Ridgid AEG 18V to 12V Battery Adapter – AR18AR12

AR18AR12 Battery Adapter – Use Your Ridgid 18V Li-Ion Battery on 12V Cordless Tools

Maximize the value of your existing Ridgid 18V lithium-ion batteries by powering your Ridgid 12V cordless tools — no new batteries required. The AR18AR12 adapter is a smart, cost-effective solution that bridges the gap between your 18V power source and 12V tool platform, giving you extended run-time and greater versatility on the job site or in the workshop.

Key Features

• Wide 18V Battery Compatibility: Works with Ridgid / AEG 18V lithium-ion battery models including R840087, R840083, R840086, R840085, R840084, and more.
• Broad 12V Tool Compatibility: Replaces Ridgid 12V batteries AC82049, AC82059, AC82008, 130188001, and fits 12V tools including Jobmax, R82005, R82007, R82009, R82048, R82049, R82059, R82230, R8223400, R8224K, R9000K, and R86048.
• Extended Run-Time: Enjoy the higher capacity of your 18V Li-Ion batteries while running your existing 12V tool lineup — saving you money and reducing the need for extra battery purchases.
• Durable ABS Construction: Built from high-quality ABS material that is heat-resistant, wear-resistant, and drop-resistant. The solid, non-slip design ensures a secure connection every time.
• Lightweight & Portable: Compact form factor makes it easy to carry and swap tools quickly in any work environment.
• Model Number: AR18AR12 — direct replacement for Ridgid AC82049 and AC82059.

Important Notes

• This adapter is not designed for charging. If you need to charge your battery, remove the adapter first before placing it on a charger.
• Please allow 1–2 mm tolerance due to manual measurement.
• Colors may appear slightly different depending on your screen settings and lighting conditions.
• Battery is not included — adapter only.

What's in the Box

• 1 × AR18AR12 Battery Adapter

Made in Mainland China.

For general power tool safety guidelines, refer to the U.S. Consumer Product Safety Commission – Power Tools Safety.

Frequently Asked Questions

Q: Which Ridgid 18V batteries are compatible with the AR18AR12 adapter?

A: The AR18AR12 adapter is compatible with Ridgid / AEG 18V lithium-ion batteries including model numbers R840087, R840083, R840086, R840085, and R840084, among others. Always verify your specific battery model before use.

Q: Which Ridgid 12V tools and batteries does this adapter replace?

A: This adapter replaces Ridgid 12V battery models AC82049, AC82059, AC82008, and 130188001. It is compatible with 12V tools including the Jobmax series and models R82005, R82007, R82009, R82048, R82049, R82059, R82230, R8223400, R8224K, R9000K, and R86048.

Q: Can I charge my battery while the AR18AR12 adapter is attached?

A: No. This adapter is not designed for charging. You must remove the adapter from the battery before placing the battery in a charger. Attempting to charge with the adapter attached may cause damage.

Q: Will this adapter work with other brands of 18V batteries?

A: The AR18AR12 is specifically designed for Ridgid and AEG 18V lithium-ion batteries. Compatibility with other brands is not guaranteed, and using non-compatible batteries is not recommended.