Difficulty: Easy
Correct Answer: Alessandro Volta
Explanation:
Given data
Concept / Approach
 The first true battery was the voltaic pile, demonstrated by Alessandro Volta in 1800. It produced steady direct current from stacked pairs of dissimilar metals separated by electrolyte-soaked material. 
Why others are incorrect
 Luigi Galvani observed animal electricity; Faraday later explained electromagnetic induction; Ampère developed electrodynamics—none invented the first battery. 
Common pitfalls
 Confusing Galvani's bioelectric experiments with Volta's engineered chemical cell. 
Final Answer
 Alessandro Volta. 
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