Greenworks 40V Battery Adapter for DeWalt 20V & Milwaukee 18V
Greenworks 40V Battery Adapter for DeWalt 20V & Milwaukee 18V
Greenworks 40V Battery Adapter – GRW40DW20 & GRW40MIL18
Get more out of your Greenworks 40V lithium-ion batteries by using them with your DeWalt 20V or Milwaukee 18V cordless power tools. The Alasicka GRW40DW20 / GRW40MIL18 Battery Adapter is a simple, plug-and-play connector that lets you cross-use your high-capacity Greenworks 40V G-MAX batteries across two of the most popular cordless tool platforms — no extra batteries needed.
Two Adapters, Two Platforms
- GRW40DW20 — Converts Greenworks 40V Li-ion batteries for use with DeWalt 20V MAX cordless power tools.
- GRW40MIL18 — Converts Greenworks 40V Li-ion batteries for use with Milwaukee M18 18V cordless power tools.
Key Features
- Wide Greenworks Battery Compatibility: Works with Greenworks 40V G-MAX batteries including models 29472, 29462, 29252, 20202, 22262, 25312, 25322, 20642, 22272, 27062, and more.
- Broad Tool Compatibility: Use your existing Greenworks 40V battery with DeWalt 20V or Milwaukee 18V cordless drills, impact drivers, brushless tools, chainsaws, worklights, blowers, and other outdoor/indoor cordless tools.
- Built-in PCB Protection: Includes a PCB circuit board for stable, protected power delivery.
- CE Certified: Meets CE certification standards for your peace of mind.
- Maximize Battery Value: Fully utilize your existing high-capacity 40V batteries for longer, more convenient cordless tool sessions — indoors or outdoors.
Important Usage Note
⚠️ This adapter is not designed for charging power tool batteries. It will not fit into any charger ports. Always remove the adapter before charging your Greenworks battery.
Package Contents
- 1 × Battery Adapter (GRW40DW20 or GRW40MIL18 — as selected)
- Battery and tools NOT included.
Specifications
| Brand | Alasicka |
| Model Numbers | GRW40DW20, GRW40MIL18 |
| Voltage Range | Low voltage (below 75V DC / below 50V AC) |
| PCB Included | Yes |
| Certification | CE |
| Battery Included | No |
| Country of Origin | Made in Mainland China |
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Frequently Asked Questions
Q: Which Greenworks 40V batteries are compatible with these adapters?
A: The GRW40DW20 and GRW40MIL18 adapters are compatible with Greenworks 40V G-MAX lithium-ion batteries, including models 29472, 29462, 29252, 20202, 22262, 25312, 25322, 20642, 22272, 27062, and many others in the 40V G-MAX range.
Q: Can I use these adapters to charge my DeWalt or Milwaukee batteries through the Greenworks charger?
A: No. These adapters are designed solely for powering cordless tools — they cannot be used for charging any battery. Always remove the adapter from the Greenworks battery before placing it in a charger.
Q: What types of cordless tools can I use with these adapters?
A: The GRW40DW20 adapter lets your Greenworks 40V battery power DeWalt 20V MAX cordless tools such as drills, impact drivers, and saws. The GRW40MIL18 adapter enables compatibility with Milwaukee M18 18V tools including drills, impact drivers, brushless tools, chainsaws, blowers, and worklights.
Q: Does the adapter include a battery or charger?
A: No. The package includes only the adapter unit. Batteries, chargers, and cordless tools are sold separately.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.