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SESK: Stuff Everyone Should Know · sesk.info/ham-battery-short-hazard

What hazard can come from shorting an unprotected 12-volt battery?

A short can cause burns, fire, or an explosion.

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  1. Burns, fire, or an explosion ✔
  2. Shock from touching both terminals
  3. Poison gas from nearby RF

Why: A storage battery can deliver extremely high current through a short circuit. The rapid heating can burn, ignite material, or make the battery fail violently.

Huh, didn't know that: Low voltage does not mean low short-circuit current.

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The battery studied safety because it wanted a positive future.
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References

Answer: Burns, fire, or an explosion. A storage battery can deliver extremely high current through a short circuit. The rapid heating can burn, ignite material, or make the battery fail violently.

  1. NCVEC 2026-2030 Technician Question Pool www.ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf
    Shorting the terminals can cause burns, fire, or an explosion
    Checked 2026-10-09.

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