40V 4.0 Ah Battery

In stock
Model
29472
4Ah Battery- 29472 is rated 3.6 out of 5 by 78.
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  • Compatible with all Greenworks 40V G-MAX tools
$200.00
In stock
 

Perfect for yards up to 1/2 acre, Greenworks 40V tools are lightweight, start instantly, and require virtually no maintenance – no gas, no oil, no mess – but still deliver gas-like power.

  • High performance G-MAX 40V 4.0 Ah lithium-ion battery delivers fade-free power with no memory loss after charging
  • The G-MAX 40V battery system powers 10+ tools offers a complete lawn care solution
  • Easy to use design snaps in and out of tools
  • Quick charge time of 120 minutes
  • 3 Year Limited Battery Warranty
Voltage:
40V
Power:
Cordless
Battery Capacity:
4.0 Ah
Battery Chemistry:
Li-Ion
Battery Warranty:
3 Years
  • (1) 40V G-MAX 4.0 Ah Battery

Batteries & Chargers FAQS

Can I leave my battery in the charger after charging it?

Though you certainly can, we advise customers to remove the battery from the charger after it has been fully charged and to also unplug the charger from the outlet. The battery chargers do have auto cut offs to prevent it from overcharging but it's still best to follow good electrical safety practices. Doing so will also help prevent false defects readings and will allow the charger to reset itself each time it’s used to charge a battery.


Why do batteries cost so much more than the tool?

Batteries are the most important components for battery-operated units and happen to be the costliest items to manufacture and ship in any kit. We price our batteries with the cost of material, manufacturing, and current market pricing in mind. Full kits that include a tool, battery, and charger are priced affordably so that consumers can begin building a line of tools (24V, 40V, 60V, etc.) with battery compatibility and move forward purchasing tool-only units.


How do I store the battery? Can I leave the battery in the garage or shed?

We suggest storing the battery indoors and away from direct sunlight in a cool, dry area. Leave the charger unplugged and the battery disconnected from the charger unless it needs charging. It's best to store the battery with a full charge and to check on the charge every couple of months if it goes without use. If you notice the charge has dropped, we advise charging the battery back up to full before returning it to its safe storage place. Following these steps will ensure you get the most out of the battery life.


My battery is stuck in my tool. How do I get it out?

For 60V and 80V: To remove the battery, push and hold the battery release button. Then, pull the battery pack straight out. The battery pack fits snugly into the product to prevent accidental dislodging while in use—it sometimes may require a strong pull to remove. In some cases, the springs underneath have gotten locked down and you might need to press the top of the battery to re-engage them to help the battery pop up. Before use, make sure that the rails on the battery and product are free of debris that could cause the battery to get stuck.


My battery is stuck in my tool. How do I get it out?

For 24V and 40V: To remove the battery, press the latch button down on the battery pack and hold. Then, pull the battery pack out of the handle. The battery pack fits snugly into the product to prevent accidental dislodging while in use—it sometimes may require a strong pull to remove. Before use, make sure that the rails on the battery and product are free of debris that could cause the battery to get stuck.


How do I check the charge on my battery?

Press the battery capacity indicator (BCI) button located at the end of the battery. The lights will illuminate according to the battery capacity level. Please note that this switch requires a firm, direct push using the tip of your finger. If the button is not being fully engaged, the lights will not activate. The lights will only stay on for a few seconds and then will automatically turn off. Be advised, the lights might not power on is if the battery is completely depleted of power and needs to be charged.


Can I use any Greenworks battery in any Greenworks tool?

No, our batteries are only interchangeable with tools that belong to the same voltage platform (24V batteries only work with 24V tools, 40V batteries only work with 40V tools, etc.). The difference between batteries of the same voltage is the ampere-hour (Ah) rating. The higher the ampere-hour (Ah) rating on the battery, the more run time it has to offer.


Are there certain tools that can’t accept all same voltage batteries?

Yes, there are a few exceptions. Our 80V 20” snow thrower models 2600402 / 2605202 / 2601302 manufactured prior to September of 2017 can only use 2.0Ah or 2.5Ah battery models. Our 60V 8.0Ah battery model 2957102 cannot be used in the following tools: any 60V 12" Snow Shovel, any 60V 22" Snow Blower, any 60V Tiller/Cultivator, and any 60V Lawn Mower.


Do all batteries of the same voltage use the same charger?

Yes! Each product line has designated charger models that can charge all batteries in that voltage platform despite Ah rating.


The charger indicates that my battery is fully charged but I was just using it and it depleted. Why isn’t it charging?

Putting a battery that was just in use onto the charger often results in a false full charge signal. Remove the battery from the charger and allow it to rest in a room temperature area for about 10-15 minutes before charging.


My charger is flashing red when I engage my battery. What is happening?

When the battery is inserted into the charger and the status LED blinks red, remove the battery from the charger for one minute, then reinsert. If the status LED blinks green, then the battery is properly charging. If the status LED is still blinking red, remove the battery and unplug the charger for one minute. After one minute, plug in the charger and reinsert the battery. If the status LED blinks green, the battery is properly charging. If the status LED is still blinking red, then this likely indicates an issue with the battery or charger and should be taken care of either with our warranty team or by means of replacement.


My charger has a solid red light on it when I engage my battery. What is happening?

This typically indicates that the battery is at the wrong temperature to be charged. Allow the battery and charger to rest indoors at room temperature until they are no longer hot/cold then try charging again.


Are your chargers made for 220V or 120V?

Greenworks chargers sold in the USA and Canada are designed for use on 120V outlets only.


Rated 5 out of 5 by from Best value Best value per amp hour (ah). I looked at several sites and found these to be the best price with the best reviews over the other sites. I ordered two to go with the one that had. These work great with my 20" lawn mower ( has storage for second for a total of 8ah). I also use them with my pole trimmer which comes in real handy with 2 acres of trees around my home which include palm trees which need constant trimming.
Date published: 2022-01-30
Rated 5 out of 5 by from Works Great Battery worked first time in my snowblower and lasted an entire driveway plus the neighbors in about 6 inches of snow
Date published: 2022-01-22
Rated 5 out of 5 by from Extra help for acreage I can get so much done! Can mow and bag my half acre back yard on one charge
Date published: 2021-12-09
Rated 5 out of 5 by from 4Ah Battery I like that it has its own tester that lets me know it is ready to go or needs charged. I would recommend it to a friend.
Date published: 2021-11-28
Rated 5 out of 5 by from Mower is up and running! Bought to replace my mower battery that expired. Back to mowing again!
Date published: 2021-07-24
Rated 5 out of 5 by from Highly recommend! Excellent product. Holds a charge longer than any other similar product we have used in the past.
Date published: 2021-07-08
Rated 5 out of 5 by from Impressed Battery lasts a lot longer than expected. Much longer than competitor.
Date published: 2021-07-05
Rated 5 out of 5 by from Save the planet Perfect performance for my mower. Helps get the job done. Would highly recommend Greenwotks products to anyone who loves to conserve the earth.
Date published: 2021-06-19
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Rated 5 out of 5 by from Best value Best value per amp hour (ah). I looked at several sites and found these to be the best price with the best reviews over the other sites. I ordered two to go with the one that had. These work great with my 20" lawn mower ( has storage for second for a total of 8ah). I also use them with my pole trimmer which comes in real handy with 2 acres of trees around my home which include palm trees which need constant trimming.
Date published: 2022-01-30
Rated 5 out of 5 by from Works Great Battery worked first time in my snowblower and lasted an entire driveway plus the neighbors in about 6 inches of snow
Date published: 2022-01-22
Rated 5 out of 5 by from Extra help for acreage I can get so much done! Can mow and bag my half acre back yard on one charge
Date published: 2021-12-09
Rated 5 out of 5 by from 4Ah Battery I like that it has its own tester that lets me know it is ready to go or needs charged. I would recommend it to a friend.
Date published: 2021-11-28
Rated 5 out of 5 by from Mower is up and running! Bought to replace my mower battery that expired. Back to mowing again!
Date published: 2021-07-24
Rated 5 out of 5 by from Highly recommend! Excellent product. Holds a charge longer than any other similar product we have used in the past.
Date published: 2021-07-08
Rated 5 out of 5 by from Impressed Battery lasts a lot longer than expected. Much longer than competitor.
Date published: 2021-07-05
Rated 5 out of 5 by from Save the planet Perfect performance for my mower. Helps get the job done. Would highly recommend Greenwotks products to anyone who loves to conserve the earth.
Date published: 2021-06-19
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Can you leave the battery on the charger at full charge or should your remove it. I have two chargers and five tools that’s why am asking if there is such a thing as overcharging it

Asked by: Getty
Hello Getty, The battery chargers do have auto cut-offs to prevent them from overcharging. However, we do advise customers to remove the battery from the charger after it has been fully charged and to also unplug the charger from the outlet, as this is good electrical safety practice to do so. This will also help to prevent false defects reading and allows the charger to reset itself each time it’s used to charge a battery.
Answered by: Greenworks Support
Date published: 2022-09-19

Can you use an 80v charger for a 40v battery?

Asked by: Homey
Hello Homey, No, you cannot. Each product line has a designated charger model that can charge all batteries in that voltage platform, despite the Ah rating but you cannot cross voltages.
Answered by: Greenworks Support
Date published: 2022-08-12

Why does my new 4.0 AH battery not run my mower. It starts and then shuts off immediately. It shows a full charge. My 2.0 AH starts and works perfectly in this mower. I have a Model# 29462 and upgraded to a #29472. This battery was just recieved yesterday

Asked by: Papak
Hello Papak, We're sorry to hear about your experience! It sounds like you will need to contact us directly as some further information would be required to better assist. We kindly ask that you give us a call at 1-888-909-6757 (1-888-90WORKS). Please ensure that you have access to the unit, battery, and charger upon calling so that we can complete troubleshooting with you and gather the necessary unit information.
Answered by: Greenworks Support
Date published: 2022-08-09

I have 3 40V Greenworks tools, models 21332, 22342 and 22262 that use a 2AH battery I share between them. Will the 40V 4AH battery fit and work in them also?

Asked by: Mick8
Hello, Yes, this 4.0Ah battery will be compatible with your tools! It will yield a longer run time.
Answered by: Greenworks Support
Date published: 2022-07-13

My 40 volt 2.0 ah battery seems to have died. It doesn't charge so I'm not sure if it is the battery or the charger that is bad. Can I replace the battery with 4 or 6 ah instead of the 2.0? This is for the trimmer and extended chain version.

Asked by: Homemade
Hello Homemade, If your battery is model 29462 then yes you can replace it with the GreenWorks G-Max 4.0, 5.0 and 6.0Ah batteries.
Answered by: Greenworks Support
Date published: 2022-08-09

I ordered a saw off your amazon prime page that came with a battery like this a year ago and it's stopped working. I've tried calling number numerous times to get in touch with someone and I'm left on hold for 30+ min the disconnected. Someone help

Asked by: ChrisD732
Hello ChrisD732, We apologize for the existing wait times. Our team is working diligently to be in contact with each waiting customer as quickly as we can while giving each person the attention they deserve. Unfortunately, we understand this is not ideal, but we want to be clear that this is not a normal experience for Greenworks. Here are a few troubleshooting suggestions to check out. 1) When the battery is inserted, the light should begin flashing green to indicate the battery is charging. If this light is not igniting or is flashing red, this may indicate an issue and we would be interested in hearing more about this. If the light simply goes solid red, try removing the battery and unplugging the charger for about 10 minutes and place them both indoors in a room temperature setting, as this might indicate the battery is at the incorrect temperature to be charged. 2) Ensure that the battery has been fully inserted into the charger. Sometimes this requires a firm push into place to make sure that it has been properly seated. 3) Try resetting the charger. To do this, simply unplug it for approximately 10 minutes and then plug it back in and try reinserting the battery. If the charger has been plugged in for extended periods of time, this can sometimes cause the charger to malfunction. Should you continue to experience a problem with the battery and charger, please contact Greenworks Pro toll-free helpline at 1-855-345-3934. All we ask that you have access to the battery and charger so that we can complete troubleshooting with you and gather necessary unit information.
Answered by: Greenworks Customer Care
Date published: 2022-08-09

Can a 40v battery be used in a 48v leaf blower

Asked by: Big ALs
Hello Big ALs, Our 40V battery cannot be used with an 48V units and vice versa. Greenworks manufactures a range of voltage platforms from 24V - 80V, each voltage platform has its own set of interchangeable tools and battery but are not interchangeable across different voltage platforms. Only Greenworks batteries, chargers and machines of the same voltage are compatible and interchangeable with one another.
Answered by: Greenworks Customer Care
Date published: 2022-07-14

I have a chainsaw that uses greenwork batteries looking for a weedeater that also uses same battery my battery model # is BAF724 40 VOLT lithium max 4.0 ah.

Asked by: snooter69
Hello snooter69, This battery can be used with all of our 40V products on our site! Here is a link to the 40V string trimmers: https://www.greenworkstools.com/shop-by-tool/string-trimmers?voltage=18
Answered by: Greenworks Support
Date published: 2022-08-09
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40V 4.0 Ah Battery
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