Spark Tester

Test encased storage batteries for air-tightness.
picture of Spark Tester

Quick Stats


Salary Range
$20,000 – $56,000

Data from U.S. Department of Labor


What do Spark Testers do?

Tests encased storage batteries for air-tightness, using electric spark tester: Places frame of tester over battery container and presses plug terminal of testing apparatus to posts of battery. Moves frame of tester over surface of container to detect leaks indicated by bright sparks emitted at contact points. Examines assemblies for defects, such as uneven sealing, misplaced intercell connectors, and covers. Attaches slip to rejected batteries indicating type of defect. May stamp polarity symbols on posts, using hammer and dies.


Should I be a Spark Tester?

You should have a high school degree or higher and share these traits:
  • Detail Oriented: You pay close attention to all the little details.
  • Trustworthy: You are known for your personal integrity and honesty.
  • Independent: You enjoy flying solo and doing things your own way.

  • Also known as: Spark Plug Tester, Spindle Tester

    How to become a Spark Tester

    Most Spark Testers have no higher education and get on-the-job training. Think about earning a Certificate or Associate's degree to increase your competitiveness in the field. Chart?chd=s:9zcaaa&chl=no+college+%2869%25%29|certificate+%2828%25%29|associate%27s+%283%25%29|||&cht=p3&chs=466x180&chxr=0,69,69
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