Induction Heating Tools

Extinguish the Flame

Step-By-Step Guide to Seized Bolt Removal with the Battery Powered Mini-Ductor

Friday January 7, 2022

Download the Step-By-Step Guide Here

MD500 Step By Step Blog ImageMobile mechanics and technicians don’t always have access to an outlet when repairs are needed. That’s why releasing rusted components quickly, with a portable tool can make a huge difference in the field! Luckily, Induction Innovations manufactures powerful induction heating tools such as the Battery-Powered Mini-Ductor 12 Volt, specifically for seized lug nut removal in the field or roadside repair. 

The Mini-Ductor 12 Volt can be used for several applications where rusted, corroded, or thread-locked parts need to be removed quickly and safely when you’re not near an outlet.

About the Mini-Ductor 12 Volt

The Mini-Ductor 12V (MD-500) is our completely portable, battery-powered induction heating unit. This unit runs off a 12-volt battery pack, whether that be from a car, van, or truck battery. The kit features 12V battery clamps and a 9’ cord, which provides extra length for quick and easy mobile repair.

Similar to other Mini-Ductor Models, the MD-500 features a bright white LED lamp that illuminates your work surface and coil-securing thumbscrews. It features a durable reinforced thermal plastic housing and a slip-resistant grenade-style grip. In addition to that, it includes discharge battery protection, thermal overload protection, reverse polarity protection, and over-voltage protection.

The MD-500’s output is up to 840 watts with a fully charged (or new) 12V battery. The kit includes an operating manual, a custom rugged carrying case, and three coils:

*Note the bearing buddy coil does not work with the MD-500

Step-By-Step Guide to Seized Lug Nut Removal with the Battery-Powered Mini-Ductor

  • Step One — Open the hood and attach the 12 Volt clamps to a vehicle battery or 12v battery pack.

MD-500 hooked up to battery

  • Step Two — Remove the wheel cover to gain access to the lug nuts.

removing wheel cover to get to lug nuts

  • Step Three — Find the correct sized induction heating coil by holding it up to the lug nut you want to remove. Make sure to leave a small gap between the nut and the coil. If your coil is up tight against the lug nut, you can potentially burn up your coils quickly and possibly short out your unit.

choosing the right coil

  • Step Four — Lock your induction heating coil into the Mini-Ductor 12V by inserting the coil ends into the unit and turning the thumbscrews simultaneously.

locking in coils with thumbscrews

  • Step Five — Heat the lug nuts in cycles of 10-15 seconds.

Heating lug nuts

  • Step Six — Try to loosen the lug nut and see if it will come off. If not, keep repeating the 10-15 second cycle until you can get it loose.

loosening lug nuts

  • Remove the lug nut!

Lug nut removed

Contact Us:

Reach out to us via phone at 877-688-9633 or email at

Follow us on social media: Facebook • Instagram • LinkedInTikTokYouTube

Click Here to Find a Mini-Ductor Dealer Near You

Join Our Mailing List

Hello. Thank you for your interest in the Inductor® line of products. This email list will keep you up to date with new product releases along with tips on product use. We do not solicit product or share your information from joining this list.