Dewalt 18V/20V & Milwaukee M18 Battery Adapter – Dual USB
Dewalt 18V/20V & Milwaukee M18 Battery Adapter – Dual USB
Power Your Devices On the Job Site — Dual USB Fast-Charging Battery Adapter
Turn your existing Dewalt 18V/20V or Milwaukee M18 lithium-ion battery into a portable fast-charging power station. This upgraded battery adapter features dual USB ports with support for Qualcomm QC2.0 & QC3.0, so you can keep your phone, tablet, or other devices charged while you work — no extra power bank required.
Made in Mainland China.
Key Features
- Universal Compatibility: Designed to fit Dewalt 18V/20V and Milwaukee M18 lithium-ion battery platforms — works with the tool batteries you already own.
- Dual USB Fast Charging: Two USB ports deliver up to 18W maximum output (5V/3.4A, 9V/2A, 12V/1.5A), automatically adjusting to the optimal fast-charging protocol for your device.
- Wide Protocol Support: Compatible with BC1.2, Apple, Samsung AFC, Huawei FCP, Qualcomm QC2.0 & QC3.0 fast-charging standards.
- Over-Discharge Protection: Built-in low-voltage protection circuit (PCB included) kicks in at approximately 15V to safeguard your battery from deep discharge.
- CE Certified: Meets CE electrical safety standards for added confidence.
- Compact & Convenient: Lightweight adapter with no extra cables needed — simply snap your battery in and plug in your USB device.
- Battery & Charger Not Included: Works with your existing Dewalt or Milwaukee M18 batteries.
Technical Specifications
| Compatible Batteries | Dewalt 18V / 20V, Milwaukee M18 Lithium-Ion |
| USB Output Voltage | 5V – 12V (auto-adjusted) |
| Max Output Power | 18W |
| Output Ports | Dual USB |
| Fast Charging Protocols | QC2.0, QC3.0, BC1.2, Apple, Samsung AFC, Huawei FCP |
| Over-Discharge Protection Voltage | ~15V |
| PCB Included | Yes |
| Certification | CE |
| Battery Included | No |
| Charger Included | No |
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: Which battery brands and voltages is this adapter compatible with?
A: This battery adapter is specifically designed for Dewalt 18V and 20V lithium-ion batteries and Milwaukee M18 lithium-ion batteries. It is not compatible with other brands or voltage platforms. Batteries are not included.
Q: How fast will this adapter charge my smartphone?
A: The adapter supports multiple fast-charging protocols including Qualcomm QC2.0 & QC3.0, Samsung AFC, Huawei FCP, Apple, and BC1.2. It automatically detects your device and adjusts the output — up to a maximum of 18W — so most modern smartphones will charge significantly faster than with a standard 5W charger.
Q: Does this adapter protect my battery from over-discharge?
A: Yes. The built-in PCB circuit monitors voltage and activates low-voltage (over-discharge) protection at approximately 15V, helping to preserve the lifespan and health of your Dewalt or Milwaukee battery.
Q: Can I charge two devices at the same time?
A: Yes — the adapter features two USB ports so you can charge two devices simultaneously. The total output is shared between both ports, with a combined maximum of 18W.
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.