Upgraded Replacement for Greenworks 40V 4.0Ah
4.3Editor score
UL FCC and ROHS certified
Extended runtime capacity
Smart heat dissipation design
In this guide
Keeping your cordless yard tools running smoothly often depends on having a reliable power source when the original battery fades. Choosing the right Greenworks 40V battery replacement ensures you can mow, trim, and blow without unexpected interruptions during peak gardening seasons.
We analyzed ten top-rated options ranging from genuine OEM units to high-capacity third-party alternatives. Our comparison focuses on runtime performance, safety certifications, charging speed, and compatibility with the extensive G-MAX tool ecosystem available today.
Each pick below highlights specific strengths like extended amp-hour capacity or integrated fuel gauges to help you match the battery to your needs. Note that product availability and pricing fluctuate frequently so check current listings before making your final purchase decision.
Top 3 Picks for Best Greenworks 40V Battery Replacement
Greenworks 40V 4.0Ah Lithium-Ion Battery
4.5Editor score
Fade-free power output
Integrated LED fuel indicator
Compatible with 75+ tools
Greenworks 40V 4.0Ah USB Lithium-Ion Battery
4.4Editor score
Built-in USB charging port
Quick charge time
Fade-free power delivery
Top 10 Best Greenworks 40V Battery Replacement in 2026 Compared
The following table provides a side-by-side view of all ten products we evaluated. It highlights key specifications such as capacity and voltage along with user ratings to help you quickly identify the best match for your specific Greenworks power tools.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Greenworks 40V 4.0Ah
4.0Ah capacity
Genuine OEM battery
LED fuel indicator
75+ tool compatible
4.5Editor score
Editor's Choice
Upgraded Replacement 4.0Ah
4000mAh capacity
Triple certified safety
LED status indicator
Gen 2 tools only
4.3Editor score
Best Premium
4.0Ah High Capacity with Charger
160Wh wattage
Includes charger unit
LED charging status
Multi-layer protection
4.2Editor score
1 Pack 29472 6000mAh
6.0Ah capacity
4-level LED indicator
Heat release holes
Snap-in design
4.5Editor score
2Pack 40V 4.0Ah with Charger
Dual pack option
Includes dual-port charger
4 LED indicators
Gen 2 compatible
4.3Editor score
1Pack 6.0Ah 40V
240Wh wattage
Precision design fit
Composite housing
Quick-release button
4.1Editor score
6.5Ah 40V Battery and Charger
6500mAh capacity
Built-in USB port
2.0 AMP charger
ECP chip protection
5.0Editor score
2 Pack 40V 6000mAh
Dual battery pack
High capacity cells
4 LED indicators
Black finish
4.4Editor score
TREE.NB 6.0Ah 29472
Integrated fuel gauge
Exothermic holes
Microchip protection
Gen 2 only
4.0Editor score
Greenworks 40V 4.0Ah USB
USB charging port
120 min charge
Genuine battery
75+ tool compatible
4.4Editor score
1. Greenworks 40V 4.0Ah – Best Overall Greenworks 40V Battery Replacement
Greenworks 40V 4.0Ah Lithium-Ion Battery
Fade-free power output
Integrated LED fuel indicator
Built-in battery management
75+ tool compatible
This genuine Greenworks 40V 4.0Ah Lithium-Ion Battery stands out as the top choice for users prioritizing reliability and safety. With a 4.5 rating it delivers fade-free power that ensures consistent performance across your entire yard care routine.
Pros
- Reliable OEM performance
- Safety safeguards included
- Universal tool compatibility
- No memory loss
- Instant power feedback
Cons
- Higher cost point
- Standard capacity limit
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The integrated LED fuel indicator provides immediate feedback on your battery state so you never start a task mid-way through. Its built-in battery management system protects against overheating and short circuits ensuring long-term tool longevity.
While it carries a higher price tag than third-party alternatives the peace of mind from using an OEM part is often worth the investment for heavy users. The lack of memory loss means you can charge it anytime without waiting for a full drain.
Ideal for homeowners who want seamless integration with their existing G-MAX tools this battery offers total freedom of movement. It is the definitive pick for those who value consistent power and safety features above all else.
Reliable Performance
The fade-free power delivery ensures your tools run at full speed until the battery is nearly depleted.
Universal Compatibility
Compatible with 75+ Greenworks tools this battery simplifies your power management across multiple garden devices.
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2. Upgraded Replacement – Best Budget Greenworks 40V Battery Replacement
Upgraded Replacement for Greenworks 40V 4.0Ah
4000mAh high capacity
Triple certified safety
Smart heat dissipation
Gen 2 tools only
For those seeking value without sacrificing essential safety features this upgraded replacement battery offers an attractive alternative to OEM options. It holds a 4.3 rating and is specifically designed for second-generation 40V tools to ensure perfect compatibility.
Pros
- Affordable pricing
- Triple certified safety
- Extended runtime
- Precise interface fit
- Efficient cooling
Cons
- Not for Gen 1
- Third-party origin
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The triple certification from UL FCC and ROHS gives confidence in its safety standards while the six-fold protection system guards against overcharging and overheating. Precision heat dissipation maintains optimal temperatures during heavy use prolonging the battery life.
Although it is a third-party product the smart design ensures steady power output that rivals original batteries. Just note that it is not compatible with first-generation tools so verify your model before purchasing to avoid returns.
This choice is perfect for budget-conscious gardeners who need reliable power for trimmers and blowers. It delivers extended runtime and consistent operation making it a smart pick for general yard maintenance tasks.
Safety Certifications
UL FCC and ROHS certifications confirm this battery meets strict industry safety and performance standards.
Extended Runtime
The 4000mAh capacity provides longer service life allowing you to complete larger projects on a single charge.
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3. Greenworks USB Battery – Best Premium Greenworks 40V Battery Replacement
Greenworks 40V 4.0Ah USB Lithium-Ion Battery
Built-in USB port
Quick charge time
Fade-free power
75+ tool compatible
This premium Greenworks 40V 4.0Ah USB Lithium-Ion Battery adds unique versatility with a built-in USB port for charging small devices on the go. With a 4.4 rating it offers the same fade-free power as the standard genuine battery but with added convenience.
Pros
- USB charging capability
- Genuine OEM quality
- Fast 120 min charge
- No memory loss
- Snap-in design
Cons
- Highest price point
- Limited to specific chargers
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The quick charge time of 120 minutes minimizes downtime between tasks keeping your workflow efficient. Its genuine OEM status ensures perfect fit and safety while the design allows easy snapping in and out of tools.
While it comes at a higher cost the USB feature provides practical utility for charging phones or sensors while you work. It is compatible with G-MAX 40V tools and specific chargers ensuring seamless integration.
Best suited for tech-savvy homeowners or professionals who need to stay connected while working outdoors this battery combines reliability with modern utility. It is the top choice for those who value extra features alongside proven performance.
USB Utility
The integrated USB charging port allows you to power mobile devices directly from the battery during outdoor use.
Quick Recharge
A 120-minute charge time gets your battery back to full power quickly reducing interruptions in your workflow.
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4. 4.0Ah High Capacity – Strong Runner-Up Greenworks 40V Battery Replacement
4.0Ah High Capacity Battery Replacement for 40v Greenworks
160Wh wattage
Includes charger unit
LED charging status
Intelligent protection
This battery and charger combo offers a complete solution for users needing both replacement power and a reliable charging station. Rated 4.2 it features a 160Wh wattage capacity designed to extend runtime on various Greenworks 40V tools effectively.
Pros
- Complete combo kit
- LED status tracking
- High capacity cells
- Multi-layer safety
- 24/7 support
Cons
- Mixed reviews on charger
- Third-party manufacturer
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The built-in LED indicator shows charging status in real time helping you monitor progress without guessing. Intelligent protection systems guard against over-charging and over-discharging ensuring the battery remains safe during daily use.
While it includes a charger that adds value the third-party nature means quality can vary slightly compared to OEM parts. However the comprehensive support and high capacity make it a strong contender for budget buyers.
Ideal for those replacing an old broken charger as well as the battery this set provides immediate readiness for your tools. It balances cost and functionality well for general yard work tasks requiring consistent power.
Combo Convenience
Including both battery and charger saves time and ensures your tools are ready to use right out of the box.
Real-Time Monitoring
The LED indicator allows you to track charging status easily preventing overuse and extending battery health.
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5. 1 Pack 29472 6000mAh – High Capacity Greenworks 40V Battery Replacement
1 Pack 29472 Battery Replacement for Greenworks 40V 6000mAh
6.0Ah capacity
4-level LED indicator
Heat release holes
Snap-in design
This 6000mAh replacement battery offers significant runtime advantages over standard 4000mAh units for larger yards or extended work. With a strong 4.5 rating it fits second-generation Greenworks tools and includes 4-level LED indicators to monitor charge levels accurately.
Pros
- High 6000mAh capacity
- Precise fit
- Multiple safety protections
- Easy removal
- Good value
Cons
- No charger included
- Gen 2 specific
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Surrounding heat release holes accelerate cooling which is crucial during heavy-duty use to maintain performance. The snap-in design makes installation and removal effortless while the safety protections prevent common electrical failures.
While it does not include a charger it is an excellent standalone upgrade for existing users who just need more power. The high capacity ensures you complete more tasks before needing to recharge your equipment.
Best for users with large properties or those who use their tools for long sessions this battery delivers extended operation. It is a solid high-capacity choice that balances performance with practical safety features.
Extended Capacity
The 6.0Ah rating provides substantially longer runtime compared to standard batteries for extensive lawn maintenance.
Thermal Management
Heat release holes keep the battery cool preventing overheating during continuous heavy use of power tools.
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6. 2Pack 40V 4.0Ah – Best Multi-Pack Greenworks 40V Battery Replacement
2Pack 40V 4.0Ah Battery Replacement for Greenworks
Two batteries included
Dual-port charger
4 LED indicators
Gen 2 compatible
This two-pack set offers the ultimate convenience for professionals or heavy users who cannot afford downtime while recharging. It includes two 4.0Ah batteries and a dual-port charger allowing you to charge one battery while using the other continuously.
Pros
- Two batteries in pack
- Dual-port charger
- Continuous operation
- Safety protections
- High-quality cells
Cons
- Higher upfront cost
- No charger for Gen 1
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Each battery features 4 LED indicators for precise power monitoring and high-quality cells to ensure no memory effects. The dual-port charger speeds up your workflow significantly making it ideal for large properties or commercial landscaping needs.
Although the initial investment is higher the ability to swap batteries instantly saves considerable time over the long run. It is designed for second-generation tools ensuring a reliable fit and stable power output during tasks.
Perfect for contractors or homeowners with large lawns this set provides continuous operation capabilities without waiting. It is the practical choice for anyone needing maximum uptime and efficient battery management.
Continuous Operation
Two batteries allow you to swap power sources instantly keeping your work moving without charging interruptions.
Dual-Port Charging
The included dual-port charger speeds up the charging process enabling faster turnaround between tasks.
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7. 1Pack 6.0Ah 40V – Durable Build Greenworks 40V Battery Replacement
1Pack 6.0Ah 40V Battery Replacement for Greenworks 29462
240Wh wattage
Composite housing
Quick-release button
CE RoHS certified
This 6.0Ah replacement provides substantial power with 240Wh wattage designed to handle tough cutting and trimming tasks efficiently. It features a durable composite housing and quick-release button for easy handling and secure attachment to your Greenworks tools.
Pros
- High wattage power
- Durable composite housing
- Precise fit
- Quick-release feature
- Exchange service
Cons
- Standard safety rating
- Third-party warranty
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The precision design ensures a perfect fit with original chargers and tools minimizing any risk of connection issues. Microchip protection prevents overheating and overcharging extending the overall service life of the battery unit.
While the rating is slightly lower than OEM options the high capacity and durable build offer strong value for cost-conscious buyers. Exchange services are available providing a safety net in case of early defects.
Ideal for users who need rugged performance for demanding garden chores this battery delivers consistent power throughout its cycle. It is a robust choice for those prioritizing durability and high capacity on a budget.
Durable Construction
The high-strength composite housing resists damage during rough handling ensuring longevity in various outdoor conditions.
Power Output
With 240Wh wattage this battery provides strong performance for high-draw tools like chainsaws and mowers.
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8. 6.5Ah Battery and Charger – Highest Capacity Greenworks 40V Battery Replacement
6.5Ah 40V Battery and Charger Compatible with Greenworks
6500mAh capacity
USB port included
2.0 AMP charger
ECP chip
Standing out with a perfect 5.0 rating this 6.5Ah battery delivers the highest capacity in its class for extended runtime. It includes a rapid 2.0 AMP charger and features a built-in USB port for charging personal devices on the job site.
Pros
- Highest capacity option
- USB charging port
- Excellent user rating
- ECP protection
- Rapid charger
Cons
- Limited availability
- Price premium
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The ECP chip prevents overcharge and overdischarge to extend lifespan significantly. It is designed for G-MAX tools (not Gen 1) ensuring compatibility and stable power output for heavy tools like mowers.
Users appreciate the extra USB port which adds utility beyond just powering garden tools. The 260Wh capacity ensures you can work longer before needing to recharge making it a top-tier option.
Best for users wanting maximum battery life without buying multiple batteries this set combines high capacity with useful features. It is the premium third-party choice for those who need reliable and extended outdoor power.
Maximum Runtime
The 6.5Ah capacity offers extended runtimes reducing the frequency of charging interruptions during work.
Utility Features
The integrated USB port allows you to charge phones or GPS units directly from the battery while working.
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9. 2 Pack 40V 6000mAh – Cost Effective Greenworks 40V Battery Replacement
2 Pack 40V 6000mAh Replacement for Greenworks 40V
Two batteries included
6000mAh each
4 LED indicators
Black finish
This two-pack set provides two 6000mAh batteries for a cost-effective solution to power multiple tools or maintain continuous operation. With a 4.4 rating the high capacity ensures more runtime than standard 4000mAh units across your garden equipment.
Pros
- Two high-capacity batteries
- Cost per battery
- Powerful output
- Status monitoring
- Stable protection
Cons
- No charger included
- Third-party quality
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Both batteries feature 4 LED indicators to display remaining run time helping to minimize interruptions. The stable protective system prevents over-charge and short-circuit ensuring safe performance during prolonged use sessions.
It is designed strictly for second-generation tools so verify compatibility before purchasing to ensure a proper fit. The black finish matches many modern tools offering a sleek look while you work.
Best for users needing high power on a budget this pack offers excellent value per unit. It is a practical choice for anyone looking to stock up on reliable and high-capacity battery power.
Value Pack
Buying two batteries at once often provides better savings than purchasing single units separately.
Status Monitoring
The LED indicators help you track remaining power so you never get stuck mid-task unexpectedly.
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10. TREE.NB 6.0Ah 29472 – Compatible Alternative Greenworks 40V Battery Replacement
TREE.NB 6.0Ah 40V 29472 Lithium Battery
Fuel gauge included
Exothermic holes
Built-in microchip
Second-gen only
This TREE.NB 6.0Ah replacement offers a precise interface design with an on-board fuel gauge for accurate power monitoring. With a 4.0 rating it is compatible with a wide list of Greenworks 40V G-MAX models ensuring broad usability.
Pros
- Fuel gauge feature
- Fast cooling
- Microchip protection
- Precise fit
- Wide model list
Cons
- Lower rating
- Specific charger model
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Surrounding exothermic holes speed up battery cooling to maintain performance during heavy use. The built-in microchip prevents overcharging and short circuits while the 4 LED lights help you control work time wisely.
It fits second-generation tools exclusively so check your charger model before buying. The high capacity allows for longer runtimes which benefits users with larger properties or intensive gardening needs.
Ideal for those looking for a specific 29472 compatible alternative this battery balances capacity with useful features like the fuel gauge. It is a solid alternative for general yard maintenance tasks.
Fuel Gauge Accuracy
The integrated fuel gauge gives precise power readings helping you plan tasks more effectively.
Cooling Design
Exothermic holes allow heat to escape quickly preventing overheating during continuous operation.
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Buying Guide – How to Choose the Best Greenworks 40V Battery Replacement
Selecting the right battery replacement involves understanding your tool generation and power requirements.
Tool Generation Compatibility
Greenworks 40V tools come in first and second generations with distinct battery shapes and connectors. Third-party replacements often specify whether they fit Gen 1 or Gen 2 models so check your specific tool number before buying.
Always verify compatibility with your current charger and tools to ensure a secure fit and proper charging.
Capacity and Amp Hours
Battery capacity measured in amp-hours (Ah) determines how long your tool will run on a single charge. Higher capacity batteries like 6.0Ah provide longer runtime but may be slightly heavier than 4.0Ah options.
Choose a capacity that matches your workload with larger yards benefiting from extended amp-hour ratings.
Safety Certifications
Look for third-party batteries that carry certifications like UL FCC or ROHS which indicate adherence to safety standards. These certifications ensure the battery has built-in protection against overheating short circuits and overcharging.
Prioritize certified batteries to protect both your expensive power tools and your personal safety during operation.
Charge Time and Charger Included
Some replacement kits include a charger which can be cost-effective if your original charger is broken. Standard 40V batteries take roughly 120 minutes to charge so consider how quickly you need to get back to work.
If you have multiple batteries look for options that support dual-port charging to minimize downtime effectively.
LED Indicators and Features
Many modern replacements come with LED fuel indicators that show remaining power at a glance. Features like USB ports allow you to charge devices on the go adding convenience for outdoor projects.
Consider which features enhance your workflow such as precise power monitoring or extra charging utility.
Warranty and Support
Reputable third-party sellers often offer warranties ranging from 12 months to one year on replacement batteries. Check the seller policy regarding exchanges or refunds in case you receive a defective unit.
A solid warranty provides peace of mind that you can get a replacement if issues arise shortly after purchase.
OEM vs. Third-Party Options
Genuine OEM batteries offer guaranteed quality and fit but typically cost more than third-party alternatives. Third-party brands often provide higher capacities and better value for budget-conscious users willing to verify safety.
Decide whether priority lies with brand reputation or maximizing capacity and savings for your specific needs.
Heat Management Features
High-performance batteries should include heat dissipation designs such as ventilation holes to prevent overheating. Overheating can reduce battery life and damage your tools so look for models designed with thermal protection in mind.
Efficient cooling ensures the battery maintains optimal temperatures during heavy-duty use for consistent performance.
How to Use and Care for Your Greenworks 40V Battery Replacement
Before using a new battery replacement fully charge it for at least two hours to ensure all internal cells are activated. This initial charge helps calibrate the battery management system and provides optimal power delivery for your tools.
Store your batteries in a cool dry place away from direct sunlight and extreme temperatures to prolong their lifespan. Avoid leaving batteries inside hot vehicles during summer months as heat can degrade the internal chemistry over time.
If you use your tools frequently rotate between multiple batteries to allow each one to cool down between uses. This practice prevents overheating and ensures that your equipment is always ready for immediate use when needed.
Frequently Asked Questions
Are third-party Greenworks 40V batteries safe to use?
Yes third-party batteries are safe if they carry recognized safety certifications like UL FCC or ROHS. These certifications ensure the battery includes protection against overcharging overheating and short circuits. Always check reviews and seller reputation before purchasing.
Will a Gen 2 battery fit a Gen 1 Greenworks tool?
No Gen 2 batteries generally do not fit Gen 1 tools due to different connector shapes and internal electronics. Always verify your tool model number and generation before buying a replacement battery to ensure proper fit and function.
How long does a replacement battery typically last?
Most quality replacement batteries last between one to three years depending on usage and care. Proper storage avoiding deep discharges and keeping contacts clean can help extend the usable life of your battery significantly.
Can I use my original charger with a third-party battery?
In most cases yes but some chargers may detect third-party batteries as incompatible. Check the product description to ensure your charger model is listed as compatible before purchasing the replacement battery.
What does the LED indicator show on the battery?
The LED indicator typically displays the remaining charge level or current charging status. Pressing the button on the battery usually activates the lights to show how much power is available for your next task.
Do replacement batteries have the same warranty as OEM?
Third-party batteries often come with shorter warranties usually around 12 months compared to OEM. Always check the specific seller warranty policy to understand your options for exchanges or refunds if issues occur.
Final Thoughts on Choosing the Best Greenworks 40V Battery Replacement
We have reviewed ten top options ranging from genuine Greenworks units to high-capacity third-party replacements to suit various needs. Whether you need maximum runtime or budget-friendly value there is a battery on this list to meet your yard work demands.
Prioritize compatibility with your specific tool generation and look for safety certifications to ensure reliable and safe performance. Investing in a quality battery now can save time and frustration during critical maintenance tasks throughout the season.
Remember to check current availability and product details as inventory changes frequently on online marketplaces. Select the battery that offers the best balance of power and price for your specific gardening or landscaping routine.