Choosing the right battery for your electric lawn mower is crucial for achieving a pristine lawn without the frustration of unexpected power loss. A high-quality, compatible battery ensures your mower has the endurance to tackle your entire yard on a single charge, providing consistent power for a clean cut every time. With numerous options available from various brands, finding the perfect match for your specific mower model can feel overwhelming.
This guide simplifies your search by showcasing the top-performing batteries for 2025. We’ve compiled a list of reliable replacements and genuine OEM options for popular brands like Ryobi, Greenworks, and EGO, as well as robust batteries for riding mowers. Whether you need a high-capacity lithium-ion pack or a dependable lead-acid battery, our roundup will help you make an informed decision to keep your lawn care routine running smoothly.
The Best Electric Lawn Mower Batteries for 2025
- MAFACBAC 6Ah 40V Lithium Battery: Replacement for Ryobi 40 Volt
- TREE.NB 6.0Ah 40V Lithium Battery Replacement for GreenWorks 40V
- ARyee 6.0Ah 40V Battery Replacement for GreenWorks 40v Battery
- Greenworks 40V 4.0Ah Lithium-Ion Battery (Genuine Greenworks Battery)
- UPLUS U1 Riding Lawn Mower Battery, 12V 360CCA Garden Tractors Battery
- Marxon U1 330CCA Riding Lawn Mower Batteries, Garden Tractors Battery
- MARXON U1 280CCA Riding Lawn Mower Batteries, Garden Tractors Battery
- Mighty Max Battery ML-U1 12V 200CCA Battery for Craftsman 25780
- EGO Power+ Battery 56V, 7.5Ah – BA4200T
- Mighty Max Battery 48V 20Ah LiFePO4 Deep Cycle Battery
MAFACBAC 6Ah 40V Lithium Battery
This high-capacity 40V lithium-ion battery from MAFACBAC is designed as a direct replacement for a wide range of Ryobi 40V tools and lawn mowers. With a 6.0Ah capacity, it provides substantial runtime, allowing you to cover more ground on a single charge. It is compatible with numerous Ryobi models, including the RY40460 and RY401170VNM mowers, as well as string trimmers and other tools in the 40V ecosystem.
The battery is built for seamless integration, snapping easily into your existing Ryobi equipment. Its robust construction ensures reliable performance, delivering the consistent power needed for demanding lawn care tasks. This makes it an excellent choice for homeowners looking for a cost-effective alternative to OEM batteries without sacrificing performance.
TREE.NB 6.0Ah 40V 29472 Lithium Battery
The TREE.NB battery serves as a powerful 6.0Ah replacement for GreenWorks 40V G-MAX second-generation tools. It is engineered to match the performance of the original battery, offering extended runtime for your lawn mower and other compatible garden tools. This battery is a perfect fit for a long list of GreenWorks models, including the 29472, 29462, and 24282.
User-friendly features include an integrated LED charge level indicator, which allows you to monitor the remaining power at a glance. The housing is designed with exothermic holes to promote better heat dissipation during use, contributing to the battery’s longevity and safe operation. It’s a reliable aftermarket option for keeping your GreenWorks equipment running strong.
ARyee 6.0Ah 40V Battery Replacement
Another excellent alternative for GreenWorks 40V tool owners, the ARyee battery delivers high performance with its 6000mAh lithium-ion cells. It is built to provide a long service life and is compatible with many GreenWorks G-MAX power tools, ensuring you can power your mower and other garden implements without issue.
A key feature is the four-LED indicator panel that clearly displays the current charge level. This helps you plan your work sessions effectively, preventing you from starting a job with insufficient power. The battery is constructed for durability and easy use, snapping securely into your tools for a reliable connection every time.
Greenworks 40V 4.0Ah Lithium-Ion Battery
For those who prefer genuine OEM parts, this Greenworks 40V 4.0Ah battery is the official choice. It offers 50% more capacity than the standard 2.0Ah battery, resulting in significantly less downtime and more productivity during your lawn care routine. The lithium-ion technology features no memory effect and very low self-discharge, so it holds its charge well when not in use.
This battery is guaranteed to be compatible with over 60 different Greenworks 40V tools, providing exceptional versatility for your entire outdoor power equipment system. The integrated 4-LED fuel gauge gives you immediate and accurate feedback on the state of charge, allowing for better planning of your yard work.
UPLUS U1 Riding Lawn Mower Battery
The UPLUS U1 is a maintenance-free AGM battery designed specifically for the demands of riding lawn mowers and garden tractors. With a robust 12V 26Ah and 360 CCA rating, it provides reliable starting power and is built to last for over five years. The sealed lead-acid design means no spills, no leaks, and no need to check water levels.
Safety and quality are paramount with this battery, as it is manufactured using 99.99% pure primary lead for better charging efficiency and reliability. It is widely compatible with brands like John Deere, Cub Cadet, Husqvarna, and Craftsman, making it a universal and trustworthy replacement option for many homeowners.
Marxon U1 330CCA Riding Lawn Mower Batteries
This Marxon U1 battery offers a strong 330 Cold Cranking Amps, ensuring your riding mower starts up quickly and reliably. As a sealed lead-acid battery, it is entirely maintenance-free, eliminating the hassle of battery upkeep. Its dimensions and terminal polarity are standard for the U1 group, ensuring a correct fit in a wide array of mowers.
The battery is constructed from shockproof material that provides enhanced heat resistance, making it more durable and usable in high-temperature environments commonly encountered during summer mowing. This build quality helps prevent deformation and extends the functional life of the battery under tough conditions.
MARXON U1 280CCA Riding Lawn Mower Batteries
A slightly different offering from Marxon, this U1 battery provides 280 CCA, which is sufficient for many popular riding mower models. It shares the same reliable, maintenance-free AGM construction as its sibling, promising a long service life of over five years thanks to its high-purity materials and corrosion-resistant structure.
Like the other Marxon battery, it benefits from a shockproof design that improves its resilience to heat and physical stress. This makes it a sturdy and dependable power source for your garden tractor, capable of withstanding the vibrations and temperature fluctuations of regular outdoor use.
Mighty Max Battery ML-U1 12V 200CCA Battery
The Mighty Max ML-U1 is a 12V sealed lead-acid battery with 200 Cold Cranking Amps, designed to fit specific models like the Craftsman 25780 lawn tractor. Its SLA/AGM technology is spill-proof and offers a high discharge rate, making it a safe and effective choice for powering your mower’s electrical system.
This battery is known for operating across a wide temperature range and having a long service life with good deep discharge recovery. This reliability ensures that your mower is ready to go when you are, season after season, with minimal maintenance required.
EGO Power+ Battery 56V, 7.5Ah – BA4200T
The EGO Power+ 56V 7.5Ah battery represents the high end of cordless lawn care power. Its substantial capacity provides extended runtime, making it ideal for larger lawns. An advanced power management system protects the battery from common threats like overheating and over-discharging, which helps preserve its health over time.
A significant advantage of this battery is its fast-charging capability; when used with an EGO Rapid Charger, it can be fully charged in just 60 minutes. The upgraded fuel gauge is more than a simple power indicator—it shows the estimated remaining run time, so you can manage your work with precision.
Mighty Max Battery 48V 20Ah LiFePO4 Deep Cycle Battery
For electric lawn mowers requiring a 48V system, this Mighty Max LiFePO4 battery is a formidable option. With a high 20Ah capacity, it is built for deep cycle applications, meaning it can provide sustained power over longer periods, which is essential for mowing large properties. The Lithium Iron Phosphate (LiFePO4) chemistry is known for its safety, stability, and long cycle life.
This battery type is significantly lighter and more efficient than traditional lead-acid batteries of similar voltage and capacity. It is an excellent choice for modern electric mowers that need a durable and long-lasting power source, offering many charge cycles and consistent performance throughout its life.
Buying Guide: How to Choose the Right Battery for Your Electric Lawn Mower
When I first switched to an electric mower, I didn’t realize the battery was the heart of the whole operation. Choosing the right one makes all the difference between finishing your lawn in one go and running out of power halfway through. Let’s break down what you really need to look for.
The first and most critical spec is voltage. This is the power potential. Most home mowers run on 40V, 56V, or 80V systems. A higher voltage generally means more torque for tackling thick grass and hills. If you have a small, flat yard, a 40V system is probably sufficient. For larger or more challenging lawns, I’d lean towards 56V or 80V. Always check your mower’s manual; using the wrong voltage can damage it.
Next up is Amp-Hours, or Ah. Think of this as the size of the fuel tank. A 2.0Ah battery will run for a shorter time than a 5.0Ah battery of the same voltage. For a typical suburban lawn, I find a 4.0Ah to 5.0Ah battery is a great sweet spot, offering a solid runtime without being overly heavy or expensive. If you have a huge property, you’ll want to prioritize the highest Ah rating you can get.
Battery technology matters too. Almost all modern mowers use Lithium-ion (Li-ion) batteries, and for good reason. They’re lightweight, hold a charge for a long time, and don’t have the “memory effect” that older battery types suffered from. When you’re looking, pay attention to the battery management system (BMS). A good BMS protects against overcharging, overheating, and deep discharge, which dramatically extends the battery’s overall lifespan.
Finally, consider the ecosystem. If you already own other cordless tools from a brand like DeWalt, Ryobi, or EGO, it makes a ton of sense to stick with that brand for your mower battery. This allows you to share batteries between your tools, which is both convenient and cost-effective. Also, look at the warranty. A reputable company will often back their batteries with a 3-year or longer warranty, which is a good sign of quality and gives you peace of mind for your investment in the 10 best batteries for electric lawn mowers (2025 guide).
Frequently Asked Questions
How long do electric lawn mower batteries typically last?
This depends on two things: per-charge runtime and overall lifespan. On a single charge, most modern batteries will last between 45 to 90 minutes, which is enough for an average-sized lawn. In terms of overall lifespan, a good quality Li-ion battery should last for around 500 full charge cycles before you notice a significant drop in performance. For most people, that translates to about 5 years of regular use. Proper care, like storing it in a cool, dry place and not constantly draining it to zero, will help it last even longer.
Can I use a higher Ah battery in my mower?
Yes, absolutely, and it’s often a great upgrade. As long as the voltage matches what your mower requires, a higher Amp-hour (Ah) battery will simply give you more runtime. It’s like putting a larger gas tank in your car; the engine runs the same, but you can drive farther between fill-ups. The battery might be physically larger and heavier, but it won’t harm your mower. In fact, it’s one of the easiest ways to extend your mowing time.
Why won’t my lawn mower battery hold a charge?
This is frustrating, and a few things could be the culprit. The most common cause is age; after several years and hundreds of cycles, batteries simply wear out. Extreme temperatures are another killer. Leaving the battery in a hot shed all summer or a freezing garage all winter can permanently damage its internal components. Finally, it could be the charger itself. Before you assume the battery is dead, try a different charger if you can. If it’s not the charger, the battery has likely reached the end of its usable life.
Are aftermarket or generic batteries safe to use?
This is a bit of a gamble. While generic batteries are often cheaper, I’m cautious about them. Brand-name batteries are engineered with specific battery management systems to work safely with their tools. A cheap aftermarket battery might not have the same safety protections, which could pose a risk of overheating or even fire. It also may not deliver consistent power, leading to poor mower performance. To be safe, I usually recommend sticking with batteries from the original equipment manufacturer (OEM) or highly reputable third-party brands with strong reviews.
How should I store my mower battery over the winter?
Don’t just throw it in a drawer and forget about it! For long-term storage, the key is to give it a partial charge. I usually charge my battery to about 40-60% before storing it. Storing a battery fully charged or completely dead for months can stress the cells and reduce its lifespan. Find a cool, dry place for storage, like a closet inside your house, which is much better than a non-temperature-controlled garage or shed. Check the charge level every few months and give it a top-up if it drops too low.