24V 4.0Ah 21700 Battery with Bi-Directional USB-C Port

24V 4.0Ah 21700 Battery with Bi-Directional USB-C Port

SKU BB240CAA1 | MODEL# PA400X

$ 79 .99

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【GREENWORKS 24V LITHIUM-ION BATTERY】Delivers more fade-free power with no memory loss after charging.
【NOT ONLY BATTERY, BUT ALSO POWER BANK】With Bi-Directional USB-C Port for charging iPhone Series, iPad, Galaxy, Pixel, and More.
【LED BATTERY FUEL INDICATOR】Integrated LED fuel indicator provides immediate feedback on state of the battery.
【MULTI-PROTECTION TECH】Built in battery management system (BMS) ensures complete protection for your devices.
【ONE BATTERY POWER ALL】Greenworks 24V batteries are compatible with 200+ Greenworks tools in the same voltage for total freedom of movement when gardening without tangled cables.

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24V 4.0Ah 21700 Battery with Bi-Directional USB-C Port

$ 79 .99

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Key Features Get answers to all the questions you might have in your mind for this product

Delivers 20% more power and 35% more runtime than 18V batteries. Greenworks 21700 Batteries deliver lower internal resistance and better heat dissipation performance.
Integrated 65W Bi-Directional USB-C Port for convenient charging of all your USB-C devices like iPhone Series, iPad, Galaxy, Pixel, and More directly from your Greenworks Battery/Power Bank.
Integrated LED fuel indicator provides immediate feedback on the batteries charge level and charging status.
Greenworks 24V PowerAll batteries are compatible with 200+ Greenworks tools and with a USB-C port that can be used to power all of your USB-C devices you have all the power you need at home or on the go.

Specifications & Guides Find specifications as well as additional supporting information about our product

Capacity 4.0Ah

MAX Power 86.4Wh

Indicator On-Board LED

Power Bank USB-C Port

Product Specifications

accessories	Batteries & Chargers
battery_capacity_1	4.0 Ah
battery_warranty	3 Years
power	Cordless
voltage	24V

Additional Details More information about this product

Greenworks 24V 4.0Ah Lithium-Ion High-Power Battery (Genuine Battery/ 200+ Compatible Tools) with Bi-Directional USB-C, Universal Portable Charger, Power Bank for iPhone 16 Series, iPad, Galaxy, Pixel, and More

24V lithium-ion battery delivers fade-free power with no memory loss
Onboard fuel indicator shows you how much charge is remaining
Diagnostic LED light indicates when charging process is complete
Bi-Directional USB-C Port& less fatigue
Compatible with 200+ Greenworks 24V Tools
3-Year Limited Battery Warranty

What's Included Everything that comes with this product

(1) 24V 4.0 Ah Battery
(1) Owner's Manual

Help & FAQ Answers to the most frequently asked questions

1.Is it safe to leave the battery connected to the USB-C charger after it is fully charged?

Our chargers include auto shut-off protection. However, for best performance and safety, we recommend: Unplugging the charger when not in use Disconnecting the battery once it is fully charged This allows the charger to reset properly and helps avoid false-fault indications.

2.Does fast charging affect battery lifespan?

No. Our Greenworks USB-C charging technology manages temperature, voltage, and current to ensure safe, efficient charging that protects long-term battery health.

3.Can the battery be used to charge other devices (power-bank mode)?

Yes. With bi-directional USB-C, supported 24V batteries can power external devices such as phones, tablets, laptops (depending on wattage).

4.Why do batteries cost so much more than the tool?

The battery is the most important component for a battery-operated unit. Please be assured we price our batteries with the cost of material, manufacturing, and current market pricing in mind. Batteries are the costliest items to manufacture and ship in any kit. Full kits including a tool, battery, and charger are priced affordably so that consumers can begin building that line of tools and move forward purchasing tool-only units. When you purchase batteries on their own, it is more notable the cost that they carry.

5.Do all batteries of the same voltage use the same charger?

Yes, they do. Each product line has designated charger models that can charge all batteries in that voltage platform, despite Ah rating.

6.Can I use any Greenworks battery in any Greenworks tool?

Our batteries are interchangeable with tools that are of the same voltage platform only. The difference between batteries of the same voltage is the ampere-hour (Ah) rating. The higher the ampere-hour (Ah) rating on the battery is the more run time it has to offer.

7.My battery is stuck in my tool. How do I get it out?

24V/40V: To remove the battery, press the latch button on the battery pack down and hold. Pull the battery pack out of the handle. The battery pack fits securely into the product to prevent accidental dislodging while in use; it may require a strong pull to remove. Before use, be sure that the rails on the battery and product are free of debris that could cause the battery to get stuck.

About Greenworks See how Greenworks is always making life better

20+ Years of Battery-First Innovation.

We’ve been pioneers of battery-powered outdoor tools since 2002, designing smarter tools with battery technology at their core to get work done faster.

#1 Battery Brand for Commercial Landscapers.

Trusted by professionals worldwide for performance, durability, and reliability, our tools are built to handle real-world all-day work.

Power That Replaces Gas Without the Hassle.

Sustainable technology delivers more power, longer runtimes, and zero gas, fumes, or engine maintenance, saving you time, money, and trouble.

One Battery. Endless Possibilities.

Choose the right voltage platform for your needs and share batteries across hundreds of tools in the yard, garage, jobsite, and beyond.

Smartly Designed. Built to Last.

Designed and engineered in-house for cleaner, quieter, smarter performance, with purpose-driven features that fit seamlessly into everyday life.

Proven Across 500+ Tools and Applications.

From maintaining your backyard to powering large jobsites, our battery expertise scales across 500+ professional and consumer tools built for real-world use.

Key Features

Delivers 20% more power and 35% more runtime than 18V batteries. Greenworks 21700 Batteries deliver lower internal resistance and better heat dissipation performance.
Integrated 65W Bi-Directional USB-C Port for convenient charging of all your USB-C devices like iPhone Series, iPad, Galaxy, Pixel, and More directly from your Greenworks Battery/Power Bank.
Integrated LED fuel indicator provides immediate feedback on the batteries charge level and charging status.
Greenworks 24V PowerAll batteries are compatible with 200+ Greenworks tools and with a USB-C port that can be used to power all of your USB-C devices you have all the power you need at home or on the go.

Specifications & Guides