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GreenWorks G-MAX 40V 2.0Ah Li-Ion Battery

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Product overview

Product overview

The GreenWorks G-MAX 40V lithium-ion battery system delivers longer run time, higher performance, and greater output among all GreenWorks G-MAX tools.

About GreenWorks The future is here and it's electric. Once you’ve experienced the power, convenience and economy of a 40V garden tool there will be no going back. The G-MAX 40V Li-Ion range from GreenWorks is already a best-seller in the US and Europe, now it’s ready to revolutionise the way Kiwi’s take care of their backyard.

GreenWorks tools are clean, green, quiet and maintenance free, with no compromises – experience the future today.

• 2.0Ah, 40V Lithium-Ion battery
• Compatible with all products within the GreenWorks 40V range
• Fast charging
• No memory effect
• No self-discharge
• One GreenWorks G-MAX 40V battery powers all Greenworks 40V tools
• 3 Year Greenworks Battery Warranty

Product code: 2926907
Model: G40B2
Voltage: 40V
Charging time 100% (2Ah): 60min
Battery pack capacity: 2Ah
Watt hours: 72Wh
Weight: 1.4kg

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Can we help?

Our friendly and knowledgeable gurus are trained to answer all your questions as quickly as possible. So if there’s anything you need to know just give us a call during business hours, or send us an email any time.

0800 800 880
Customer questions

Questions and answers

-2 votes
q: Are all batteries interchangeable ie if I brought the 12 in Chainsaw, could I also get a 6Ah battery and it would fit?
a: Yes that's correct.
By Trade Tested on May 15, 2020
Customer reviews

Customer reviews

Overall rating

4.9 out of 5 stars from 15 reviews
Amric Auckland

Lithium ion battery

about 1 month ago


It doesn't take long to charge and it seems to go and go. I set it to charge the night before and its fully charged when I awake. So far I have trimmed the hedge for approx 3 hours and it has never missed a beat.

Nani Auckland

Love it - love it - love it

3 months ago


I now have 2 batteries and my 4 acre property is getting good lawn care and I am getting plenty of exercise.

Craig Auckland


3 months ago


Great spare battery and lighter to use. Glad I got a spare to keep working

Gazza Christchurch

40 volt 2ah battery

3 months ago


40 volt 2ah battery , purchased an extra battery when I bought the long reach hedge trimmer. I can use for approx 40 minutes before it needs charging. Yes I would recommend.

MikeA Auckland

Ok for a back up for a lawn mower

3 months ago


Used this size battery for a hedge trimmer and a mini chainsaw trimmer and it was very good, for a lawn mower it did not last long, but good for a back up.

Bruce Willis Waikato

Small capacity battery for smaller jobs

3 months ago


Came free with lawn mower. Handy to get a little more lawn done but probably only mows 200m2 with the 21inch lawnmower.

Julz Rongotea

Li-Ion Battery

4 months ago


I'm a woman and these batteries have a push button mechanism on the front to release them - as opposed to buttons on either side of the battery like other battery powered tools do. This means that you don't have to have the hands of a rugby player to release the battery.

Harbourside Whangarei


5 months ago


Bought as an addition to the collection.

Jakikua Waikato

Gets the job done

7 months ago


Love the GreenWorks range and find this battery perfect for using my chainsaw and weedeater. The battery last a decent amount of time, being adequate to get the job done.

I don't have one Otaki, Kapiti Coast, Wellington

very useful addition

10 months ago


Good to have a back up but not needed as yet. The 1st battery has good capacity

Browny Waikato

no problems at all greenworks

about 1 year ago


I bought an extra battery but found i didn't need to as the one battery lasted a fair while.

Charlie Auckland

GreenWorks G-MAX 40V 2.0Ah Li-Ion Battery

about 1 year ago


Works as advertised.

Richard Canterbury

Battery for blower

over 2 years ago


A good, light battery that charges quickly. It adds very little weight to the appliance and yet it seems to last for ages.

Livingproof Cambridge

Excellent Backup Battery

over 2 years ago


Bought as a backup battery to the 4.0AH one. Don't have to worry about running out of power. When on discharges, put on the 2.0AH and carry on while the big one is recharging.

Roger Waikato

G-Max Li-Ion Battery

over 3 years ago


Holds charge well, has good power.

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