
- Suitable for compatible Toro cordless lawn mowers
- Can power selected Toro outdoor equipment
The larger capacity makes this type of battery particularly useful when you want to minimize interruptions during mowing.
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What to Look for in a Lithium-Ion Lawn Mower Battery
Before buying a replacement battery, check your mower’s owner’s manual or the label on the original battery. The voltage must match the mower’s battery platform.
You should also consider the battery’s amp-hour rating, commonly written as Ah. A higher Ah rating generally means the battery stores more energy and can provide longer runtime. However, higher-capacity batteries can also be heavier and more expensive.
If you already own cordless tools from a particular brand, choosing a battery from the same platform can be useful because one battery may work with several compatible outdoor tools.
How Long Do Lithium-Ion Mower Batteries Last?
There are two ways to think about battery life: runtime on a single charge and the overall service life of the battery.
Runtime depends on several factors, including battery capacity, mower size, grass height, grass thickness, terrain, mowing speed, and whether the grass is wet.
A 6Ah battery, for example, generally stores more energy than a 4Ah battery on the same voltage platform. However, this does not guarantee a specific number of minutes because mowing conditions vary considerably.
The overall service life of a lithium-ion battery depends on usage, charging habits, storage conditions, temperature, and the battery’s design.
Is a Higher Ah Battery Better?
A higher Ah rating can provide longer runtime, but it isn’t automatically the right choice for every mower owner.
For a small residential lawn, a lower-capacity battery may provide enough runtime to finish the job. A larger battery can make more sense for larger properties where stopping to recharge is inconvenient.
Higher-capacity batteries can also be heavier and more expensive. Therefore, consider the size of your lawn and the manufacturer’s recommended batteries before choosing the largest option available.
Should You Buy a Spare Battery?
A second battery can be worthwhile if your mower cannot complete your lawn on one charge.
Instead of waiting for the first battery to recharge, you can switch to the charged battery and continue mowing. This can be especially useful for larger lawns or properties with thick grass.
A spare battery can also be useful if you own several compatible cordless yard tools.
Final Thoughts
The best lithium-ion battery for a lawn mower depends primarily on compatibility, capacity, and the size of your lawn.
The EGO Power+ 56V 5.0Ah, Greenworks 40V 6.0Ah, Greenworks 80V 4.0Ah, RYOBI 40V 6.0Ah, Kobalt 40V 6.0Ah, and Toro 60V 7.5Ah are options to consider when they match your mower’s battery platform.
Before ordering any replacement battery, check the exact mower model, voltage, and battery system. Do not assume that batteries from the same brand are interchangeable across different voltage platforms.
For larger lawns, a higher-capacity battery or an additional battery can reduce charging interruptions. For smaller lawns, a lower-capacity battery may be lighter and more economical while still providing enough runtime.
