Upgraded Replacement for Greenworks 40V 4.0Ah
4.3Editor score
Triple certified safety protection
Extended long runtime
Precision interface design
In this guide
Finding the right Greenworks 40V battery replacement is crucial for maintaining your cordless tools performance. Whether you need extended runtime or a budget-friendly option, the right battery ensures your lawn mower or trimmer runs smoothly without unexpected downtime during critical yard work sessions.
We evaluated ten top-rated replacements based on compatibility, capacity, safety features, and user feedback. Our comparison focuses on genuine OEM options and reliable third-party alternatives that meet industry safety standards while delivering consistent power across various Greenworks 40V G-MAX tools.
Each pick highlights specific strengths like fade-free power, LED indicators, and warranty coverage. Prices and availability change frequently, so check current listings before purchasing to ensure you get the best value for your specific tool model and power requirements today.
Top 3 Picks for Best Greenworks 40V Battery Replacement
Greenworks 40V 4.0Ah Lithium-Ion Battery
4.5Editor score
Fade-free power delivery
Integrated LED fuel indicator
Compatible with 75+ tools
1 Pack 29472 Battery Replacement 6000mAh
4.5Editor score
6.0Ah high capacity
4-level LED charge indicator
Multi-protection safety system
Top 10 Best Greenworks 40V Battery Replacement in 2026 Compared
This side-by-side comparison details the key specifications and features of all ten selected Greenworks 40V battery replacements to help you make an informed decision based on your specific tool compatibility and power needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Greenworks 40V 4.0Ah Lithium-Ion Battery
40V 4.0Ah capacity
Fade-free power output
Integrated LED indicator
75+ tool compatible
4.5Editor score
Editor's Choice
Upgraded Replacement for Greenworks 40V 4.0Ah
40V 4.0Ah capacity
UL FCC ROHS certified
6-fold safety protection
Gen 2 tools only
4.3Editor score
Best Premium
4.0Ah High Capacity Battery Replacement
40V 4000mAh capacity
Charger included combo
LED charging status
Intelligent protection system
4.2Editor score
1 Pack 29472 Battery Replacement 6000mAh
40V 6.0Ah capacity
4-level LED indicator
Heat release holes
Multiple safety protections
4.5Editor score
2Pack 40V 4.0Ah Battery Replacement
40V 4.0Ah capacity
Dual-port charger included
4 LED indicators
12 months warranty
4.3Editor score
1Pack 6.0Ah 40V Battery Replacement
40V 6000mAh capacity
4 LED indicator lights
CE RoHS FCC certified
24-hour support
4.1Editor score
6.5Ah 40V Battery and Charger
40V 6500mAh capacity
USB charging port
ECP chip protection
Rapid charger included
5.0Editor score
2 Pack 40V 6000mAh Replacement
40V 6000mAh capacity
4 LED indicators
Stable protective system
Gen 2 tools only
4.4Editor score
TREE.NB 6.0Ah 40V 29472 Lithium Battery
40V 6000mAh capacity
On-board fuel gauge
Exothermic cooling holes
Microchip protection
4.0Editor score
Greenworks 40V 4.0Ah USB Lithium-Ion Battery
40V 4.0Ah capacity
USB charging port
120 min charge time
10 tool system
4.4Editor score
1. Greenworks 40V 4.0Ah – Best Overall Battery Replacement
Greenworks 40V 4.0Ah Lithium-Ion Battery
40V 4.0Ah capacity
Fade-free power delivery
Integrated LED fuel indicator
75+ tool compatible
This genuine Greenworks battery ranks first for its reliable fade-free power delivery and broad tool compatibility. With a 4.5 rating from thousands of users, it stands out as the safest bet for maintaining original tool performance without worrying about third-party compatibility issues or unexpected power drops.
Pros
- Genuine OEM quality assurance
- Fade-free power throughout use
- Wide tool compatibility across 75+ models
- Built-in battery management system
- Immediate state feedback via LED
Cons
- Higher price than third-party options
- May not fit all Gen 1 tools
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The integrated LED fuel indicator provides immediate feedback on battery state, eliminating guesswork during yard work. Its built-in battery management system protects against overheat, short circuit, and overcharge conditions ensuring the battery and your tools remain safe during heavy-duty extended use sessions.
While the price point is higher than generic replacements, the peace of mind from genuine OEM quality justifies the investment. The memoryless lithium-ion technology ensures consistent power output even after partial charges making it ideal for users who need reliable runtime across multiple tools without frequent charging stops.
Anyone investing in a Greenworks 40V ecosystem should start with this battery for maximum compatibility and safety. It pairs seamlessly with the G-MAX system allowing you to power over 75 different tools from a single battery source which simplifies your workshop or garage setup significantly.
Fade-Free Power Technology
The G-MAX 40V system delivers consistent power without voltage drop ensuring your tools perform at peak efficiency from start to finish.
Universal Compatibility
Compatible with 75+ Greenworks tools in the same voltage class providing total freedom of movement without tangled cables or multiple battery types.
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2. Upgraded Replacement – Best Budget Option
Upgraded Replacement for Greenworks 40V 4.0Ah
40V 4000mAh capacity
Triple certified safety
Precision interface design
Gen 2 tools only
This third-party replacement offers excellent value with a 4.3 rating and comprehensive safety certifications. It is a solid choice for users on a budget who need reliable power for their second-generation 40V tools without paying premium prices for genuine OEM parts.
Pros
- Affordable price point
- UL FCC and ROHS certified
- Extended runtime performance
- Efficient heat dissipation design
- Responsive customer service
Cons
- Not compatible with Gen 1 tools
- Build quality may vary
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Certified by UL FCC and ROHS this battery features six-fold safety protection including overcharge and overheat safeguards. The precision interface ensures steady power output while efficient heat dissipation maintains optimal temperature prolonging both battery and tool lifespan during heavy outdoor usage.
While it fits only second-generation tools the extended runtime and consistent power output make it a strong performer. The integrated LED indicator clearly shows remaining battery level helping you plan your work efficiently without unexpected interruptions during critical yard maintenance tasks.
Homeowners looking for a cost-effective alternative to original batteries will appreciate this option. With a twelve-month quality assurance period and friendly twenty-four-hour customer service support you have reliable backup if any issues arise after purchase or during normal use cycles.
Triple Safety Certification
UL FCC and ROHS certifications ensure the battery meets strict international safety standards for consumer electronic devices and power tools.
Precision Interface Design
The precision engineered interface ensures steady power output and safe power supply for tools while preventing connection issues during use.
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3. 1 Pack 29472 Battery Replacement – Best Premium Capacity
1 Pack 29472 Battery Replacement 6000mAh
40V 6.0Ah capacity
4-level LED indicator
Heat release holes
Multiple safety protections
This 6.0Ah replacement stands out with high capacity for extended runtime across your lawn equipment. With a 4.5 rating it delivers consistent power and features a 4-level LED indicator so you can monitor battery usage without stopping your work abruptly mid-task.
Pros
- High 6.0Ah capacity for longer runtime
- 4-level LED charge indicator
- Comprehensive safety protection system
- Quick-release button design
- Compatible with multiple tool models
Cons
- Slightly heavier due to higher capacity
- Higher price than standard 4Ah options
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The surrounding heat release holes accelerate battery cooling ensuring safe operation during extended use. Its multiple safety protections including short-circuit and over-temperature safeguards make it reliable for heavy-duty applications like mowing large lawns without overheating concerns.
While the higher capacity adds some weight it provides significantly longer operation time compared to standard 4Ah batteries. The quick-release button design ensures easy installation and removal from your tools making it convenient to swap between multiple devices during large yard projects.
Users needing maximum runtime per charge will benefit most from this model. It fits a wide range of Greenworks 40V cordless power tools making it versatile for homeowners who own several different types of lawn and garden equipment requiring consistent power delivery.
Extended Runtime Performance
The 6000mAh capacity provides significantly longer run time than standard batteries ensuring you complete larger projects on a single charge.
Heat Management System
Surrounding heat release holes accelerate battery cooling to maintain optimal performance and safety during heavy-duty usage.
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4. 4.0Ah High Capacity – Best Battery and Charger Combo
4.0Ah High Capacity Battery Replacement
40V 4000mAh capacity
Charger included combo
LED charging status
Intelligent protection system
This combo offers a complete power solution with both battery and charger included for convenience. It features intelligent protection against over-charging and over-discharging while its multi-layer safety system ensures stable charging process to extend battery service life significantly over time.
Pros
- Battery and charger combo included
- LED charging status indicator
- High quality battery cells
- Multi-layer safety protection
- 24/7 online support
Cons
- Charger compatibility may vary
- Rating slightly lower than OEM
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The built-in LED indicator shows charging status in real time helping you track progress easily. Made from highest quality battery cells with no memory effect this replacement provides consistent performance across compatible Greenworks 40V power tools without losing power capacity over multiple charge cycles.
While the charger is included ensure compatibility with your specific tool models before purchase. The factory tests confirm strict compliance with industry safety standards giving you confidence in product quality without needing to source a separate charging unit separately for your setup.
Users needing both a replacement battery and charger at once will find this a practical choice. The 24/7 online support ensures you can quickly resolve any questions about compatibility charging or performance ensuring minimal downtime for your yard work projects throughout the season.
Complete Power Solution
Battery and charger combo includes everything needed to get started immediately without sourcing separate components for your tool system.
Intelligent Protection
Protection against potential damage caused by over-charging over-discharging over-voltage over-current and short-circuit ensures safe operation.
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5. 2Pack 40V 4.0Ah – Best Two-Pack Bundle
2Pack 40V 4.0Ah Battery Replacement
40V 4.0Ah capacity
Dual-port charger included
4 LED indicators
12 months warranty
This two-pack allows you to swap batteries without waiting for charges ensuring uninterrupted yard work. The dual-port charger charges both batteries efficiently while each battery features 4 LED indicators displaying remaining power at the touch of a button to help plan work wisely.
Pros
- Two batteries provide continuous work
- Dual-port charger for fast charging
- 4 LED indicators per battery
- Wide tool compatibility
- 12 months quality assurance
Cons
- Higher initial investment
- Gen 2 tools only compatibility
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Compatible with a wide range of Greenworks 40V G-MAX power tools it offers versatility for multiple equipment types. The intelligent protection system guards against over-charging and over-discharging ensuring safe operation throughout the battery life for extended use periods.
While the initial cost is higher having two batteries means you can work continuously without downtime. The 4 LED indicators help track remaining power so you can switch batteries proactively before power depletion causes interruptions during large landscaping or maintenance projects.
Professionals or homeowners with extensive tool collections benefit most from this bundle. With 12 months of quality problem solving time and friendly customer service you have peace of mind that your power source is supported for ongoing yard work needs throughout the year.
Continuous Work Capability
Two batteries enable continuous work without waiting for charges by allowing seamless swapping between tasks.
Dual-Port Charging
The dual-port charger allows efficient simultaneous charging of both batteries reducing overall downtime between usage sessions.
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6. 1Pack 6.0Ah – High Capacity Value
1Pack 6.0Ah 40V Battery Replacement
40V 6000mAh capacity
4 LED indicator lights
CE RoHS FCC certified
24-hour support
This replacement offers high 6.0Ah capacity for extended runtime across your Greenworks tools. With a 4.1 rating it provides consistent power while featuring 4 LED indicator lights allowing users to monitor remaining battery power and minimize risk of work interruptions during tasks.
Pros
- High 6.0Ah capacity
- 4 LED indicator lights
- CE RoHS FCC certified
- 1-year product exchange
- High-strength composite housing
Cons
- Lower rating than OEM
- Slightly heavier than 4Ah
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CE RoHS and FCC certified for security this battery includes built-in microchip protection preventing overheat and overcharge conditions. The high-strength composite materials provide exceptional durability and strong resistance to damage making it reliable for rough outdoor conditions.
While the rating is slightly lower than genuine OEM options it provides significant runtime value for the price. The quick-release button ensures easy installation and removal from tools while high-precision molds guarantee a perfect fit with original chargers and tool connectors.
Users needing long runtime on a budget will appreciate this option. With one-year product exchange services and 24-hour online technical support you have reliable customer assistance if any quality or compatibility issues arise during regular yard maintenance use cycles.
Durability Features
Housing constructed from high-strength composite materials offering exceptional durability and strong resistance to physical damage.
Security Certification
CE RoHS and FCC certified ensuring compliance with international safety and security testing standards for consumer electronics.
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7. 6.5Ah 40V Battery and Charger – Unique USB Feature
6.5Ah 40V Battery and Charger
40V 6500mAh capacity
USB charging port
ECP chip protection
Rapid charger included
This unique option combines high capacity with a built-in USB port allowing device charging during outdoor work. With a perfect 5.0 rating it delivers extended run time and features an ECP chip preventing overcharge and overdischarge to extend battery lifespan significantly.
Pros
- High 6.5Ah capacity
- Built-in USB port for devices
- ECP chip protection
- Rapid 2.0AMP charger
- Perfect 5.0 rating
Cons
- Higher price point
- Gen 1 incompatibility
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The included rapid charger provides 2.0AMP output charging batteries efficiently with LED gauge showing charging status. Compatible with Greenworks 40V 29472 29462 batteries and G-MAX tools it ensures seamless integration with existing equipment while meeting strict security testing standards.
While the price is higher the USB port offers unique convenience for charging phones or tablets while working. The 6.5Ah capacity provides significantly more runtime than standard 4Ah models ensuring you complete large tasks without needing frequent battery swaps mid-project.
Tech-savvy users wanting to charge devices while working will love the USB port. With 45-day money-back and 12 months quality assurance you can try this confidently knowing you have reliable customer service available for 24-hour prompt support if needed.
USB Charging Port
Built-in USB port lets you charge phones or tablets during outdoor work without needing separate power sources.
Rapid Charger
Included 2.0AMP rapid charger efficiently charges 40V G-MAX batteries with LED gauge showing real-time status.
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8. 2 Pack 40V 6000mAh – Continuous Power Duo
2 Pack 40V 6000mAh Replacement
40V 6000mAh capacity
4 LED indicators
Stable protective system
Gen 2 tools only
This two-pack provides continuous power with two 6000mAh batteries ensuring uninterrupted work sessions. With a 4.4 rating it features 4 LED indicators to monitor power and display remaining run time reducing risk of downtime during critical lawn maintenance tasks.
Pros
- Two batteries for continuous power
- 6000mAh capacity triples runtime
- 4 LED indicators for monitoring
- Stable protective system
- High build quality
Cons
- Only fits Gen 2 tools
- Higher cost than single
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The capacity more than triples the run time of original standard 4Ah batteries offering substantial productivity gains. High quality cells and stable protective system prevent over-charge and over-heat issues ensuring the batteries remain reliable through multiple charge cycles and usage periods.
While it only fits second-generation tools the high capacity makes it ideal for large properties. Having two batteries allows you to swap and work continuously without waiting for charging which is crucial for large yards or commercial applications where time matters.
Users needing maximum uptime will find this bundle practical. The black design offers a professional look while the reliable performance ensures your tools stay operational throughout the day without unexpected power loss during important outdoor projects.
Triple Runtime Capacity
6000mAh capacity provides more than triple the run time of original standard batteries significantly extending usage time.
Work Continuity
Two batteries enable swapping without waiting for charging ensuring continuous operation during large projects.
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9. TREE.NB 6.0Ah – High Capacity Alternative
TREE.NB 6.0Ah 40V 29472 Lithium Battery
40V 6000mAh capacity
On-board fuel gauge
Exothermic cooling holes
Microchip protection
This replacement offers high 6.0Ah capacity for extended runtime across Greenworks G-MAX tools. It features an on-board fuel gauge with integrated LED indicator allowing users to monitor battery usage easily while surrounding exothermic holes speed up battery cooling for optimal performance.
Pros
- High 6.0Ah capacity
- On-board fuel gauge
- Exothermic cooling holes
- Built-in microchip protection
- Wide tool compatibility
Cons
- Not compatible with MO40L02 model
- Rating lower than top picks
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Built-in integrated microchip prevents overcharging self-discharge and current issues extending battery life. With high capacity it works much more time for your 40V tools than standard models providing better value for users requiring longer operation periods for daily maintenance.
While not compatible with all models like the MO40L02 it covers most other Greenworks 40V power tools. The precise interface design ensures easy installation and removal from tools while the 4 LED indicator lights help control your time more wisely during tasks.
Users needing extra runtime will find this practical value. The microchip protection ensures safety during long sessions while the precise interface design ensures steady power out for reliable performance during heavy-duty yard work throughout the season.
Fuel Gauge Technology
On-board fuel gauge with LED indicator allows precise monitoring of remaining battery power and usage status.
Microchip Safety
Built-in integrated microchip prevents overcharging and short circuit protection extending battery life and safety.
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10. Greenworks 40V 4.0Ah USB – Premium OEM with USB
Greenworks 40V 4.0Ah USB Lithium-Ion Battery
40V 4.0Ah capacity
USB charging port
120 min charge time
10 tool system
This genuine OEM option features a unique USB port for device charging while maintaining fade-free power delivery. With a 4.4 rating it delivers consistent performance across the G-MAX system and offers quick charge time of 120 minutes for minimal downtime during yard work.
Pros
- Genuine OEM quality
- USB charging port for devices
- Quick 120 minute charge time
- Compatible with 75+ tools
- Fade-free power delivery
Cons
- Highest price in category
- Limited to specific charger models
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The USB charging port lets you charge phones or tablets while working without separate power sources. Compatible with G-MAX 40V tools and charger models BAF704 29482 it ensures seamless integration and reliable power for your lawn care equipment throughout seasonal projects.
While it is the most expensive option the USB port adds unique convenience and genuine OEM quality ensures longevity. The quick charge time means less waiting between tasks while fade-free power ensures your tools operate at peak performance from start to finish.
Tech-savvy homeowners wanting maximum convenience will appreciate this premium choice. It offers a complete yard work solution with one battery for multiple tools ensuring you stay connected and powered throughout your outdoor workday.
USB Port Feature
USB charging Port allows charging mobile devices during outdoor work without needing additional adapters or power sources.
Quick Charge Technology
Quick charge time of 120 minutes reduces downtime allowing you to return to work faster after charging.
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Buying Guide – How to Choose the Best Greenworks 40V Battery Replacement
Selecting the right battery replacement requires understanding compatibility capacity safety and warranty details to ensure your tools perform reliably.
Tool Compatibility
Verify the battery matches your tool generation Gen 1 vs Gen 2 as compatibility varies significantly. Check model numbers like 29472 or 29462 to ensure fit before purchasing.
Always check tool generation compatibility before buying.
Battery Capacity
Higher capacity measured in Ah or mAh provides longer runtime. For large yards consider 6.0Ah options while 4.0Ah suits smaller spaces with shorter tasks.
Choose capacity based on project size.
Safety Certifications
Look for UL FCC and ROHS certifications ensuring the battery meets safety standards. These prevent overheating and overcharge risks during heavy use.
Prioritize certified safe batteries.
Warranty Support
Quality replacements come with 12-month warranties. Ensure customer service is available via email or phone to resolve compatibility issues quickly.
Check warranty terms before purchase.
Charger Inclusion
Some combos include chargers which can save money. Verify charger compatibility with your tools to ensure seamless charging cycles.
Confirm charger compatibility.
LED Indicators
Batteries with LED indicators show remaining power helping you avoid mid-task depletion. This feature aids in planning work sessions efficiently.
LED indicators improve planning.
OEM vs Third-Party
OEM batteries offer guaranteed quality but cost more. Third-party options provide budget alternatives with similar performance if safety certified.
Compare OEM and third-party options.
Special Features
Some batteries include USB ports for device charging. Consider if this added convenience justifies the higher price point for your needs.
Evaluate special features carefully.
How to Use and Care for Your Greenworks 40V Battery Replacement
Install the battery by aligning the contacts and snapping it firmly into place on your tool. Ensure it clicks securely before starting operation to prevent connection issues.
Charge the battery using the recommended charger and monitor LED indicators for status. Avoid leaving it plugged in after full charge to maintain battery longevity.
Store batteries in a cool dry place away from direct sunlight or extreme temperatures. This prevents degradation and ensures consistent performance over time.
Frequently Asked Questions
Are all Greenworks 40V batteries compatible with every tool?
No compatibility depends on tool generation. Gen 1 tools use different connectors than Gen 2 models. Always check your tool model number and verify it fits the battery specification before purchase to ensure proper fit.
Do third-party replacements void tool warranties?
Using third-party batteries typically voids warranties for the tool itself. OEM batteries maintain full warranty coverage. Check your tool's terms before switching to avoid potential repair coverage issues.
How long does a 6.0Ah battery last compared to 4.0Ah?
A 6.0Ah battery offers roughly 50 percent longer runtime than 4.0Ah models. This translates to extended mowing or trimming time per charge making it ideal for larger properties.
Can I use a battery from a mower on a trimmer?
Yes if both tools are in the same 40V G-MAX series. The battery system is designed for cross-compatibility across different tool types within the same voltage class.
What should I do if the LED lights are not working?
Ensure the battery is charged and contacts are clean. If issues persist after a full charge the battery may be defective. Contact customer service under warranty terms for support.
Is it safe to leave the battery on the charger overnight?
Modern batteries have overcharge protection but leaving them for extended periods may reduce lifespan. Remove the battery once charging is complete for optimal performance over time.
What is the typical lifespan of a replacement battery?
Replacement batteries typically last two to three years with regular use. Proper storage and avoiding extreme temperatures extend service life significantly beyond standard expectations.
Do these batteries work with original Greenworks chargers?
Most third-party replacements work with original chargers but verify before purchase. Some combos include chargers that match your existing tool requirements for seamless charging.
Final Thoughts on Choosing the Best Greenworks 40V Battery Replacement
Choosing the right replacement depends on your budget and tool requirements. Genuine OEM options provide safety while third-party offers value with solid performance.
Prioritize safety certifications and compatibility to ensure long-term reliability. Higher capacity batteries suit larger properties while 4Ah models work well for small tasks.
Always verify current pricing and availability before purchase as stock fluctuates. Use the provided links to compare offers and find the best fit for your yard maintenance needs.