What's the difference between 24V and 40V Greenworks tools?

The 24V range is designed for lighter tasks around the home — hedge trimming, small lawn mowing (320mm), drilling, line trimming, and leaf blowing. Tools are lighter and more compact. The 40V range is built for heavier garden work — full-size lawn mowing (460mm+), chainsaws, brush cutting, and high-powered blowing. 40V tools have brushless motors and more runtime. All batteries within a voltage range are interchangeable — any 24V battery fits any 24V tool, and any 40V battery fits any 40V tool.

Are Greenworks batteries interchangeable between tools?

Yes — that's the core of the Greenworks system. Every 24V battery works in every 24V tool, and every 40V battery works in every 40V tool. However, 24V and 40V batteries are NOT cross-compatible — they're different physical sizes and voltages. Start with a kit (tool + battery + charger), then add skin-only tools to expand your collection affordably.

What does 'skin only' mean?

A 'skin' is the tool without a battery or charger — just the bare tool. If you already own a Greenworks battery and charger in the same voltage (24V or 40V), buying skins is the most cost-effective way to expand your tool collection. Kits include the tool plus a battery and charger.

How do Greenworks tools compare to petrol equivalents?

Greenworks battery tools are significantly quieter (typically 20-40% less noise), produce zero direct emissions, require almost no maintenance (no oil changes, spark plugs, fuel filters, or pull-start cords), and start instantly with a button press. The trade-off is runtime — you're limited by battery capacity rather than a fuel tank. For most residential use, a 4.0Ah battery provides plenty of runtime. For larger properties, a second battery or the larger 6.0Ah option keeps you going.

What warranty do Greenworks tools come with?

Greenworks tools carry a 2 year residential warranty on parts and labour. Rechargeable batteries are covered for 1 year. Consumable parts (blades, belts, filters, cables, batteries) and normal wear are not covered, nor is damage from improper handling, neglect, or unauthorised service. Non-transferable — keep your receipt, original purchaser only. Commercial customers — call us on 0800 800 880 to discuss coverage; we assess case-by-case under the Consumer Guarantees Act. Claims are handled by Trade Tested at 0800 800 880 or support@tradetested.co.nz.

How long do Greenworks batteries take to charge?

Charge times depend on battery size: a 2.0Ah battery charges in about 30-60 minutes, a 4.0Ah in about 60-90 minutes, and a 6.0Ah in about 90-120 minutes. The charger has LED indicators showing charge progress. Greenworks batteries have built-in overcharge protection — you can leave them on the charger safely. For best battery life, store at room temperature and avoid leaving batteries fully depleted for long periods.

Can I use Greenworks tools in the rain?

Greenworks battery tools are not designed for use in heavy rain or wet conditions. Light moisture is generally fine, but avoid submerging the tool or battery in water. Store tools and batteries indoors in a dry location. The battery terminals and charger contacts should be kept dry and clean.

Who distributes Greenworks in New Zealand?

Trade Tested is the New Zealand distributor for Greenworks. All warranty claims, spare parts, and support are handled locally by Trade Tested — call 0800 800 880 or email support@tradetested.co.nz. Greenworks is manufactured by Globe Inc and is one of the world's largest battery-powered outdoor tool brands.

Are Greenworks ride-on mowers available in NZ?

Greenworks ride-on mower availability varies — contact Trade Tested at 0800 800 880 or support@tradetested.co.nz for current stock and pricing. Note that ride-on mowers use a different battery platform to the 24V and 40V ranges — batteries are not interchangeable between voltage tiers.

What's the best Greenworks lawn mower for a standard NZ section?

For a standard residential section (under 500m²), the 40V 460mm Brushless Lawnmower with 4.0Ah Kit is the most popular choice and one of the highest-reviewed Greenworks products. For smaller lawns or easy storage, the 24V 320mm Brushless Lawnmower is compact and lightweight. For larger properties, the 40V 460mm Self-Propelled model with a 6.0Ah battery reduces effort on slopes and longer sessions.

Greenworks 40V 4.0Ah Li-Ion Battery

Name: Greenworks 40V 4.0Ah Li-Ion Battery
Brand: Greenworks
SKU: 2927007
Price: 129 NZD
Availability: InStock
Rating: 4.7 (195 reviews)

4.7 (195 reviews)

$129

Buy at Trade Tested

2yr Tools / 1yr Batteries

Battery Interchangeable

NZ Support

Fit Information

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 Kiwis 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 40V 4.0Ah Li-Ion Battery Manual (PDF, 3.7 MB)

Specifications

Weight	2.00 kg
Category	Garden & Lawn > Garden Power Tools > Batteries & Chargers
SKU	2927007

Specifications verified: 2026-10-23

Customer Reviews

Recent Reviews

18 Oct 2026

James✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Greenworks 40V Chainsaw 16" Brushless 4.0Ah Kit

great product, perfect for pruning and cutting small to medium sized trees.

11 Sept 2026

Great when it's working✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

3 failed cells stopped it charging

This is my 2nd of these batteries due 2 the 1st 1 having been used & charged 6 x over 2 yrs B4 it failed 2 chg

9 Sept 2026

Toren✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

So far so good

Only got to use this battery once so far, but happy with the purchase

24 Aug 2026

L✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Kick A**E!

The 40V polesaw really punches above its weight and combined with the 4AH battery, iI get tired before it does

18 Aug 2026

Leoke.✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Use of Greenworks battery

Works well, like all the items we bought. Verry happy to bought a 2nd one. Always ready to start the work, Thank you for that. Leo

24 Jun 2026

AUNTY✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Spare battery

Enjoy using my greenworks tools for longer so needed a spare battery to make sure the jobs get done while the weather is good. Battery pergorms well fits charger perfectly.

30 May 2026

Tee aye✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Unhappy with this..1 out of 10

This battery doesn't last very long

14 May 2026

Phil✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Not bullet proof

I have 2 of these about 3 years old. One has recently completely failed and wont recharge despite using tricks to fix and taking it to a specialist battery place to get it repaired no luck with either. Now where to dispose?.

29 Apr 2026

Susan✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Battery for electric mower

Needed to buy this as mower has space for 2 batteries but only comes with one! One is only enough capacity to do front lawn and grass verge. Need 2nd battery to do back lawn.

16 Apr 2026

Sue✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Battery backup

Bought this new battery as a back up for our original Greenworks mower now we have a larger area to mow. Great product.

15 Apr 2026

Steve✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Very Reliable

So glad I finally got a second battery for the mower. Been using these same 2 for the mower and trimmer for years but was not enough to do both. Never had any charging problems and they last well.

7 Apr 2026

Peter✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Slow charging but works as advertised

I think these are overpriced for 4Ah batteries, but given how many fakes the Chinese spew out on Temu and Alibaba, at least you can be sure this battery IS actually a 40V 4Ah battery. Charging on these genuine batteries is slow - well over an hour. So at the very least you'll need 2 of these (I now have 5...). They run for between 20 and 40 minutes depending on how often I stop to clear the catcher and how long/wet the grass is. I'd actually prefer the next model up in terms of amperage, but they are ludicrously expensive and so this model - in the middle of the range - strikes the best balance between cost and performance.

31 Mar 2026

Sue✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

4.0 AH battery

Originally I bought at 5.0 AH battery to use with my mower. When I went to buy a backup battery, there only appeared to be 4.0 AH batteries. After enquiring about this, I was assured the 4.0 AH battery will work just as well...I have found this to be true.

29 Mar 2026

What the✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

It's a battery

I hope this review changes someone's life.

22 Mar 2026

Barry✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Greenworks 40V 4.0Ah Li-lon Battery

Great Battery

7 Mar 2026

T P✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Mower battery

I can how mow all my lawn without a break

11 Feb 2026

Nick✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Great Product

Works well great to have two batteries

5 Feb 2026

Carol✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Green works 40v lawnmower battery

Excellent product works well thought for size it would get more than 3 small mows but I still recommend this product

2 Feb 2026

Yvonne✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Battery mower

Excellent product. Always great from the trade tested team

22 Jan 2026

Peter✔ Verified Buyer

Greenworks 40V 4.0Ah Li-Ion Battery

Mostly work as advertised

I was curious as to how well 4.0Ah batteries would perform in a heavy mower - let's just say I'm "on the fence" about them. One of the 3 I bought doesn't have the same run time as the other 2, but I've yet to do extensive testing under different scenarios to confirm this. Charging is a bit slow to what I'm used to, but probably in line with the power of these batteries. Depending on grass length and other variables, I can get up to 45 minutes of effective mow time, bearing in mind that's not 45 minutes of run time since there are frequent stops to empty the catcher. When the grass is longer than a couple of cm, effective usefulness drops to 20-25 minutes, which is to be expected. For those people who have large/difficult lawns to mow, I think you might find the performance of these batteries a bit of the light side. Unfortunately, there are no 6 or 9Ah versions available (even though they'd be expensive). I bought 2 to go with the one I got with the new mower - I may yet buy a 4th. I can see 3 won't be enough for spring growth later this year, and the relatively slow charging time means that I could end up with significant delays trying to complete the mowing I want to do. I suppose in all fairness, these batteries represent reasonable value for money - just don't expect miracles from them, and be mindful that charging time is at least 45 minutes (don't quote me on that - I haven't spent the time yet to time one). What WOULD be good is if Trade Tested sold a double charger with 2 batteries pack at a good price.

All Greenworks reviews →

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So far so good

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Unhappy with this..1 out of 10

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