If you’re a DIY enthusiast or professional tradesperson with a mix of Milwaukee and DeWalt power tools, you know the frustration of incompatible battery systems. Investing in separate batteries and chargers for each brand is costly and cumbersome—until now. A Milwaukee to Dewalt battery adapter bridges the gap between these two industry-leading brands, letting you share lithium-ion batteries across your tool collection and streamline your workflow.
In this guide, we’ll break down the top 18V and 20V Milwaukee to Dewalt battery adapters (including step-by-step installation, specs, and compatibility), plus a roundup of other reliable options to fit every tool setup. Whether you’re powering DeWalt 20V MAX tools with Milwaukee M18 batteries or vice versa, this guide has you covered.
Key Benefits of a Milwaukee to Dewalt Battery Adapter
Before diving into specific models, let’s highlight why these adapters are a game-changer for tool users:
- Cost Savings: Avoid buying duplicate batteries/chargers for Milwaukee and DeWalt tools.
- Portability: Cut down on job site gear by carrying one set of batteries for all your tools.
- Durability: Premium models use high-grade ABS, heat-resistant materials, and secure locking mechanisms for tough work environments.
- Safety: Built-in protection against overheating, loosening, and short-circuiting (no risk to your batteries or tools).
- Universal Use: Works for indoor DIY projects and outdoor professional jobs alike.
Milwaukee to DeWalt 18V Battery Adapter (MAKBOS MIL18DL)
The MAKBOS MIL18DL is the gold standard for converting Milwaukee M18 18V lithium batteries to power DeWalt 18V/20V MAX tools. With a 4.5/5 star rating from 340+ reviews, it’s a fan favorite for its solid build, perfect fit, and reliable performance.
Core Specifications
| Feature | Details |
|---|---|
| Brand | MAKBOS |
| Material | High-quality ABS (heat-resistant, anti-slip) |
| Battery Type | Lithium Ion |
| Package Dimensions | 4.72 x 3.43 x 2.83 inches |
| Item Weight | 4.2 ounces |
| Connectivity | USB |
| Color | Black |
| Warranty | 30-day return/exchange, 180-day manufacturer warranty |
| What’s Included | 1 x MIL18DL Adapter (no batteries/tools included) |
Full Compatibility List
This adapter creates a seamless connection between Milwaukee M18 18V batteries and DeWalt 18V/20V MAX XR DCB series tools—no other adapters or modifications needed.
Compatible Milwaukee M18 18V Batteries
48-11-1828, 48-11-1815, 48-11-1840, 48-11-1850, 48-11-1860, 48-11-1890 (all M18 18V lithium-ion models)
Compatible DeWalt 18V/20V MAX Tools
All DeWalt XR DCB series tools matching battery models: DCB200, DCB201, DCB203, DCB204, DCB205, DCB206 (18V/20V MAX lithium-ion)
Step-by-Step Installation Guide
The MAKBOS MIL18DL features a tool-free, plug-and-play design—installation takes 10 seconds or less. Follow these steps for safe, secure use:
- Align the Adapter: Slide the bottom of the adapter onto your Milwaukee M18 18V battery until you hear a click (the latch locks the battery in place).
- Attach to DeWalt Tool: Insert the top of the adapter (DeWalt-compatible end) into your DeWalt 18V/20V tool’s battery slot—push firmly until it locks.
- Test the Connection: Turn on the tool to confirm power flow. The adapter’s tight fit prevents loosening or slipping during use.
- For Charging: Remove the adapter first—this product is for tool use only, not charging. Charge Milwaukee/DeWalt batteries with their original chargers.
Milwaukee to DeWalt 20V Battery Adapter (NovaQuantic High Compatibility Version)
The NovaQuantic 20V Adapter flips the compatibility: it lets you power Milwaukee M18 tools with DeWalt 20V MAX lithium batteries (the reverse of the MAKBOS model). Boasting a 4.6/5 star rating, it’s engineered for professional use with precision molding and high-temp components.
Core Specifications
| Feature | Details |
|---|---|
| Brand | NovaQuantic |
| Material | Premium ABS + 14AWG high-temp cables + advanced PCB + copper |
| Connector Type | 2-Pin |
| Input Voltage | 20 Volts (DC) |
| Amperage | 20 Amps |
| Wattage | 40 Watts |
| Special Feature | Plug-and-play, 5 dedicated slots for seamless connections |
| What’s Included | 1 x Adapter (no batteries/tools included) |
| Price | $17.99 (free import charges, $5.48 shipping to China) |
Full Compatibility List
This adapter is exclusively for Milwaukee M18 system tools and DeWalt 20V MAX Slider Lithium batteries—note the critical exclusions below.
Compatible Tools/Batteries
- All Milwaukee M18 tools (cordless drills, saws, impact drivers, etc.)
- All DeWalt 20V MAX lithium batteries (including FlexVolt 20V/60V models)
Step-by-Step Installation Guide
The NovaQuantic adapter features a high-precision latch mechanism for perfect alignment—installation is intuitive and secure:
- Connect to DeWalt Battery: Align the adapter’s DeWalt-compatible end with your 20V MAX battery and push until locked (the 2-pin connector ensures a tight electrical connection).
- Attach to Milwaukee M18 Tool: Insert the adapter’s Milwaukee end into your M18 tool’s battery slot— the 5 dedicated slots guarantee a seamless fit.
- Verify Power: Turn on the tool to confirm operation. The 14AWG high-temp cables prevent overheating even during heavy use.
- Disassemble: Press the release latch on the tool/battery to remove the adapter—no tools required.
