Ryobi 18V Battery Adapter for Makita, Dewalt & Milwaukee Tools

Looking to power your 12V devices using your existing Ryobi 18V batteries? This Ryobi 18V Battery Adapter Converter is the missing link—designed to seamlessly integrate with your Volt Dropper system to safely step down 18V to 12V for a wide range of vehicle or trailer-based applications.

Ideal Pairing with Our Volt Dropper

When combined with our Volt Dropper, this adapter allows you to convert Ryobi 18V lithium-ion batteries into a stable 12V power source—perfect for powering 12V lights, chargers, USB accessories, and more in your ute, trailer, or portable power setup.

Key Features:

18V to 12V Compatibility – Designed to fit perfectly with our Volt Dropper, this adapter enables you to power 12V accessories using Ryobi 18V batteries—great for mobile workstations, tool trailers, or camping setups.

Flexible Output Configurations – Use the adapter with your Volt Dropper to connect to 12V Anderson plugs, cigarette sockets, USB chargers, and other 12V accessories (output functionality provided by Volt Dropper, not the adapter).

Tool-Free Snap-On Design – Quick and easy to use—just clip your Ryobi battery into the adapter, connect it to the Volt Dropper, and power your 12V gear.

Safe & Reliable – Built-in circuitry protects against overcurrent, short circuit, and over-discharge. Adapter is made from high-durability ABS+PC plastic for rugged use.

Compatible Ryobi Batteries (Bottom Interface):

P102, P103, P104, P105, P107, P108, P109, P122, P190, PBP004, PBP005, PBP007, and more.

Note: This adapter does not regulate voltage by itself. It must be used with a step-down device like our Volt Dropper to safely run 12V appliances.

Package Includes:

1 × Ryobi 18V Battery Adapter (Batteries and Volt Dropper sold separately)

Important Notes:

Adapter does not charge the battery. Always use your Ryobi charger.

Must be used with a step-down converter (like the Volt Dropper) when powering 12V devices.

****Battery and Volt Dropper not included.

Product Type - Battery Adapter Converter

Input Compatibility - Ryobi 18V Lithium & Ni-Mh Batteries (P102, P103, P104, P105, P107, P108, P109, P122, P190, PBP004, PBP005, PBP007, etc.)

Output Compatibility

• RYB18MT – for Makita 18V Tools (BL1815, BL1830B, BL1850B, BL1860, etc.)
• RYB20DW – for Dewalt 18V/20V Tools (DCB182, DCB184, DCB203, DCB205, etc.)
• RYB18MIL – for Milwaukee 18V Tools (48-11-1820, 48-11-1850, 48-11-1890, etc.)

Voltage Output - Matches battery voltage (18V); requires external Volt Dropper for 12V conversion

Materials - High-Durability ABS + PC Plastic

Safety Features - Over-current, Over-discharge, Short-circuit Protection.

Charging Support - Not for charging – use original Ryobi charger.

Use Case - Powering 12V devices via external step-down converter (e.g., Volt Dropper)

Included in Package - 1 × Battery Adapter (variant selected); batteries and Volt Dropper not included.

Q: Will this adapter charge my Ryobi battery?

A: No, this adapter does not support charging. Please use the original Ryobi charger to charge your batteries.

Q: Can I use this adapter without the Volt Dropper?

A: The adapter itself only converts battery terminals. To safely power 12V devices, you must use a step-down converter like the Volt Dropper.

Q: Is the adapter compatible with all Ryobi 18V batteries?

A: It is compatible with most Ryobi 18V Lithium-ion and Ni-Mh batteries, including models P102, P103, P104, P105, P107, P108, P109, P122, P190, and more.

Q: Will this adapter fit all Makita, Dewalt, or Milwaukee tools?

A: It fits most 18V (and Dewalt 20V MAX) tools from these brands but please verify your specific battery model compatibility listed in the product description.

Q: Can I use this adapter for outdoor or heavy-duty applications?

A: Yes, the adapter is made from durable ABS+PC materials and includes safety protections, making it suitable for rugged use.

Q: What if my battery or tool isn’t listed?

A: Please contact us with your specific model numbers to confirm compatibility before purchasing.