9 Best Greenworks Lawn Mower Battery Replacement (November 2026)

The best Greenworks lawn mower battery replacements include the MAFACBAC 29472 for Greenworks 40V Battery for broad 40V compatibility, the Vpment 60V 5.0Ah Replacement for Greenworks 60V for 60V heavy yard work, and the MAFACBAC 24V Battery Replacement for Greenworks for 24V mower owners.

On this page (7 sections)

1. Which Greenworks lawn mower battery replacement is best?
2. How we ranked the Greenworks lawn mower batteries
3. The best Greenworks lawn mower battery replacement picks
4. What should you check before buying a Greenworks replacement battery?
5. Does higher capacity mean longer mower runtime?
6. How should you store and charge a Greenworks lawn mower battery?
7. Verdict: which greenworks lawn mower battery should you buy?

The best Greenworks lawn mower battery replacement for most 40V owners is the MAFACBAC 29472, with 6.0Ah capacity and broad G-MAX compatibility. Choose by your mower's voltage platform first, then compare capacity, pack count and model numbers.

We compared the listed voltage, amp-hour capacity, pack count, compatibility notes and practical battery features. The right greenworks lawn mower replacement battery is the one that matches your mower and charger without crossing into another voltage family.

For a wider look at battery chemistry and capacity, see our guide to the best lawn mower battery lithium. If your mower uses another brand's battery system, compare the best ego lawn mower battery replacement and our guide to the best dewalt lawn mower battery.

Our picks at a glance

1. 1
   Best for broad 40V compatibility

   MAFACBAC 29472 for Greenworks 40V Battery

   9.7/10 our score

   See it on Amazon
2. 2
   Best for 60V heavy yard work

   Vpment 60V 5.0Ah Replacement for Greenworks 60V

   9.6/10 our score

   See it on Amazon
3. 3
   Best for 24V mower owners

   MAFACBAC 24V Battery Replacement for Greenworks

   9.4/10 our score

   See it on Amazon

4. 4

   OHYES BAT 2Pack 6.0Ah Replacement for Greenworks 40V

   Best for two-pack 40V coverage
   Check it
5. 5

   OHYES BAT 1 Pack 6000mAh 29472 Lithium ion

   Best for second-generation 40V tools
   Check it
6. 6

   Bslite 1 Pack 80V 3.0Ah Battery Replacement

   Best for Greenworks 80V platforms
   Check it
7. 7

   COMRGIKE 2 Packs 4000mAh Battery Replacement

   Best for two 40V backup batteries
   Check it
8. 8

   XAVITO Replacement for Greenworks 60V Battery 5.0Ah

   Best for extended 60V protection
   Check it
9. 9

   Fhybat 2 Packs 29472 Battery Replacement

   Best for two 40V 6Ah packs
   Check it

Which Greenworks lawn mower battery replacement is best?

The MAFACBAC 29472 is the top overall pick because it combines a 40V platform, 6.0Ah capacity and a long list of Greenworks G-MAX model matches. That mix suits many 40V mower owners who need one replacement pack with room for a full yard session.

The Vpment 60V battery is the stronger choice for Greenworks 60V owners who run mowers, blowers or trimmers on that higher voltage system. The MAFACBAC 24V pack is the best fit for a 24V mower, and it should not be treated as an option for 40V, 60V or 80V tools.

The Bslite 80V pack fills the top end of the guide for Greenworks PRO 80V equipment. Its place here depends on matching the 80V platform first, not on comparing its 3.0Ah rating with larger amp-hour numbers from lower voltage packs.

Our score weighs specs, features and buyer feedback against what you are shopping for. It does not replace the compatibility check on your mower, old battery or charger.

Voltage should guide the first cut because each family in this guide is separate. Capacity, pack count and model coverage only help after the platform and fit are confirmed.

A two-pack can make sense when you want a spare ready while another battery charges. A single pack is simpler when one battery has reached the end of its useful life and you can wait during charging.

How we ranked the Greenworks lawn mower batteries

We put voltage compatibility first because a battery from the wrong platform cannot serve as a safe substitute. For a model-specific Cub Cadet fit, see Cub Cadet mower battery replacements.

The product data covers 24V, 40V, 60V and 80V options, so each battery is useful only inside its stated Greenworks family. If your mower is a Kobalt, see Kobalt mower battery replacements.

Capacity comes next. Within the same voltage, a higher Ah number can give you more stated capacity, but the battery may also weigh more.

Pack count matters when you want a spare ready while another pack charges.

We also considered model-number coverage, charger matches, charge indicators and care information. Claims about cycle life, protection systems and warranty terms are treated as brand claims or stated product terms, not as guarantees of your results.

The best Greenworks lawn mower battery replacement picks

1. MAFACBAC 29472 for Greenworks 40V Battery: Best for broad 40V compatibility

1

MAFACBAC 29472 for Greenworks 40V Battery: Best for broad 40V compatibility

9.7/10Our score

• 40V output
• 6.0Ah lithium-ion capacity
• 1 battery pack
• Compatible with Greenworks G-MAX 40V lawn mower tools

This 40V, 6.0Ah lithium-ion pack covers many Greenworks G-MAX mower and tool model numbers. It suits buyers who want one higher-capacity replacement for a compatible 40V platform.

See it on Amazon

Pros

• 6.0Ah capacity
• Broad model compatibility
• Rechargeable lithium-ion pack

Cons

• Only one battery included
• Not for 24V, 60V or 80V platforms

The MAFACBAC 29472 is the best match for many Greenworks G-MAX 40V owners who need one higher-capacity replacement. It combines 40V output with 6.0Ah lithium-ion capacity, and its compatibility list includes 29472, 29462, 2901319, 25302, 24322, BAF724 and several other Greenworks model numbers.

That broad model coverage makes it useful when your old battery label is hard to read but still shows one of the listed numbers. If your mower calls for part 725-17335, compare batteries for that replacement number.

Confirm the exact model before buying because broad compatibility does not mean every Greenworks battery family uses the same pack.

The package includes 1 40V battery pack. The battery is rechargeable, and the data lists 6.5 x 3.3 x 3.5 in dimensions and 2.8 lb weight.

MAFACBAC states that the pack has no memory effect and meets FCC, RoHS and CE security testing standards. It also gives a 30-day return policy and 12-month product quality service.

Choose this greenworks lawn mower battery when your mower is a compatible 40V G-MAX model and you want 6.0Ah in one pack.

2. Vpment 60V 5.0Ah Replacement for Greenworks 60V: Best for 60V heavy yard work

2

Vpment 60V 5.0Ah Replacement for Greenworks 60V: Best for 60V heavy yard work

9.6/10Our score

• 60V output
• 5.0Ah capacity
• Compatible with more than 75 Greenworks 60V tools
• Works with specified Greenworks 60V chargers

The 60V, 5.0Ah pack is aimed at Greenworks 60V tools, including lawn mowers, blowers, chainsaws and trimmers. It fits buyers who need a single replacement for a 60V yard-tool system.

See it on Amazon

Pros

• 5.0Ah capacity
• More than 75 stated tool matches
• Compatible with specified 60V chargers

Cons

• Heavier than a smaller-capacity battery
• Not for 40V or 80V tools

The Vpment is the leading choice for Greenworks 60V owners who want a 5.0Ah replacement for mowers and other demanding yard tools. Its stated compatibility covers more than 75 Greenworks 60V tools, including lawn mowers, snow blowers, leaf blowers, chainsaws, hedge trimmers and string trimmers.

For collecting clippings on a compatible Greenworks mower, see replacement bags for Greenworks mowers.

It also matches Greenworks 60V chargers including CH60R00, 2936902 and CH60DP01. Check both the tool and charger numbers before ordering, especially if your yard has tools from more than one Greenworks generation.

The battery has a stated 5.0Ah capacity and weighs 3.7 lb. Vpment describes second-generation high-density cells, constant voltage output, auto-sleep mode and a 1% self-discharge rate.

The built-in BMS is described as protecting against short circuit, overcharge, over-discharge, overvoltage, overheating, reverse connection and overload. Vpment also states UL, CE, FCC and UN38.3 certification, plus a 1-year quality warranty and 30-day return and exchange service.

Choose this battery if your mower is a listed Greenworks 60V model and you want one 5.0Ah pack for several compatible tools.

3. MAFACBAC 24V Battery Replacement for Greenworks: Best for 24V mower owners

3

MAFACBAC 24V Battery Replacement for Greenworks: Best for 24V mower owners

9.4/10Our score

• 24V output
• 6.0Ah lithium-ion capacity
• 2-pack
• Compatible with specified Greenworks 24V tools

This two-pack is designed for Greenworks 24V lawn mowers, trimmers, weed blowers and other listed tools. It makes sense when your mower uses the 24V platform and you want two replacement packs.

See it on Amazon

Pros

• Two batteries included
• 6.0Ah capacity
• Lithium-ion design

Cons

• Only for the 24V platform
• Larger pack count may be unnecessary for one tool

The MAFACBAC 24V replacement is the right direction for Greenworks owners whose mower uses the 24V platform, not the more common 40V family. It includes two 6.0Ah lithium-ion batteries and lists compatibility with Greenworks 29842, 29852, LB24A020, 24322, BAG709, 29972 and LB24A040 models.

The two-pack is useful when you want a spare available during yard work. Each battery is rated at 24V and 6.0Ah, so check that your mower, trimmer or blower uses the matching 24V system before ordering.

The batteries are rechargeable, and the package includes 2 battery packs. The data lists each pack at 5.22 x 3.07 x 2.58 in, with a listed battery weight of 1,730 g.

MAFACBAC describes premium lithium-ion cells, low power consumption and no memory effect. It also states FCC, RoHS and CE security testing standards, with a 30-day return policy and 12 months of product quality service.

This is the best greenworks lawn mower battery replacement here for a 24V owner who wants two 6.0Ah packs.

4. OHYES BAT 2Pack 6.0Ah Replacement for Greenworks 40V: Best for two-pack 40V coverage

4

OHYES BAT 2Pack 6.0Ah Replacement for Greenworks 40V: Best for two-pack 40V coverage

9.2/10Our score

• 40V output
• 6,000mAh capacity
• 2-pack
• Includes compatibility with the Greenworks 29482 charger

This two-pack gives 40V G-MAX owners two 6,000mAh replacements and includes compatibility with the 29482 charger. Choose it when one battery is charging while another is ready for the mower.

See it on Amazon

Pros

• Two 6.0Ah batteries
• 40V G-MAX compatibility
• Four LED charge indicators

Cons

• Not for Greenworks 24V or 80V tools
• Includes a pair when one replacement may be enough

The OHYES BAT two-pack suits 40V owners who want two 6.0Ah replacements instead of one battery. It is compatible with Greenworks 40V models including 29472 and 29462, plus many listed mowers, blowers, trimmers and other power tools.

The package also matches the Greenworks 29482 charger. Its battery data specifies 40V output, rechargeable lithium-ion cells and a two-pack.

The four LED indicators help you check charge level before starting yard work. That quick check can help you plan whether to finish a pass, swap packs or move the spent battery to the charger.

OHYES BAT describes protection against overcharging, over-discharging, over-voltage, over-current and short circuit. The product information also says it is only compatible with Greenworks 40V tools, not Greenworks 24V or 80V tools.

Choose this product when your mower is a compatible 40V model and you want one battery ready while another is charging. It is less useful if you only need a single replacement pack.

Keep the spare pack clean and dry when it is not in use. Label which pack is charged so you do not start a session with a partly used battery by mistake.

5. OHYES BAT 1 Pack 6000mAh 29472 Lithium ion: Best for second-generation 40V tools

5

OHYES BAT 1 Pack 6000mAh 29472 Lithium ion: Best for second-generation 40V tools

9.0/10Our score

• 40V output
• 6,000mAh lithium-ion capacity
• 1-pack
• For second-generation Greenworks 40V tools

This single 6,000mAh pack is made for second-generation Greenworks 40V tools and replaces 29462 and 29472 batteries. It suits owners who need one battery and have confirmed the generation match.

See it on Amazon

Pros

• 6,000mAh capacity
• Single replacement pack
• Four LED charge indicators

Cons

• Not for first-generation 40V tools
• Model compatibility must be checked carefully

This OHYES BAT pack is a focused choice for owners of second-generation Greenworks 40V tools. It is a 6,000mAh lithium-ion replacement for 29462 and 29472 batteries, with compatibility covering several listed G-MAX mowers and other yard tools.

The single-pack format keeps the choice simple when one battery has failed. It also works with the Greenworks 40V 29482 charger, according to the product information.

A four-LED indicator shows charge and usage levels. OHYES BAT also describes protection against over-charge, over-discharge, over-current and short circuit, along with no memory effect and low self-discharge.

The key limitation is generation matching. The product is specifically for second-generation 40V tools and is not for Gen 1.

Check your mower model and old battery number before choosing it. A close voltage match is not enough when the generation and interface differ.

This pack suits a household that already knows its 40V system and needs one dependable spare. It is a poor fit for a first-generation tool or for a mower that uses a different Greenworks voltage.

6. Bslite 1 Pack 80V 3.0Ah Battery Replacement: Best for Greenworks 80V platforms

6

Bslite 1 Pack 80V 3.0Ah Battery Replacement: Best for Greenworks 80V platforms

8.7/10Our score

• 80V output
• 3.0Ah lithium-ion capacity
• 1-pack
• Digital LED power display

The Bslite pack targets Greenworks PRO 80V lawn mowers, leaf blowers and hedge trimmers. Its 3.0Ah capacity is positioned above the 2.0Ah model, while the LED display shows remaining power.

See it on Amazon

Pros

• 80V platform match
• 3.0Ah capacity
• LED power display

Cons

• Not for 40V or 60V tools
• Lower capacity than the 40V 6.0Ah picks

The Bslite is the correct voltage family for a Greenworks PRO 80V mower, leaf blower or hedge trimmer. It provides 3.0Ah lithium-ion capacity in one pack and is positioned as an alternative to the 2.0Ah Greenworks PRO 80V battery.

A digital LED power display lets you check remaining power. Bslite also describes a heat sink and heat dissipation system, along with six-fold protection that includes overcharging, overheating and over-current protection.

The battery is listed at 1.8 lb. Its model number is GW8030, and the package contains one rechargeable battery.

This pick is not a substitute for a 40V or 60V Greenworks battery. Choose it only after confirming that your mower uses the 80V PRO platform and that the battery interface matches your tool.

The 3.0Ah rating should be read inside the 80V group. It does not mean the pack will run longer than a 6.0Ah battery on a different voltage platform.

Let the battery cool before charging after heavy use. Store it away from heat and metal objects, and recharge it before use after a month or more in storage.

7. COMRGIKE 2 Packs 4000mAh Battery Replacement: Best for two 40V backup batteries

7

COMRGIKE 2 Packs 4000mAh Battery Replacement: Best for two 40V backup batteries

8.5/10Our score

• 40V output
• 4.0Ah capacity
• 2-pack
• For second-generation Greenworks G-MAX tools

This two-pack gives second-generation Greenworks 40V G-MAX owners two 4.0Ah replacements. It fits buyers who value a spare battery pair over the longer stated capacity of a 6.0Ah pack.

See it on Amazon

Pros

• Two batteries included
• 40V G-MAX compatibility
• LED charging indicator

Cons

• 4.0Ah capacity is below the 6.0Ah picks
• Not for first-generation tools

COMRGIKE gives second-generation Greenworks G-MAX owners two 40V batteries rated at 4.0Ah each. It fits the 29462 and 29472 battery family and lists compatibility with many Greenworks 40V mowers, trimmers, blowers and other cordless tools.

The two-pack makes sense for a longer mowing session when you want a charged spare. Its 4.0Ah capacity is below the 6.0Ah choices in this guide, so compare your runtime needs with the benefit of carrying two packs.

COMRGIKE describes 100% new cells, a precision interface, heat dissipation and an LED indicator for remaining battery level and charging status. It also lists UL, FCC and RoHS certifications and six-fold safety protection.

The compatibility note is important: these batteries are for Greenworks 40V G-MAX tools and not Gen 1. Confirm your mower generation before buying.

This pair suits owners who share one 40V platform across several tools. Rotating between a mower, trimmer and blower is easier when a second charged pack is already within reach.

Check the full model list for your exact mower before ordering. The two-pack advantage disappears if either battery cannot seat properly in your tool.

8. XAVITO Replacement for Greenworks 60V Battery 5.0Ah: Best for extended 60V protection

8

XAVITO Replacement for Greenworks 60V Battery 5.0Ah: Best for extended 60V protection

8.3/10Our score

• 60V output
• 5.0Ah lithium-ion capacity
• 1200+ stated charge cycles
• 5-year protection with free replacement

The XAVITO is another 60V, 5.0Ah option for Greenworks Pro tools and specified chargers. Its stated 1200+ cycles and 5-year protection make it a fit for buyers focused on the support terms and battery life claims.

See it on Amazon

Pros

• 5.0Ah capacity
• 60V tool compatibility
• 5-year protection stated

Cons

• One battery included
• 3.9 lb listed weight adds carrying load

XAVITO is another 60V option with 5.0Ah capacity, aimed at Greenworks Pro 60V tools. Its model is LB60A02H, and the compatibility list includes LB60A00, LB60A01, LB60A02, LB60A03, LB602, LB6025, LB604, LB6041, LB6042, LB6051, LB6080 and BAC723.

The battery weighs 3.9 lb and is rated at 300Wh. XAVITO also lists compatibility with several Greenworks 60V chargers, including CH60R00, 2951402, 2936902 and 2958702.

The brand states up to 1200+ charge cycles, 1% self-discharge and a 5-year protection term with free return and replacement. It also describes BMS protection against short circuits, overcharging, over-voltage and overheating.

Choose XAVITO when those 60V model and charger matches fit your equipment and the stated protection period matters to your decision.

The 3.9 lb weight is worth weighing against your work style. A heavier pack can be tiring on a handheld trimmer, even when it suits a mower or blower.

Compare this pack with the other 60V choice by model coverage and support terms. Both provide 5.0Ah, so fit and charger match should carry more weight than a small spec difference.

9. Fhybat 2 Packs 29472 Battery Replacement: Best for two 40V 6Ah packs

9

Fhybat 2 Packs 29472 Battery Replacement: Best for two 40V 6Ah packs

8.0/10Our score

• 40V output
• 6.0Ah lithium-ion capacity
• 2-pack
• Four-level LED charge indicator

Fhybat supplies two 6.0Ah replacements for Greenworks 29462 and 29472 batteries, with compatibility for the 29482 charger. It suits 40V owners who want two high-capacity packs and a charge indicator.

See it on Amazon

Pros

• Two 6.0Ah batteries
• 40V G-MAX compatibility
• Four-level LED indicator

Cons

• Only for the stated 40V models
• The two-pack weighs more to store and carry

Fhybat supplies two 6.0Ah batteries for Greenworks 40V 29462 and 29472 models. It also lists compatibility with the Greenworks 29482 charger and many Greenworks 40V cordless power tools.

The two-pack is useful when your mower work continues while another battery charges. Both packs are rechargeable, rated at 40V and fitted with four-level LED charge indicators.

Fhybat describes surrounding heat-release holes and protections against short circuit, over-charge, over-discharge, over-temperature, over-current and over-voltage. The listed model number is 29472, so compare that with your current battery before ordering.

This option is best for a 40V owner who wants two 6.0Ah replacements. It is not a match for Greenworks 24V, 60V or 80V platforms.

The four-level indicator helps you avoid guessing before you start. Press the check button and swap packs earlier if the reading is low.

Think about storage as well as runtime. Two packs take more space in a garage or shed, and both need a clean, dry place away from heat.

What should you check before buying a Greenworks replacement battery?

Check the voltage, battery model number, tool generation and charger match before comparing capacity. Greenworks 24V, 40V, 60V and 80V batteries belong to separate platforms in this guide.

Look at the old battery label and the mower manual. For 40V tools, model numbers such as 29462, 29472 and 2901319 appear across several products here, but some options are limited to second-generation tools.

Also decide whether you want one pack or two. A single pack is simpler for a direct replacement, while a two-pack can reduce waiting during mowing if both batteries are compatible.

For a different cordless battery system, compare the best worx lawn mower battery replacement before assuming another brand's pack will fit.

Does higher capacity mean longer mower runtime?

A higher amp-hour rating generally gives more stated capacity within the same voltage family, but it does not make a wrong-voltage battery compatible. Compare the 40V options by 4.0Ah and 6.0Ah only after confirming the mower uses the 40V G-MAX platform.

The 60V choices here both provide 5.0Ah, while the 80V Bslite provides 3.0Ah. Those numbers should be compared within their voltage group, not across every product in the guide.

Battery weight can also affect handling. The Vpment 60V battery is listed at 3.7 lb, XAVITO at 3.9 lb, and Bslite at 1.8 lb, while the product data gives different weight formats for several other packs.

Runtime also depends on the tool and the task. A mower pushing through thick grass will use capacity faster than a trimmer doing light edging, even on the same battery platform.

Heat and workload matter during a session. A battery that feels warm after hard work should be allowed to cool before the next charge, rather than being placed straight back on the charger.

Capacity is only one part of the choice. Fit, charger compatibility and generation matching decide whether a pack can be used at all, while amp-hours affect how long it can run once it fits.

A two-pack can change how capacity feels in daily use. You may get a shorter run from each 4.0Ah pack, but a charged spare can keep the mower moving while the other pack charges.

For a single-pack buyer, a 6.0Ah battery may suit a larger yard or heavier grass. For a lighter yard, a smaller capacity pack may be easier to carry and store.

Do not chase the largest amp-hour number across voltage groups. A 6.0Ah 40V pack is not a substitute for a 3.0Ah 80V pack, and the reverse is also true.

The safest comparison stays inside one platform. Match voltage and model first, then weigh capacity, weight and pack count for the work you actually do.

How should you store and charge a Greenworks lawn mower battery?

Let a battery cool before using or charging it, keep it dry and clean, and remove it from the tool during long storage or maintenance. The product information for several picks also advises storing a battery in a clean, dry, cool place away from heat and metal objects.

Remove the pack from the charger once it is fully charged when the product instructions call for that practice. Before seasonal use, recharge a stored lithium-ion battery according to the battery and charger instructions.

Never force a pack into a mower or charger. If the model number, voltage or interface does not match, stop and confirm compatibility before connecting it.

Keep terminals and contacts free from oil, grease and yard debris. A clean connection helps the battery seat properly and gives the tool a steady power supply.

Store batteries away from loose metal objects as well as heat. That simple habit reduces the risk of accidental contact during storage in a toolbox or shed.

Remove the battery pack from the tool when assembling parts, making adjustments or cleaning the mower. This habit also prevents an accidental start while you are working around the blade or deck.

If a tool stops during use, release the trigger to reset it before you investigate the battery. Do not keep pressing the control with a pack that has already cut out.

Let a hot battery rest after mowing, especially on a warm day. Charging a cooled pack is gentler than putting a warm pack straight onto the charger.

Plan seasonal storage with the charge level in mind. Recharge a battery before use after a month or more in storage, and follow the instructions for your exact pack and charger.

Treat charging as part of the routine rather than an afterthought. A cool, clean and dry battery is easier to manage, and it is more likely to be ready when the yard work starts.

Verdict: which greenworks lawn mower battery should you buy?

The MAFACBAC 29472 is the best overall greenworks lawn mower battery replacement for a compatible 40V G-MAX mower because it combines 6.0Ah capacity with broad model coverage. Pick the Vpment 60V 5.0Ah for a compatible 60V tool system, or the MAFACBAC 24V two-pack for a 24V mower.

Choose the OHYES BAT or Fhybat two-packs when you want two 40V batteries. Pick Bslite only for the 80V PRO platform, and verify the tool generation before selecting the OHYES BAT single pack or COMRGIKE pair.

For a general cost guide before you compare options, see How Much Does a New Lawn Mower Battery Cost?. You can also read How Is Greenworks Lawn Mower? for broader Greenworks mower context.

Our top 3 picks at a glance

1. 1
   Best for broad 40V compatibility

   MAFACBAC 29472 for Greenworks 40V Battery

   9.7/10 our score

   See it on Amazon
2. 2
   Best for 60V heavy yard work

   Vpment 60V 5.0Ah Replacement for Greenworks 60V

   9.6/10 our score

   See it on Amazon
3. 3
   Best for 24V mower owners

   MAFACBAC 24V Battery Replacement for Greenworks

   9.4/10 our score

   See it on Amazon

Frequently asked questions

How do I choose a Greenworks lawn mower battery replacement?

Match the battery voltage to your mower first, then confirm the battery model numbers and charger compatibility. A 40V battery is not a replacement for a 24V, 60V or 80V Greenworks platform.

After the voltage matches, compare amp-hour capacity and whether you need one pack or two.

Can Greenworks batteries be used across voltage platforms?

No. The products in this guide are separated into 24V, 40V, 60V and 80V groups.

The OHYES BAT 40V data specifically warns that its batteries are not compatible with Greenworks 24V or 80V tools, so check the voltage printed on your mower and old battery.

Is a higher Ah Greenworks battery better?

A higher amp-hour number means more stated battery capacity within the same voltage platform, but it can also affect weight and cost. Compare capacity only after voltage and model compatibility match.

A 6.0Ah 40V battery cannot replace a 3.0Ah 80V battery simply because the number is higher.

Should I buy one Greenworks replacement battery or a two-pack?

Buy one pack when you need a direct replacement and can wait while it charges. A two-pack helps when you want one battery in use and another ready, or when several compatible Greenworks tools share the same platform.

Confirm that both packs match your mower before ordering.