SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/ham-carbon-zinc-not-rechargeable

Which battery chemistry is NOT rechargeable?

Carbon-zinc, the cheap single-use type.

  1. Nickel-cadmium
  2. Lithium-ion
  3. Carbon-zinc ✔

Why: Carbon-zinc cells are meant to be used once and thrown away. Nickel-cadmium, lead-acid and lithium-ion batteries can all be recharged.

Huh, didn't know that: Rapidly charging or discharging an unprotected battery can cause overheating or out-gassing.

The dad joke
Why did the carbon-zinc battery skip the gym? It knew it couldn't recharge after.
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Sources

  1. NCVEC 2026-2030 Technician Question Pool (Feb 19, 2026 release) https://www.ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf

Test yourself in the game

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That's stuff everyone should know.