Question
Which of the following battery chemistries is rechargeable?
Answer Options
- A) Carbon-zinc
- B) Lithium-ion
- C) Alkaline
- D) All these choices are correct
Correct Answer: B
Explanation
Batteries designed to be recharged are known as secondary cells, as their chemical reaction can be safely reversed by applying an external charging current. Lithium-ion is a modern, high-energy-density rechargeable battery chemistry commonly used in handheld radios, portable power banks, and modern devices.
In contrast, carbon-zinc and standard alkaline batteries are non-rechargeable (primary cells). Knowing the chemistry is vital, as attempting to charge a non-rechargeable battery can cause it to leak, overheat, or explode.
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