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Is it possible to start a fire using just a battery and steel wool?

May 8, 2026

Quick Answer

Yes, it's possible to start a fire using a battery and steel wool, and it's a reliable method in a survival situation.

Using a Battery and Steel Wool to Start a Fire

This method works by generating a high voltage from the battery, which is then used to ignite the steel wool. The steel wool is made of fine iron fibers that can be easily ignited when exposed to a high voltage. To start, touch both terminals of the battery to both ends of a small piece of steel wool. The goal is to generate a spark, which will ignite the steel wool.

Choosing the Right Battery

A 9-volt battery is the most commonly used battery for this method, but a lithium-ion battery (such as a 18650 or 18350) can also work. The key is to have a battery with a high voltage output, as this will increase the chances of igniting the steel wool. It’s also essential to have steel wool with a high iron content, as this will be easier to ignite.

Tips for Success

To increase the chances of success, make sure the steel wool is clean and dry. Also, use a small piece of steel wool, about the size of a coin, as this will be easier to ignite. It’s also helpful to use a small piece of cardboard or a fireboard to catch the sparks and help them ignite the steel wool.

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