solar array vs solar battery

solar array and solar battery both are nouns.

Word	Noun	Adjective	Verb	Adverb
solar array	Yes	No	No	No
solar battery	Yes	No	No	No

As nouns, solar array and solar battery are synonyms defined as:

solar array and solar battery: electrical device consisting of a large array of connected solar cells

Other synonyms of solar array include solar panel.

solar array (noun)	solar battery (noun)
electrical device consisting of a large array of connected solar cells	electrical device consisting of a large array of connected solar cells