Source of Power for Torches or Phones, for Example

Puzzle 15 of No Refrigeration Needed Pack

Question is: Source of Power for Torches or Phones, for Example

and the answer is: BATTERY

Word Meaning:

BATTERY — (electricity, electronics, countable) A device used to power electric devices, consisting of one or more electrically connected electrochemical cells or (archaically) electrostatic cells.

Definitions from Wiktionary.

Source of power for torches or phones, for example No Refrigeration Needed Answers | CodyCross Solutions