TREE.NB 40V 6000mAh Replacement Battery 2-Pack for GreenWorks G-MAX — High-Capacity, LED Fuel Gauge

These are two TREE.NB 40V 6000mAh lithium-ion replacement batteries designed to drop into GreenWorks G-MAX 40V second-generation cordless tools and extend runtime with onboard fuel-level LEDs and built-in safety protections.

If your GreenWorks 40V G-MAX mower, blower, trimmer or other lawn equipment is running short on power, this 2-pack offers a higher-capacity swap-in option. Each battery is rated 40 volts and 6000mAh (6.0Ah / 240Wh), engineered to fit the listed GreenWorks models that accept the second-generation cartridges. The cells include a charge indicator, cooling vents, and an internal management circuit to protect against overcharge, overcurrent and short-circuit conditions.

Which GreenWorks models does this replace and are there compatibility exceptions?

These batteries are built to be 100% replacements for many GreenWorks G-MAX second-generation 40V packs used across mowers, trimmers, blowers and more. They match the form and electrical specs of the referenced OEM part numbers.

• Compatible with model numbers: 29472, 29462, 2901319, 24282, 24252, 21332, 25322, 20672, 2101602, 20312, 24322, 21362, 26272 and similar second-generation packs.
• Includes DOE-style snap-in interface and four-LED fuel gauge for quick status checks.
• Not compatible with first-generation GreenWorks 40V batteries and specifically incompatible with 21" mower MO40L02.

How long will the TREE.NB 6000mAh battery run my tools?

Runtime varies with the tool, load and working conditions, but the 6.0Ah capacity increases usable time versus lower-capacity packs. Expect longer work periods for tasks like edging, trimming and light mowing before you need to swap or recharge.

• Higher capacity (6000mAh) yields noticeably longer runtimes than standard 4.0Ah–5.0Ah packs.
• Four-LED fuel gauge helps plan work sessions and avoid unexpected shutdowns.
• Two batteries in the pack let you rotate one while the other charges for near-continuous operation.

What safety and durability features are included?

Each battery includes an integrated management chip and protective circuitry to reduce common battery risks and extend service life. The housing has heat-dissipating vents and a snap-fit design to secure the connection in compatible tools.

• Built-in microcontroller provides overcharge, over-discharge, overcurrent and short-circuit protections.
• Surrounding vents accelerate cooling under load to reduce thermal stress.
• Compliant with CE, RoHS and FCC-related safety and emissions expectations.

How do I install and check the charge level?

Installation is tool-free: slide the battery into the tool’s compartment until it clicks. The four-LED indicator on the pack shows remaining charge so you can plan refills and avoid downtime.

• Snap-in mounting matches the G-MAX second-generation interface for a secure fit.
• Press the indicator button to view the four-LED charge level at a glance.
• Use with the manufacturer’s 40V charger or any compatible 40V G-MAX charger rated for Li-ion packs.

Who is this for: Homeowners and pros who own GreenWorks 40V G-MAX second-generation cordless equipment and want longer runtime without buying OEM packs. This two-battery set suits landscapers who need hot-swap capability, DIYers who want backup power for extended yard work, and anyone replacing aged or failing 40V lithium packs—note the pack is not for first-generation tools or the MO40L02 21" mower.