Powering your Greenworks 40V lawn mower and other compatible tools requires a reliable and long-lasting battery. With options ranging from genuine Greenworks products to high-quality third-party replacements, finding the right balance of runtime, compatibility, and value is key to a perfectly manicured lawn. The right battery ensures your mower has the endurance to tackle your entire yard without frustrating mid-job interruptions.
This roundup simplifies your search by highlighting nine of the best 40V battery options available. We cover various capacities and brands to help you find the perfect power source, whether you need a quick swap for a smaller lawn or extended runtime for more demanding tasks. Understanding the features and compatibility of each will help you make an informed decision for your outdoor power equipment.
The Best Greenworks 40V Batteries for Your Lawn Mower
- Greenworks 40V 4.0Ah Lithium-Ion Battery
- MAFACBAC 29472 for Greenworks 40V Battery
- Qwenoer [Upgrade BMS] 40V 6.0Ah Lithium Battery
- Fhybat 2 Packs 6000mAh Lithium ion Replacement
- 2 Pack 29472 6000mAh 40V Lithium Battery
- Amitself Upgraded 4.0Ah Battery Replacement
- 40V 6.0Ah Replacement for Greenworks 40V Battery
- Amitself 4.0Ah High Capacity Battery and Charger
- Greenworks 40V 2.0Ah Lithium Ion Battery
Greenworks 40V 4.0Ah Lithium-Ion Battery
As a genuine Greenworks product, this 4.0Ah battery is engineered for reliability and performance. It offers 50% more capacity than the standard 2.0Ah battery, providing a noticeable extension in runtime for your lawn mower and other tools. This means you can cover more ground on a single charge, making it a solid middle-ground option for average-sized lawns.
The battery features a convenient LED fuel gauge that gives you immediate feedback on the state of charge, so you are never caught off guard by a low battery. It is compatible with over 75 Greenworks 40V tools, offering great versatility. With no memory effect and virtually no self-discharge, it is ready to use even after a period of storage.
MAFACBAC 29472 for Greenworks 40V Battery
This MAFACBAC battery is a high-capacity 6.0Ah replacement designed to power your Greenworks G-MAX 40V lawn mower and tools for longer periods. The increased capacity is ideal for larger properties or for users who operate multiple tools in one session without wanting to pause for a recharge. It serves as a direct replacement for several Greenworks battery models.
Built with lithium-ion technology, it ensures consistent power delivery to your equipment. The battery is designed to be compatible with a wide range of Greenworks 40V tools, including mowers, trimmers, and leaf blowers, as listed in its extensive compatibility chart. This makes it a versatile and powerful addition to your toolset.
Qwenoer [Upgrade BMS] 40V 6.0Ah Lithium Battery
![Qwenoer [Upgrade BMS] 40V 6.0Ah Lithium Battery](https://m.media-amazon.com/images/I/41gX-CXK92L._SL500_.jpg)
The Qwenoer battery emphasizes an upgraded Battery Management System (BMS) for improved safety and performance. This 6.0Ah battery is built to double the runtime of standard capacity packs, allowing you to complete more work on a single charge. It utilizes top-tier 18650 cells to ensure stable power output and longevity.
It boasts wide compatibility with many GreenWorks 40V G-MAX power tools, though it is important to note it is not for Gen 1 models. An integrated LED indicator allows you to easily check the battery’s charge status at a glance, helping you plan your lawn care tasks effectively and avoid unexpected power loss.
Fhybat 2 Packs 6000mAh Lithium ion Replacement
This offering from Fhybat provides excellent value by including two 6.0Ah batteries in one package. Having a second battery is a significant advantage for users with larger lawns or multiple tools, as it completely eliminates downtime—when one battery depletes, you can immediately swap in the fully charged second one and continue working.
Each battery provides three times the capacity of a standard 2.0Ah pack, delivering substantial runtime. They are designed as replacements for Greenworks 40V models 29462 and 29472 and are compatible with a broad spectrum of G-MAX cordless tools. This set is a practical solution for ensuring you always have power on hand.
2 Pack 29472 6000mAh 40V Lithium Battery
This two-pack of 6.0Ah batteries is another great option for users seeking uninterrupted workflow. The high capacity ensures each battery lasts longer, and having two means you can rotate them between use and charging. This is particularly useful for professional landscapers or homeowners with extensive property to maintain.
The batteries feature a precise interface design with an on-board fuel gauge for monitoring charge levels. Surrounding exothermic holes are included to help speed up cooling during use and charging, which can contribute to the battery’s overall lifespan and safe operation. They are confirmed to be compatible with second-generation Greenworks 40V GMAX tools.
Amitself Upgraded 4.0Ah Battery Replacement
The Amitself 4.0Ah battery is a balanced choice for those who need a reliable replacement without the highest capacity. Its 4000mAh design provides a longer run time than entry-level options, making it suitable for medium-sized lawns. It is engineered for long-lasting performance and consistent power delivery.
This battery is fully compatible with a wide range of Greenworks 40V power tools, specifically the second-generation models. It includes a helpful three-LED indicator that displays the remaining power when a button is pressed. This feature allows you to manage your work time wisely and know when it is time for a recharge.
40V 6.0Ah Replacement for Greenworks 40V Battery
This 6.0Ah replacement battery is built to deliver extended runtime for demanding lawn care tasks. With a high 240Wh wattage, it provides ample power to handle tougher mowing conditions and larger areas. It is a direct replacement for several popular Greenworks battery model numbers.
Compatibility with Greenworks G-MAX 40V tools ensures it will work with your lawn mower and other equipment like chainsaws and trimmers. The battery is equipped with four LED indicators, giving you a clear and immediate reading of the remaining run time. This helps reduce the risk of your work being interrupted by a surprise power loss.
Amitself 4.0Ah High Capacity Battery and Charger
This Amitself kit is a complete power solution, including both a 4.0Ah battery and a compatible charger. The convenience of having a dedicated charger means you can keep your battery ready for action without needing to use the one that may have come with your tool. The 4000mAh capacity offers a solid runtime for most mowing jobs.
The included charger is designed with safety as a priority, featuring a multi-layer protection system and an efficient heat dissipation design. This promotes a safe and stable charging process, which can help extend the overall service life of the battery. A built-in LED indicator on the charger shows the charging status in real time.
Greenworks 40V 2.0Ah Lithium Ion Battery
The Greenworks 40V 2.0Ah battery is the standard, entry-level option that is perfect for lighter duties or as an extra battery for shorter tasks. If you have a smaller lawn or use lower-drain tools like a string trimmer or blower, this battery provides ample power without the added weight and size of higher-capacity models.
As an official Greenworks product, it guarantees full compatibility and reliability with your 40V system. It shares the same benefits as its larger siblings, including no memory effect and minimal self-discharge. For users who do not require extended runtime, this battery offers a cost-effective and lightweight power source.
Buying Guide: How to Choose the Right Greenworks 40V Battery
When I first switched to a Greenworks 40V mower, I quickly learned that not all batteries are created equal. The right battery can mean the difference between finishing your lawn in one go and having to stop for a multi-hour recharge. So, let’s talk about what you should be looking for when you need to find the best Greenworks 40V batteries for lawn mowers available.
The single most important number on the battery is the Amp-hour (Ah) rating. Think of this as the gas tank. A higher Ah rating means more runtime. For smaller lawns, a 2.0Ah or 4.0Ah battery might be enough. But for most standard-sized lawns, I recommend starting with at least a 5.0Ah battery. If you have a larger property or just hate the thought of running out of juice, stepping up to a 6.0Ah, 8.0Ah, or even the massive 12.0Ah battery is the way to go. More capacity does mean a heavier and more expensive battery, but the peace of mind is often worth it.
Next, consider your existing tools. The beauty of the Greenworks 40V system is that the batteries are interchangeable across their entire lineup. If you already own a Greenworks leaf blower or string trimmer, you can use those batteries in your mower. This opens up a great strategy: owning multiple, smaller batteries. You can use one in the mower and have another charging, effectively giving you unlimited runtime as long as you’re willing to swap them out. This can be more cost-effective than buying one gigantic battery.
You also need to think about the charger. The standard charger that comes with most tools is fine, but it’s slow. If you’re working with multiple batteries or have a large lawn, investing in a fast charger is a game-changer. It can cut your charging time by more than half, getting you back to work much faster.
Finally, pay attention to the battery’s construction and warranty. Look for batteries with a built-in charge indicator. This simple feature lets you check the remaining power with a press of a button, so you’re never caught off guard. Also, check the warranty period. A longer warranty is a good sign of the manufacturer’s confidence in their product. By balancing your lawn’s size, your budget, and your future tool-buying plans, you can find the perfect battery to keep your mower running strong.
Frequently Asked Questions
Are all Greenworks 40V batteries compatible with my mower?
Yes, absolutely. This is one of the best features of the Greenworks 40V ecosystem. Any Greenworks 40V battery will fit and work in any Greenworks 40V tool, including all their lawn mowers. Whether you have an older model or the latest one, you can use a 2.0Ah, 4.0Ah, 5.0Ah, or any other capacity battery. This gives you a ton of flexibility when you are looking for the best Greenworks 40V batteries for lawn mowers available.
How long will a Greenworks 40V battery last on a single charge?
This is the million-dollar question, and the answer depends on two main things: the battery’s Amp-hour (Ah) rating and your mowing conditions. A 4.0Ah battery might give you about 25-30 minutes of runtime in average grass. A 5.0Ah battery bumps that up to around 45 minutes, and an 8.0Ah can often push past an hour. Remember, thicker, wetter grass will drain the battery much faster than dry, thin grass.
Can I use two batteries at the same time in my mower?
This depends entirely on your specific mower model. Many Greenworks mowers are single-battery machines. However, they do manufacture specific “Dual Force” mowers that are designed to accept two batteries simultaneously. Using two batteries in these models can either double your runtime or combine the power for enhanced performance. Check your mower’s manual or product description to see if it has this capability.
What is the lifespan of a Greenworks 40V battery?
A lithium-ion battery, like the ones Greenworks uses, doesn’t last forever, but it should give you several years of reliable service. You can typically expect around 500 to 800 full charge cycles before you notice a significant drop in its ability to hold a charge. Proper care, like storing it in a cool, dry place and not constantly draining it to zero, will help maximize its lifespan.
Is it okay to leave my battery on the charger after it’s full?
While the modern chargers and batteries have built-in protection to prevent overcharging, it’s still a good habit not to leave the battery on the charger for extended periods, like days or weeks at a time. I make it a practice to unplug the charger once the indicator light shows that the battery is full. For long-term storage, it’s best to store the battery with about a 40-80% charge.