Call Us 0800 800 880

GreenWorks G-MAX 40V 4.0Ah Li-Ion Battery

In Stock
$189
or 4 payments of $47.25 on
Price GuaranteeSeen a lower price?Ask us to beat it

✔ FREE Shipping on all Greenworks 40V garden tools. Don’t miss out, limited time only.

Read more
Shipping options to
Please select one
Quantity: 1
18 people have this in their cart
Add to Wishlist

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.

FEATURES
• 4.0Ah, 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

SPECIFICATIONS
Product code: 2927007
Model: G40B4
Voltage: 40V
Charging time 100% (4Ah): 120mins
Battery pack capacity: 4Ah
Watt hours: 144Wh
Weight: 2kg

View product video

Greenworks

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

Questions and answers

2 votes
Q:
How many discharge cycles is it rated for?
A:
Up to approx 2000.
By Trade Tested on January 20 2020
0 votes
Q:
How much time does the battery last for before it runs out while in use?
A:
This is not an easily answered question, this is rated at 4Ah (amp hours), which means it has enough charge to run for an hour when a steady current of 4A is being drawn. However in practice no tool really runs like this - it depends on power needed to run the tool and loading required by the job. So even on the same tool (say a chainsaw) the run time will change depending on the hardness of the wood etc.
By Trade Tested on January 05 2021
1 vote
Q:
Is it a direct replacement for the 2 AH unit and does the charger suit both 2 and 4 AH Batteries?
A:
Yes to both.
By Trade Tested on March 26 2020
See more questions and answers (1)

Overall rating

  • 5 star
    86%
  • 4 star
    12%
  • 3 star
    2%
  • 2 star
    0%
  • 1 star
    0%
All reviews (58)

Read reviews that mention

  • one battery
Excellent battery

I already have a 4.0ah and 2.0ah but the additional 4.0ah lets me keep on working much longer and in fact can be recharging one battery while one is being used and the other cooling down so I can almost work all day.

Bob Waihi
Excellent charge

Was a little worried how long each individual charge would last. But did sides and top of my 20 metre driveway, trimmed three hibiscus and took to Auckland to do similar amount at daughters property; one charge!

Tails New Plymouth
Mower battery

Since buying this battery I’ve used it once on my mower and lent it to my neighbour for them to finish off mowing their lawns. I’ll be using it again because the grass keeps on growing.

Dave Waikato
Great battery

I can get a full mow and trim on my property utilising one battery, but having a second one removes any need for urgency and potentially an untidy job. The batteries are great and being interchangeable between products is a HUGE bonus... and means that I will also be growing my artillery of garden care tools from GreenWorks :)

Reuben Wellington
Buy extra

Recharges in about 2 hours, lasts about 20 minutes in the lawnmower and closer to an hour in the line trimmer.

JL Greymouth