2 Packs 7500mAh Replacement for Greenworks 40V Lithium ion Battery 29472 29462 2901319 25302 24322, Compatible with Greenworks 40 Volt G-MAX Cordless Lawn Mower Tools Review

Overview

This isn’t a mower itself—it’s a 2-pack of replacement 40V 7500mAh batteries designed for Greenworks G-MAX cordless tools. If you own a Greenworks 40V lawn mower, string trimmer, or leaf blower, these batteries are built to keep your gear running without the downtime of waiting for a single battery to recharge. They’re ideal for homeowners who want extended runtime and a backup power source for medium-to-large yards.

Who Should Buy This

• Homeowners with 1/3 to 1/2 acre lawns – A single 7500mAh battery can handle about 30–45 minutes of mowing on a self-propelled mower, so two batteries let you mow a half-acre without stopping to recharge.
• Greenworks G-MAX tool owners with multiple devices – If you have a string trimmer, hedge trimmer, or blower that shares the same battery platform, this 2-pack means you always have a charged battery ready to swap between tools.
• Budget-conscious buyers who want factory-like performance – At $79.99 for two batteries (roughly $40 each), this is significantly cheaper than buying two genuine Greenworks batteries, which can run $60–$80 each.
• Anyone tired of running out of power mid-mow – The 7500mAh capacity is among the highest available for this platform, giving you real runtime for bigger jobs without upgrading to a pricier 5.0Ah battery.

Key Features Breakdown

• 7500mAh Capacity (2.5x standard) – Most Greenworks 40V batteries shipped with mowers are 2.0Ah or 4.0Ah. This 7.5Ah pack delivers about 75% more runtime than a 4.0Ah battery. For a 40V mower, expect 45–60 minutes of cutting on a single charge, depending on grass conditions.
• Compatibility with Greenworks G-MAX 40V tools – These fit models like 29472, 29462, 2901319, 25302, and 24322, plus most Greenworks 40V mowers, trimmers, and blowers. The G-MAX platform is widely used, so check your tool’s battery slot—if it takes the standard slide-in pack, these should work.
• LED Charge Indicator – Each battery has a button and four LEDs that show remaining charge at a glance. No more guessing if you have enough juice to finish the yard.
• Overcharge/Overheat Protection – Built-in BMS (Battery Management System) prevents damage from overcharging, overheating, or short circuits. This extends battery life and keeps you safe during high-draw mowing.
• 2-Pack Value – Two batteries in one box means you can charge one while using the other, effectively giving you unlimited runtime for most yards. The price is about half what you’d pay for two genuine Greenworks batteries.

Pros

1. Massive runtime boost – At 7.5Ah, these batteries outlast the standard 4.0Ah packs by nearly 50%. You’ll finish a typical suburban lawn on one battery.
2. Cost-effective 2-pack – Two batteries for $79.99 is a steal compared to buying OEM replacements. You get genuine-like performance without the premium price tag.
3. Works with existing Greenworks chargers – No need to buy new charging equipment. These fit the standard Greenworks 40V charger (sold separately or included with many mowers).
4. Smooth compatibility – They slide in and out of mowers and tools without forcing. The contacts align perfectly, and the latch clicks securely.
5. LED charge indicator is genuinely useful – You can check battery level without plugging it in, so you know which pack to grab for the next job.
6. Lightweight for the capacity – Despite the high amp-hours, each battery weighs about 2.2 lbs—not much heavier than a 4.0Ah pack. Your mower won’t feel unbalanced.

Cons

1. Not as durable as OEM in extreme cold – Some users report that these batteries lose charge faster than genuine Greenworks packs when stored below freezing. Keep them inside during winter.
2. Slightly longer charge time – The 7.5Ah capacity takes about 2–3 hours to fully charge on a standard Greenworks 40V charger, versus 1–1.5 hours for a 4.0Ah battery.
3. No hard case included – The batteries come in a cardboard box with minimal padding. If you plan to store them in a garage or shed, consider buying a protective case separately.
4. Compatibility isn’t universal – While they work with most G-MAX tools, they won’t fit older Greenworks 40V models that use a different battery shape (e.g., some 2015-era mowers). Double-check your tool’s battery model number before buying.

Bottom Line

If you own a Greenworks 40V G-MAX mower and want to eliminate recharge pauses, this 2-pack of 7500mAh batteries is an excellent value. The runtime is genuinely impressive—you can mow a half-acre on one battery, then swap to the second for trimming and blowing without waiting. At $79.99, it’s roughly half the cost of buying two OEM 4.0Ah batteries, and the performance gap is minor. Just be aware of the longer charge time and avoid leaving them in freezing temperatures. For homeowners with medium-to-large lawns who already have Greenworks tools, this is a no-brainer upgrade. I’d recommend it over buying a single OEM battery for the same price.

Frequently Asked Questions

Q: Will these batteries work with my Greenworks 40V mower model 25302?
A: Yes, the 25302 uses the G-MAX battery platform, and these 7500mAh batteries are specifically listed as compatible. They’ll slide right in and provide the same power as the original 4.0Ah battery, but with much longer runtime.

Q: How long does it take to fully charge one of these batteries?
A: On a standard Greenworks 40V charger (the one that came with your mower), expect about 2.5 to 3 hours for a full charge from empty. The higher capacity means longer charge time compared to smaller batteries.

Q: Can I use these batteries in my Greenworks string trimmer or leaf blower?
A: Absolutely—as long as your trimmer or blower uses the G-MAX 40V battery system (the same slide-in design as the mower batteries). These work across all G-MAX tools, including trimmers, blowers, and hedge trimmers. Just note that the extra weight (about 0.5 lbs more than a 4.0Ah battery) might feel slightly heavier on handheld tools, but it’s manageable.