2Pack 40V 6000mAh 29472 Replacement Battery 6.0Ah and 29482 Charger Compatible with GreenWorks 40V GMAX Battery 29252 20202 22262 25312 25322 20642 22272 27062 G-MAX Lawn Mower Power Tools(3Pack) Review
By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026
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This isn’t a mower itself — it’s a 2-pack of 40V 6.0Ah replacement batteries plus a compatible charger, designed for the entire GreenWorks 40V GMAX lineup. If you own a GreenWorks mower, trimmer, blower, or chainsaw that uses the GMAX platform, this kit gives you double the runtime and a reliable charger to keep both cells topped up. It’s built for homeowners who already own GreenWorks 40V tools and want to extend their work sessions without waiting for a single battery to recharge.
Who Should Buy This
- Homeowners with ¼ to ½ acre lawns using a GreenWorks 40V mower — one battery runs the mower while the other charges, so you never stop mid-yard.
- Multi-tool GreenWorks users who own a string trimmer, leaf blower, or hedge trimmer alongside their mower. Two batteries let you swap between tools without downtime.
- Budget-conscious DIYers who want the higher-capacity 6.0Ah cells (instead of the standard 4.0Ah or 2.0Ah packs) for longer runtimes, at a price that beats buying two singles.
- Anyone tired of gas engines — you already have the electric mower; now get the battery capacity to finish the job without fumes, pull-cords, or trips to the gas station.
Key Features Breakdown
- 6.0Ah Capacity (6000mAh) per Battery – This is the big draw. Compared to the common 4.0Ah packs that ship with many GreenWorks mowers, these 6.0Ah cells give you roughly 50% more runtime. On a typical 40V mower, expect 45–60 minutes of continuous cutting per battery, depending on grass thickness and blade speed.
- Compatibility with GMAX 40V Platform – Works with models 29252, 20202, 22262, 25312, 25322, 20642, 22272, 27062, and all other GreenWorks GMAX 40V tools. If your tool says “GMAX” on it, these fit. The charger (model 29482) is also universal for the platform.
- 2-Pack + Charger Combo – You get two batteries and one charger. That means you can charge one while using the other, effectively doubling your work window. The charger is a standard 40V unit — not a rapid charger, but it’ll top a dead 6.0Ah pack in about 2–3 hours.
- LED Charge Indicator – Each battery has a 4-LED gauge so you can check remaining power at a glance. No guesswork — just press the button and see if you need to swap.
- Lightweight Design – At roughly 2.5 lbs per battery, they’re easy to swap in and out of your mower or handheld tools. No heavy lifting or sore arms.
Pros
- Massive runtime boost – Two 6.0Ah batteries mean you can mow a ⅓-acre lawn on a single charge cycle, with a backup ready. That’s 2–3 times the runtime of a single stock 2.0Ah pack.
- Universal fit for GMAX tools – If you already own multiple GreenWorks 40V tools, these batteries work across all of them — mower, trimmer, blower, chainsaw, you name it.
- Cost-effective 2-pack – At $97.99 for two 6.0Ah batteries plus a charger, you’re paying about $49 per battery. Buying two singles separately often costs $70–$80 each.
- No memory effect – Lithium-ion cells don’t need to be fully drained before recharging. Top them off whenever you want without degrading capacity.
- Solid build quality – The batteries snap in firmly, have rubberized grips for easy removal, and the charger is compact enough to hang on a garage wall.
- Eco-friendly alternative – No gas, no oil mixing, no emissions. Just plug in and go.
Cons
- Charger is not a rapid charger – It takes 2–3 hours to fully charge a 6.0Ah battery. If you drain both packs, you’re looking at a 4–6 hour wait to get back to full capacity. A rapid charger would be nice, but it’s not included.
- Heavier than stock 2.0Ah batteries – The 6.0Ah cells weigh about 2.5 lbs each. That’s fine for mowers, but on a handheld trimmer or blower, the extra weight can fatigue your arms over a long session.
- Compatibility is limited to GMAX only – These won’t work with GreenWorks’ newer 80V or 60V systems, or with non-GMAX 40V tools. Double-check your tool’s label before buying.
- Some users report shorter lifespan than OEM – A handful of reviews mention that after 1–2 seasons, battery capacity drops noticeably. GreenWorks original batteries tend to hold capacity longer, but these aftermarket packs cost less than half the price, so it’s a trade-off.
Bottom Line
If you own a GreenWorks 40V GMAX mower (or any GMAX tool) and find yourself running out of juice mid-lawn, this 2-pack of 6.0Ah batteries is a smart, affordable upgrade. You get nearly double the runtime of standard 4.0Ah packs, a backup battery so you never have to stop, and a charger that keeps everything organized. The slow charge speed and slight weight increase are honest drawbacks, but for the price — roughly $50 per high-capacity battery — it’s hard to beat. I recommend it for anyone mowing a ¼ to ½ acre lot or running multiple GreenWorks 40V tools.
Frequently Asked Questions
Q: Will these batteries work with my GreenWorks 40V mower model 25312?
A: Yes. The 25312 uses the GMAX 40V platform, and these batteries (model 29472) are fully compatible. They’ll slide right in and give you longer runtime than the stock 4.0Ah pack.
Q: How long does it take to fully charge one 6.0Ah battery?
A: With the included 29482 charger, expect about 2–3 hours for a full charge from empty. The charger is a standard unit, not a rapid charger, so plan accordingly if you need to recharge both packs.
Q: Can I use these batteries in GreenWorks 80V tools?
A: No. These are specifically designed for the 40V GMAX platform only. GreenWorks 80V tools use a completely different battery shape and voltage. Check your tool’s label for “40V GMAX” compatibility before purchasing.
How It Compares
Here is a head-to-head comparison of the two products you listed.
Important Note: The two items you provided are not both lawn mowers. Mower A is a set of replacement batteries and a charger for GreenWorks 40V tools (including mowers), while Mower B is a garden dump cart (a utility wagon). This comparison will evaluate them based on their actual functions, helping you decide which product solves your specific yard-care problem.
Quick Verdict
Mower B (Gorilla Cart) wins for overall yard utility because it is a highly-rated, proven heavy-duty tool for hauling, while Mower A is merely a battery accessory that only works if you already own a GreenWorks tool.
Side-by-Side Comparison
| Feature | Mower A (GreenWorks Battery Pack) | Mower B (Gorilla Cart) |
|---|---|---|
| Price | $97.99 | $129.99 |
| Primary Function | Power source for electric tools | Hauling & dumping yard waste |
| Power Source | 40V Lithium-Ion (Rechargeable) | Manual (Pull or Tow) |
| Cutting Width | Not applicable (battery only) | Not applicable |
| Self-Propelled | No (powers a mower, not itself) | No (must be pulled by hand or vehicle) |
| Best Yard Size | Any size (if you own a GreenWorks mower) | Any size (for transporting debris) |
| Warranty | Not specified (typically 30-90 days for batteries) | Not specified (Gorilla Carts typically 1 year) |
Where Greenworks Wins
- Extends Cordless Mower Runtime: If you already own a GreenWorks 40V G-MAX mower (e.g., model 25312 or 27062), this 2-pack of 6.0Ah batteries gives you up to 60–90 minutes of continuous cutting power, letting you finish a large lawn without recharging.
- Cost-Effective Replacement Kit: At $97.99 for two high-capacity batteries and a charger, this is significantly cheaper than buying a new mower with batteries. It’s a smart upgrade for owners of older GreenWorks tools with worn-out batteries.
- Versatile for Other Tools: These batteries are compatible with many GreenWorks 40V tools (string trimmers, blowers, chainsaws). You can use them across your tool collection, not just for mowing.
Where Gorilla Wins
- Immediate, Universal Utility: The Gorilla Cart works right out of the box for any yard task—hauling grass clippings, leaves, mulch, soil, firewood, or tools. It doesn’t require you to own another brand or tool.
- Exceptional Build & User Rating: With a 4.7-star average from over 30,000 reviews, the Gorilla Cart has proven reliability. Its 600 lb haul capacity, 4 cu ft poly tub, and pneumatic tires make it far more durable and capable than cheap plastic wagons.
- Quick-Release Dumping: The cart’s dump feature lets you tilt the tub to unload heavy loads (like wet grass or soil) without lifting. This saves significant back strain compared to scooping debris out of a stationary bin.
Which Should You Buy?
Buy Mower A (the battery pack) if: You already own a GreenWorks 40V G-MAX mower (or other 40V tool) and your current batteries are dying or don’t last long enough to finish your lawn. This is a pure replacement/upgrade purchase, not a standalone tool.
Buy Mower B (the Gorilla Cart) if: You are looking for a new, versatile yard tool to help you move heavy or bulky materials (grass, leaves, mulch, dirt, stone). This is ideal if you don’t have a mower yet, or if you already have a mower (gas or electric) and need a way to clean up after it.
Skip both if: You need an actual mower. Neither item cuts grass. If you are starting from scratch, buy a complete mower (gas or electric with included battery), then consider the Gorilla Cart for cleanup.
Here is a head-to-head comparison based on the provided specifications.
Important Note: Mower A is actually a battery and charger set for Greenworks 40V tools, not a lawn mower itself. Mower B is a string trimmer/edger, not a lawn mower. This comparison will treat them as the tool types they actually are: a battery system for a mower (A) vs. a cordless trimmer (B).
Quick Verdict
Mower B (WORX trimmer) wins for immediate usability because it is a complete, ready-to-use tool with two batteries, while Mower A is only a battery pack that requires you to already own a Greenworks mower to function.
Side-by-Side Comparison
| Feature | Mower A (Greenworks Battery Kit) | Mower B (WORX Trimmer/Edger) |
|---|---|---|
| Price | $97.99 | $89.99 |
| What you actually get | 2 batteries (6.0Ah) + 1 charger | 1 trimmer/edger + 2 batteries (20V, 2.0Ah each) + charger |
| Power Source | 40V Lithium-ion | 20V Lithium-ion |
| Cutting Width | N/A (accessory only) | 12 inches |
| Self-Propelled | N/A (depends on your mower) | No (handheld) |
| Best Yard Size | N/A (powers a mower for ~1/2 acre) | Small yards / trimming tasks (up to 1/4 acre) |
| Warranty | Not specified (likely 2-3 years on battery) | 3-year limited warranty (WORX) |
Where Greenworks Wins (Mower A – the Battery Kit)
- Higher Voltage & Capacity: The 40V system with 6.0Ah batteries provides significantly more power and runtime than a 20V trimmer. If you own a Greenworks 40V mower, these batteries can deliver 30–45 minutes of continuous mowing per charge, far exceeding the runtime of the WORX trimmer.
- Better Value for Existing Owners: For someone who already has a Greenworks 40V mower (e.g., model 29252 or 25322), this kit is an excellent deal. Two high-capacity 6.0Ah batteries plus a charger for under $100 is roughly half the cost of buying them separately from Greenworks.
- Versatility within the Greenworks Ecosystem: These batteries work with over 40 different Greenworks 40V tools (leaf blowers, chainsaws, hedge trimmers). If you already own those tools, this kit expands your runtime across your entire yard tool lineup.
Where WORX Wins (Mower B – the Trimmer)
- Complete, Ready-to-Use Tool: This is a fully functional string trimmer and edger. You plug in the battery and start trimming immediately. Mower A requires you to own a separate mower—it is useless on its own.
- Proven Popularity & Reliability: With 27,806 reviews and a 4.4-star rating, the WORX WG163 is one of the best-selling cordless trimmers on the market. Its reliability, light weight (5.5 lbs), and ease of use are well-documented by thousands of users.
- Command Feed & 2-in-1 Design: The WORX features a “Command Feed” system that lets you advance the trimmer line by simply pressing a button (no bumping). It also converts from a trimmer to a wheeled edger with a simple lever, saving you from buying two separate tools.
Which Should You Buy?
Buy Mower A (the Greenworks battery kit) if:
- You already own a Greenworks 40V mower and need extra runtime or a backup battery.
- You are invested in the Greenworks 40V ecosystem and want to power multiple tools (blower, chainsaw, etc.) with high-capacity batteries.
- Your main need is replacing old, worn-out batteries for your existing Greenworks mower. This is a cost-effective upgrade.
Buy Mower B (the WORX trimmer) if:
- You do not own any electric yard tools yet and need a complete, ready-to-use solution for trimming and edging.
- You have a small yard (under 1/4 acre) where a full mower is not needed, or you already have a gas mower and just need a lightweight trimmer for cleanup.
- You want a proven, highly-rated tool with easy line-feed and edging capabilities, backed by 27,000+ positive reviews.
Buy neither if:
- You need an actual lawn mower. Mower A is just batteries, and Mower B is a trimmer. Neither cuts grass like a mower.
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