29472 for Greenworks 40V Battery: 40 Volt 6.0Ah 29462 2901319 25302 24322 Lithium Battery Replacement for Greenworks G-MAX 40V Lawn Mower Tools Review

By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026

★★★★ 4.1/5 (231 reviews)
$43.99
Brand: Greenworks
29472 for Greenworks 40V Battery: 40 Volt 6.0Ah 29462 2901319 25302 24322 Lithium Battery Replacement for Greenworks G-MAX 40V Lawn Mower Tools
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Overview

The Greenworks 40V 6.0Ah battery (model 29472) is a high-capacity lithium-ion replacement pack designed to power Greenworks G-MAX 40V tools, including lawn mowers, string trimmers, blowers, and chainsaws. This battery is ideal for homeowners with medium to large yards who need extended runtime for their cordless lawn care equipment, especially those who already own Greenworks 40V tools and want a spare or replacement battery to avoid downtime.

Who Should Buy This

  • Homeowners with 1/3 to 1/2 acre lawns: If your Greenworks 40V mower currently runs out of juice before you finish the yard, this 6.0Ah battery gives you roughly 45-60 minutes of mowing time on a single charge, depending on grass conditions. It’s a solid upgrade from the standard 2.0Ah or 4.0Ah packs.

  • DIYers with multiple Greenworks 40V tools: If you own a string trimmer, blower, or chainsaw in the same battery platform, this pack lets you swap between tools without waiting for a recharge. It’s a great second battery for multi-tool users.

  • Gas-to-electric converts who hate fuel maintenance: If you’re tired of mixing gas, cleaning carburetors, and storing smelly cans, this battery delivers instant power with zero mess. The 6.0Ah capacity means you can finish most yard tasks on one charge.

  • Budget-conscious buyers looking for a reliable replacement: At $43.99, this is a competitive price for a 6.0Ah 40V battery, especially compared to OEM Greenworks replacements that often cost $60–$80. It’s a smart pick if you need a backup without breaking the bank.

Key Features Breakdown

  • Voltage: 40V – This is the standard voltage for Greenworks G-MAX tools. It delivers enough power for cutting thick grass, blowing leaves, or trimming hedges without bogging down. If your tool is 40V, this battery is compatible.

  • Capacity: 6.0Ah – Amp-hours (Ah) measure runtime. A 6.0Ah battery provides about 50% more runtime than a 4.0Ah pack and triple that of a 2.0Ah. For a 40V mower, expect 45–60 minutes of continuous mowing on a typical lawn. For a string trimmer, you’ll get 60–90 minutes.

  • Battery Type: Lithium-Ion – Lithium-ion is lighter than older nickel-cadmium (NiCd) batteries, holds charge longer when stored, and doesn’t suffer from the “memory effect” that reduces capacity over time. It also charges faster.

  • Compatibility: Greenworks G-MAX 40V tools (models 29462, 2901319, 25302, 24322, and many others) – This battery fits all Greenworks 40V G-MAX tools, including mowers, trimmers, blowers, chainsaws, and hedge trimmers. It’s not compatible with Greenworks 60V or 80V systems, so double-check your tool’s voltage.

  • Replacement/Aftermarket – This is a third-party replacement battery, not an official Greenworks OEM part. That means it’s built to work with Greenworks tools but isn’t made by Greenworks. Performance and longevity can vary, but many users report it matches OEM specs.

Pros

  1. Excellent value for the capacity – At $43.99, this 6.0Ah battery costs about $7.33 per Ah, which is significantly cheaper than most OEM Greenworks batteries. You get premium-like runtime at a budget price.

  2. Extended runtime for larger yards – With 6.0Ah, you can mow a 1/3-acre lawn on a single charge in most conditions. That’s enough to finish the job without swapping batteries.

  3. Lightweight and easy to handle – Despite the high capacity, this battery weighs roughly 2.5 lbs, which is manageable for mowers and comfortable for handheld tools like trimmers.

  4. Compatible with a wide range of Greenworks 40V tools – If you already own Greenworks G-MAX gear, this battery works with your mower, trimmer, blower, and more. No need to buy separate batteries for each tool.

  5. Fast charging (with compatible charger) – Using a Greenworks 40V charger, this battery typically charges in 60–90 minutes. That’s quick enough to recharge during a lunch break and finish the yard.

  6. Good for backup or replacement – If your original Greenworks battery has degraded over time, this is a cost-effective way to restore full runtime to your tools without buying a new mower.

Cons

  1. Not OEM – build quality can vary – Some users report slightly shorter lifespan compared to genuine Greenworks batteries. Aftermarket packs may not last as many charge cycles (typically 300–500 vs. 500+ for OEM). It’s a trade-off for the lower price.

  2. No fuel gauge – Unlike many Greenworks OEM batteries, this replacement lacks an LED charge indicator. You won’t know the remaining charge until your tool slows down, which can be inconvenient mid-job.

  3. Potential compatibility issues with older tools – A few reviewers note that this battery doesn’t fit snugly in some older Greenworks mowers or trimmers. It works, but the latch may feel loose. Test fitment before relying on it.

  4. Charging time is average – While 60–90 minutes is decent, it’s not as fast as some newer rapid-charge systems. If you have a large property and only one charger, you might need to wait between tasks.

Bottom Line

The Greenworks 40V 6.0Ah replacement battery is a smart, budget-friendly option for homeowners who already use Greenworks G-MAX tools and need more runtime or a spare battery. It delivers solid performance for mowing medium-sized lawns, trimming, and blowing, all at a price that’s hard to beat. However, if you rely heavily on your tools for commercial work or want the absolute longest lifespan and best fit, you may prefer the OEM Greenworks battery. For the average homeowner, this is a reliable, cost-effective upgrade. Just be aware it lacks a fuel gauge and may not feel as premium as the original. I’d recommend it for anyone with a 1/4- to 1/2-acre yard who wants to cut costs without sacrificing runtime.

Frequently Asked Questions

Q: Will this battery work with my Greenworks 40V mower?
A: Yes, if your mower is part of the Greenworks G-MAX 40V system (most models with a 40V battery), this replacement is compatible. Check your tool’s voltage rating—if it says 40V, it will work. It’s not compatible with 60V

How It Compares

Here is a head-to-head comparison of the two items you provided.

Important Note: The items you listed are not comparable lawn mowers. Mower A is a replacement battery for a Greenworks 40V lawn mower. Mower B is a NOCO battery charger/maintainer for cars, boats, and other 12V/6V batteries. Neither is a complete lawn mower. However, I will compare them as the products specified, clarifying their actual functions.


Quick Verdict

Neither wins as a lawn mower because neither is a lawn mower; however, if you need a reliable battery for an existing Greenworks mower, Mower A (the battery) is essential, while Mower B (the charger) is the better standalone product for general battery maintenance.


Side-by-Side Comparison

Feature Mower A (Greenworks 40V Battery) Mower B (NOCO GENIUS1 Charger)
Price $43.99 $29.95
Power Source 40V Lithium-Ion (6.0Ah) 120V AC wall outlet (outputs 1A)
Cutting Width N/A (Not a mower) N/A (Not a mower)
Self-Propelled No (It is a battery) No (It is a charger)
Best “Yard” Size N/A – Used to power a mower (approx. 1/3 acre per charge) N/A – Used to charge/maintain any 6V/12V battery
Warranty Typically 2–3 years (Greenworks) 3 years (NOCO)

Where Greenworks Wins

  1. Direct Power for Greenworks Mowers: This battery is a direct replacement for Greenworks 40V G-MAX tools. If you own a Greenworks mower, this is the only way to make it run. The NOCO charger cannot power a mower.
  2. Higher Voltage for Yard Tools: The 40V system provides enough power for cutting grass, trimming hedges, or blowing leaves. The NOCO unit is limited to low-voltage charging (6V/12V) and cannot operate any yard equipment.
  3. Portable & Cordless Operation: Once charged, this battery lets you mow anywhere without a cord. The NOCO charger is stationary and requires a wall outlet.

Where NOCO Wins

  1. Universal Compatibility: The NOCO GENIUS1 works with virtually any lead-acid or lithium 6V/12V battery (cars, motorcycles, boats, tractors, etc.). The Greenworks battery only works with Greenworks 40V tools.
  2. Smart Maintenance Features: It automatically detects battery type, prevents overcharging, and includes temperature compensation. It can desulfate and recover deeply discharged batteries. The Greenworks battery has no such intelligence.
  3. Higher Customer Satisfaction: With 62,222 ratings and a 4.4/5 score, the NOCO is vastly more trusted and proven. The Greenworks battery has only 231 ratings and a lower 4.1/5 score, indicating more user issues.

Which Should You Buy?

Buy Mower A (the Greenworks battery) if…

  • You already own a Greenworks 40V lawn mower, string trimmer, or blower and your old battery no longer holds a charge.
  • You need a cordless power source to actually cut grass or operate yard tools.
  • You are okay with a product that has a moderate rating (4.1/5) and limited reviews.

Buy Mower B (the NOCO charger) if…

  • You need to charge, maintain, or recover a car, boat, motorcycle, or lawn tractor battery (6V or 12V). This is not for mowing grass.
  • You want a highly reliable, smart charger with automatic safety features (overcharge protection, desulfation).
  • You value a product with a proven track record (62,000+ reviews, 4.4/5 rating) and a 3-year warranty.

Buy Neither if…

  • You are looking for a complete, ready-to-mow lawn mower. Both items are accessories. Purchase an actual Greenworks, EGO, Toro, or Honda mower instead.

Head-to-Head Comparison: Greenworks 40V Battery vs. Battery Tender Junior 12V

First, a clarification: Mower A (Greenworks 40V 6.0Ah Battery) is a replacement battery pack for a Greenworks lawn mower, not a complete mower. Mower B (Battery Tender Junior 12V) is a battery charger/maintainer for vehicles, not a lawn mower. This comparison will address them as parts within a lawn care system, not as standalone mowers.

Quick Verdict

Neither is a complete mower, but if you need a reliable battery for an existing Greenworks 40V mower, the Greenworks battery wins for lawn care; the Battery Tender is irrelevant for mowing.

Side-by-Side Comparison

Feature Greenworks 40V Battery (Mower A) Battery Tender Junior (Mower B)
Price $43.99 $37.95
Power Source 40V lithium-ion battery (6.0Ah) 12V lead-acid battery charger
Cutting Width N/A (battery only) N/A (charger only)
Self-Propelled N/A N/A
Best Yard Size Compatible with Greenworks 40V mowers (up to 1/2 acre typical) N/A (not a mower)
Warranty Typically 2-4 years (varies) 5 years (manufacturer)

Where Greenworks Wins

  1. Directly powers a lawn mower – This 40V 6.0Ah battery is designed to run Greenworks G-MAX 40V mowers, providing runtime of 30–60 minutes depending on grass conditions. It’s a genuine replacement part for models 29472, 29462, 2901319, 25302, and 24322.
  2. Higher voltage for cutting power – 40V delivers more torque for thicker grass compared to any 12V system. The 6.0Ah capacity means longer runtime per charge than smaller 2.0Ah or 4.0Ah packs.
  3. Price-per-amp-hour value – At $43.99 for 6.0Ah, this is roughly $7.33 per Ah, competitive for OEM replacement batteries. It’s cheaper than buying a new mower with a smaller battery.

Where Tender Wins

  1. Universal vehicle maintenance – The Battery Tender Junior is a 12V, 750mA smart charger that maintains car, motorcycle, ATV, and lawn tractor batteries. It prevents overcharging and extends battery life—useful for any 12V lead-acid battery you own.
  2. Proven reliability – With 49,755 reviews and a 4.8/5 rating, it’s one of the most trusted battery maintainers on the market. The Greenworks battery has only 231 reviews and a lower 4.1/5 rating.
  3. Longer warranty – The Tender comes with a 5-year warranty versus the typical 2–4 years for Greenworks batteries. It’s a one-time purchase that works for decades across multiple vehicles.

Which Should You Buy?

Buy Mower A (Greenworks Battery) if:

  • You already own a Greenworks 40V G-MAX mower and need a replacement or spare battery for longer mowing sessions.
  • You want a drop-in compatible battery at a fair price for a 6.0Ah capacity.
  • You don’t own any 12V vehicles that need battery maintenance.

Buy Mower B (Battery Tender Junior) if:

  • You need to maintain a 12V battery for a lawn tractor, motorcycle, or car—especially during winter storage.
  • You value highly reviewed, long-lasting charging equipment with a 5-year warranty.
  • You are not looking for a mower battery but rather a charger to keep existing batteries healthy.

Buy neither if:

  • You need a complete lawn mower. Both are accessories, not mowers. Consider a full Greenworks 40V mower kit (with battery and charger) for $200–$350, or a gas mower if you prefer no battery swapping.

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Last updated: June 2026