40V Lithium Battery for Greenworks 6.0Ah 2-Pack - High Capacity

In this review of the 40V Lithium Battery for Greenworks, the bottom line is simple: this 2-pack of 6.0Ah lithium-ion batteries is aimed at homeowners who need extended run time for Greenworks G-MAX 40V lawn mowers and other 40V outdoor tools. The reviewer found these batteries deliver higher capacity than many stock cells, are fully compatible with a wide list of Greenworks models, and are a practical replacement option when longer mowing sessions are required. The biggest reason to buy is the added runtime from the 6.0Ah capacity offered in a convenient two-pack.

Key Features

• High capacity 6.0Ah: Offers extended run time so users can complete larger lawns on a single set of charges.
• 40 Volt compatibility: Designed to work with Greenworks G-MAX 40V lawn mowers and a broad list of 40V power tools for flexible use.
• 2-pack convenience: Two batteries in the box provide backup power and reduce downtime while one battery charges.
• Lithium-ion cells: Built-in premium cells deliver fast charging, low power consumption and no memory effect for reliable reuse.
• Safety certifications: Pack complies with FCC, RoHS and CE testing standards to meet common regulatory expectations.
• Manufacturer support: Comes with a 30 day return policy and 12 months product quality service for buyer reassurance.

Who It's For

This product is well suited to homeowners and landscapers who already own Greenworks G-MAX 40V equipment and need longer runtime than a single lower-capacity battery provides. The 6.0Ah capacity and two-battery bundle are practical for mowing medium to large yards, running trimmers or powering leaf blowers with fewer interruptions.

It is less compelling for users who only perform very short tasks or who need a lightweight, compact pack; a smaller capacity OEM cell may be lighter. Also, buyers who require a specific branded warranty from the original manufacturer should confirm coverage expectations before purchase.

Pros & Cons

Pros

• Higher 6.0Ah capacity gives noticeably longer run times for lawn mowers and tools.
• Two batteries included reduces wait time by allowing one to charge while the other is used.
• Broad compatibility with many Greenworks 40V models makes this a flexible replacement option.

Cons

• Some customers report mixed battery life and charge ability, so individual results may vary.
• Physical size can be larger than certain original batteries, which might affect fit or handling for a few users.

Specifications

Our Verdict

The 40V 6.0Ah 2-pack is a sensible value-focused replacement for Greenworks 40V users who need longer run time and the flexibility of a spare battery. While customer reports about charge retention are mixed, the higher capacity cells and included certifications make it a practical choice for completing larger yard work without frequent battery swaps.

Frequently Asked Questions

Will these batteries fit my Greenworks G-MAX mower?
They are designed to be compatible with Greenworks G-MAX 40V lawn mowers and a long list of 40V models; check your mower model against the compatible model list before purchasing.

How long is the warranty and return window?
The item includes a 30 day return policy and 12 months of product quality service from the date of purchase.

Are these safe and certified?
Yes, the pack complies with FCC, RoHS and CE security testing standards and uses premium lithium-ion cells.