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How is battery operating time calculated?

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  1. Average current divided by capacity in amp-hours
  2. Capacity in amp-hours divided by average current
  3. Average current divided by internal resistance

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References

  1. NCVEC 2024-2028 Amateur Extra Question Pool, E7D09 (4th errata, Feb. 4, 2026) www.ncvec.org/downloads/2024-2028%20Extra%20Class%20Question%20Pool%20and%20Syllabus%20Public%20Release%20with%204th%20Errata%20Feb%204%202026.pdf Checked 2026-10-11.
  2. NCVEC 2024-2028 Amateur Extra Question Pool, E7D10 (4th errata, Feb. 4, 2026) www.ncvec.org/downloads/2024-2028%20Extra%20Class%20Question%20Pool%20and%20Syllabus%20Public%20Release%20with%204th%20Errata%20Feb%204%202026.pdf Checked 2026-10-11.

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